download_progress.cc:49:11: error: no match for ‘operator<<’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream’} and ‘const char =?UTF-8?Q?[17]=E2=80=99?=))

Debian Bug Tracking System Sat, 15 Aug 2020 20:36:58 -0700

Your message dated Sun, 16 Aug 2020 03:33:28 +0000
with message-id <[email protected]>
and subject line Bug#966875: fixed in aptitude 0.8.13-2
has caused the Debian Bug report #966875,
regarding aptitude: FTBFS: 
../../../../src/generic/views/download_progress.cc:49:11: error: no match for 
‘operator<<’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} 
and ‘const char [17]’)
to be marked as done.


This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)


-- 
966875: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=966875
Debian Bug Tracking System
Contact [email protected] with problems

--- Begin Message ---

Source: aptitude
Version: 0.8.13-1
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200802 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> g++ -DHAVE_CONFIG_H -I. -I../../../../src/generic/views -I../../..  
> -I../../.. -I../../../.. -I../../../../src -I../../../../intl -I/usr/include 
> -Wdate-time -D_FORTIFY_SOURCE=2 -DHELPDIR=\"/usr/share/aptitude\" 
> -DPKGDATADIR=\"/usr/share/aptitude\"  -I/usr/include/sigc++-2.0 
> -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include -I/usr/include/cwidget 
> -I/usr/lib/x86_64-linux-gnu/cwidget -I/usr/include/sigc++-2.0 
> -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include    -g -O2 
> -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat 
> -Werror=format-security  -D_REENTRANT -std=gnu++17 -Wall  -c -o 
> search_input.o ../../../../src/generic/views/search_input.cc
> ../../../../src/generic/views/download_progress.cc: In function 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’:
> ../../../../src/generic/views/download_progress.cc:49:11: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [17]’)
>    49 |       out << "(current_size = "
>       |       ~~~ ^~ ~~~~~~~~~~~~~~~~~~
>       |       |      |
>       |       |      const char [17]
>       |       std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [17]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [17]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:49:7: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    49 |       out << "(current_size = "
>       |       ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:49:14: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    49 |       out << "(current_size = "
>       |              ^~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:49:14: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [17]’
>    49 |       out << "(current_size = "
>       |              ^~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:49:14: note:   cannot 
> convert ‘"(current_size = "’ (type ‘const char [17]’) to type ‘const 
> std::error_code&’
>    49 |       out << "(current_size = "
>       |              ^~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:49:14: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [17]’
>    49 |       out << "(current_size = "
>       |              ^~~~~~~~~~~~~~~~~~
> ../../../../src/generic/views/download_progress.cc:59:13: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const long unsigned int’)
>    59 |         out << *progress.get_id();
>       |         ~~~ ^~ ~~~~~~~~~~~~~~~~~~
>       |         |      |
>       |         |      const long unsigned int
>       |         std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const long unsigned int’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const long unsigned int’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:59:9: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    59 |         out << *progress.get_id();
>       |         ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:59:33: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘long unsigned int’
>    59 |         out << *progress.get_id();
>       |                                 ^
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:59:33: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const long unsigned int’
>    59 |         out << *progress.get_id();
>       |                                 ^
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:59:16: note:   cannot 
> convert ‘(&(& 
> progress)->aptitude::views::download_progress::file_progress::get_id())->std::optional<long
>  unsigned int>::operator*()’ (type ‘const long unsigned int’) to type ‘const 
> std::error_code&’
>    59 |         out << *progress.get_id();
>       |                ^~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:59:33: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const long unsigned int’
>    59 |         out << *progress.get_id();
>       |                                 ^
> ../../../../src/generic/views/download_progress.cc:61:13: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [7]’)
>    61 |         out << "(none)";
>       |         ~~~ ^~ ~~~~~~~~
>       |         |      |
>       |         |      const char [7]
>       |         std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [7]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [7]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:61:9: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    61 |         out << "(none)";
>       |         ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:61:16: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    61 |         out << "(none)";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:61:16: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [7]’
>    61 |         out << "(none)";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:61:16: note:   cannot 
> convert ‘"(none)"’ (type ‘const char [7]’) to type ‘const std::error_code&’
>    61 |         out << "(none)";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:61:16: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [7]’
>    61 |         out << "(none)";
>       |                ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:62:11: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [10]’)
>    62 |       out << ", mode = "
>       |       ~~~ ^~ ~~~~~~~~~~~
>       |       |      |
>       |       |      const char [10]
>       |       std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [10]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [10]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:62:7: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    62 |       out << ", mode = "
>       |       ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:62:14: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    62 |       out << ", mode = "
>       |              ^~~~~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:62:14: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [10]’
>    62 |       out << ", mode = "
>       |              ^~~~~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:62:14: note:   cannot 
> convert ‘", mode = "’ (type ‘const char [10]’) to type ‘const 
> std::error_code&’
>    62 |       out << ", mode = "
>       |              ^~~~~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:62:14: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [10]’
>    62 |       out << ", mode = "
>       |              ^~~~~~~~~~~
> ../../../../src/generic/views/download_progress.cc:64:18: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [2]’)
>    64 |       return out << ")";
>       |              ~~~ ^~ ~~~
>       |              |      |
>       |              |      const char [2]
>       |              std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [2]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [2]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:64:14: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    64 |       return out << ")";
>       |              ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:64:21: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    64 |       return out << ")";
>       |                     ^~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:64:21: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [2]’
>    64 |       return out << ")";
>       |                     ^~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:64:21: note:   cannot 
> convert ‘")"’ (type ‘const char [2]’) to type ‘const std::error_code&’
>    64 |       return out << ")";
>       |                     ^~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:64:21: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [2]’
>    64 |       return out << ")";
>       |                     ^~~
> ../../../../src/generic/views/download_progress.cc: In member function ‘void 
> aptitude::views::show_worker_status::operator()(const 
> aptitude::views::download_progress::file_progress&) const’:
> ../../../../src/generic/views/download_progress.cc:87:13: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [10]’)
>    87 |         out << "progress:" << progress;
>       |         ~~~ ^~ ~~~~~~~~~~~
>       |         |      |
>       |         |      const char [10]
>       |         std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [10]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [10]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:87:9: note:   cannot 
> convert ‘((const 
> aptitude::views::show_worker_status*)this)->aptitude::views::show_worker_status::out’
>  (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type ‘std::byte’
>    87 |         out << "progress:" << progress;
>       |         ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:87:16: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    87 |         out << "progress:" << progress;
>       |                ^~~~~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:87:16: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [10]’
>    87 |         out << "progress:" << progress;
>       |                ^~~~~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:87:16: note:   cannot 
> convert ‘"progress:"’ (type ‘const char [10]’) to type ‘const 
> std::error_code&’
>    87 |         out << "progress:" << progress;
>       |                ^~~~~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:87:16: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [10]’
>    87 |         out << "progress:" << progress;
>       |                ^~~~~~~~~~~
> ../../../../src/generic/views/download_progress.cc: In member function ‘void 
> aptitude::views::show_worker_status::operator()(const string&) const’:
> ../../../../src/generic/views/download_progress.cc:92:13: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [6]’)
>    92 |         out << "msg:\"" << msg << "\"";
>       |         ~~~ ^~ ~~~~~~~~
>       |         |      |
>       |         |      const char [6]
>       |         std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [6]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> In file included from ../../../../src/generic/views/download_progress.cc:21:
> ../../../../src/generic/views/download_progress.h:270:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>   270 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.h:271:63: note:   no known 
> conversion for argument 2 from ‘const char [6]’ to ‘const 
> aptitude::views::download_progress::status&’
>   271 |                              const download_progress::status &status);
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:92:9: note:   cannot 
> convert ‘((const 
> aptitude::views::show_worker_status*)this)->aptitude::views::show_worker_status::out’
>  (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type ‘std::byte’
>    92 |         out << "msg:\"" << msg << "\"";
>       |         ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:92:16: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    92 |         out << "msg:\"" << msg << "\"";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:92:16: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [6]’
>    92 |         out << "msg:\"" << msg << "\"";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:92:16: note:   cannot 
> convert ‘"msg:\""’ (type ‘const char [6]’) to type ‘const std::error_code&’
>    92 |         out << "msg:\"" << msg << "\"";
>       |                ^~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:92:16: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [6]’
>    92 |         out << "msg:\"" << msg << "\"";
>       |                ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc: In function 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’:
> ../../../../src/generic/views/download_progress.cc:99:11: error: no match for 
> ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [18]’)
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |       ~~~ ^~ ~~~~~~~~~~~~~~~~~~~
>       |       |      |
>       |       |      const char [18]
>       |       std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [18]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:96:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>    96 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:97:63: note:   no known 
> conversion for argument 2 from ‘const char [18]’ to ‘const 
> aptitude::views::download_progress::status&’
>    97 |                              const download_progress::status &status)
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:99:7: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |       ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:99:14: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |              ^~~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:99:14: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [18]’
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |              ^~~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:99:14: note:   cannot 
> convert ‘"(download_rate = "’ (type ‘const char [18]’) to type ‘const 
> std::error_code&’
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |              ^~~~~~~~~~~~~~~~~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:99:14: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [18]’
>    99 |       out << "(download_rate = " << status.get_download_rate()
>       |              ^~~~~~~~~~~~~~~~~~~
> ../../../../src/generic/views/download_progress.cc:113:17: error: no match 
> for ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [3]’)
>   113 |             out << ", ";
>       |             ~~~ ^~ ~~~~
>       |             |      |
>       |             |      const char [3]
>       |             std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [3]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:96:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>    96 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:97:63: note:   no known 
> conversion for argument 2 from ‘const char [3]’ to ‘const 
> aptitude::views::download_progress::status&’
>    97 |                              const download_progress::status &status)
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:113:13: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>   113 |             out << ", ";
>       |             ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:113:20: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>   113 |             out << ", ";
>       |                    ^~~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:113:20: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [3]’
>   113 |             out << ", ";
>       |                    ^~~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:113:20: note:   cannot 
> convert ‘", "’ (type ‘const char [3]’) to type ‘const std::error_code&’
>   113 |             out << ", ";
>       |                    ^~~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:113:20: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [3]’
>   113 |             out << ", ";
>       |                    ^~~~
> ../../../../src/generic/views/download_progress.cc:117:18: error: no match 
> for ‘operator<<’ (operand types are ‘std::ostream’ {aka 
> ‘std::basic_ostream<char>’} and ‘const char [2]’)
>   117 |       return out << "]";
>       |              ~~~ ^~ ~~~
>       |              |      |
>       |              |      const char [2]
>       |              std::ostream {aka std::basic_ostream<char>}
> ../../../../src/generic/views/download_progress.cc:47:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::file_progress&)’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:47:89: note:   no known 
> conversion for argument 2 from ‘const char [2]’ to ‘const 
> aptitude::views::download_progress::file_progress&’
>    47 |     std::ostream &operator<<(std::ostream &out, const 
> download_progress::file_progress &progress)
>       |                                                 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:96:19: note: candidate: 
> ‘std::ostream& aptitude::views::operator<<(std::ostream&, const 
> aptitude::views::download_progress::status&)’
>    96 |     std::ostream &operator<<(std::ostream &out,
>       |                   ^~~~~~~~
> ../../../../src/generic/views/download_progress.cc:97:63: note:   no known 
> conversion for argument 2 from ‘const char [2]’ to ‘const 
> aptitude::views::download_progress::status&’
>    97 |                              const download_progress::status &status)
>       |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> In file included from /usr/include/boost/variant/variant.hpp:18,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/cstddef:125:5: note: candidate: ‘template<class 
> _IntegerType> constexpr std::__byte_op_t<_IntegerType> 
> std::operator<<(std::byte, _IntegerType)’
>   125 |     operator<<(byte __b, _IntegerType __shift) noexcept
>       |     ^~~~~~~~
> /usr/include/c++/10/cstddef:125:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:117:14: note:   cannot 
> convert ‘out’ (type ‘std::ostream’ {aka ‘std::basic_ostream<char>’}) to type 
> ‘std::byte’
>   117 |       return out << "]";
>       |              ^~~
> In file included from /usr/include/c++/10/bits/basic_string.h:48,
>                  from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/string_view:622:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, 
> std::basic_string_view<_CharT, _Traits>)’
>   622 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/string_view:622:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:117:21: note:   mismatched 
> types ‘std::basic_string_view<_CharT, _Traits>’ and ‘const char*’
>   117 |       return out << "]";
>       |                     ^~~
> In file included from /usr/include/c++/10/string:55,
>                  from /usr/include/boost/type_index/type_index_facade.hpp:14,
>                  from /usr/include/boost/type_index/stl_type_index.hpp:22,
>                  from /usr/include/boost/type_index.hpp:29,
>                  from /usr/include/boost/variant/variant.hpp:21,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/basic_string.h:6458:5: note: candidate: 
> ‘template<class _CharT, class _Traits, class _Alloc> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)’
>  6458 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/basic_string.h:6458:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:117:21: note:   mismatched 
> types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>’ and 
> ‘const char [2]’
>   117 |       return out << "]";
>       |                     ^~~
> In file included from /usr/include/c++/10/bits/ios_base.h:46,
>                  from /usr/include/c++/10/streambuf:41,
>                  from /usr/include/c++/10/bits/streambuf_iterator.h:35,
>                  from /usr/include/c++/10/iterator:66,
>                  from /usr/include/boost/variant/detail/move.hpp:23,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/system_error:262:5: note: candidate: ‘template<class 
> _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)’
>   262 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const 
> error_code& __e)
>       |     ^~~~~~~~
> /usr/include/c++/10/system_error:262:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:117:21: note:   cannot 
> convert ‘"]"’ (type ‘const char [2]’) to type ‘const std::error_code&’
>   117 |       return out << "]";
>       |                     ^~~
> In file included from /usr/include/c++/10/memory:84,
>                  from /usr/include/boost/move/algorithm.hpp:33,
>                  from /usr/include/boost/move/move.hpp:32,
>                  from /usr/include/boost/variant/detail/move.hpp:28,
>                  from /usr/include/boost/variant/detail/initializer.hpp:23,
>                  from /usr/include/boost/variant/variant.hpp:30,
>                  from /usr/include/boost/variant.hpp:17,
>                  from ../../../../src/generic/views/download_progress.h:25,
>                  from ../../../../src/generic/views/download_progress.cc:21:
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note: candidate: ‘template<class 
> _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> 
> std::basic_ostream<_CharT, _Traits>& 
> std::operator<<(std::basic_ostream<_CharT, _Traits>&, const 
> std::__shared_ptr<_Tp, _Lp>&)’
>    69 |     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
>       |     ^~~~~~~~
> /usr/include/c++/10/bits/shared_ptr.h:69:5: note:   template argument 
> deduction/substitution failed:
> ../../../../src/generic/views/download_progress.cc:117:21: note:   mismatched 
> types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘const char [2]’
>   117 |       return out << "]";
>       |                     ^~~
> make[6]: *** [Makefile:460: download_progress.o] Error 1

The full build log is available from:
   http://qa-logs.debian.net/2020/08/02/aptitude_0.8.13-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.

--- End Message ---

--- Begin Message ---

Source: aptitude
Source-Version: 0.8.13-2
Done: Axel Beckert <[email protected]>

We believe that the bug you reported is fixed in the latest version of
aptitude, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Axel Beckert <[email protected]> (supplier of updated aptitude package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Sun, 16 Aug 2020 04:32:25 +0200
Source: aptitude
Architecture: source
Version: 0.8.13-2
Distribution: unstable
Urgency: medium
Maintainer: Aptitude Development Team <[email protected]>
Changed-By: Axel Beckert <[email protected]>
Closes: 966875
Changes:
 aptitude (0.8.13-2) unstable; urgency=medium
 .
   * Drop fix-ftbfs-with-po4a-0.58.patch and build-depend on po4a versions
     not affected by #960892.
   * Add a debian/gitlab-ci.yml file.
   * Override upstream-metadata-file-is-missing lintian warning as it
     doesn't make sense to have a less informative copy (without branch
     information) of the Vcs-* headers in there again. It just causes work
     because the Lintian Janitor bot files useless merge requests.
   * Add temporary patch to fix FTBFS with GCC 10. (Closes: #966875)
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Files:
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--- End Message ---

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[Aptitude-devel] Bug#966875: marked as done (aptitude: FTBFS: ../../../../src/generic/views/download_progress.cc:49:11: error: no match for ‘operator<<’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream’} and ‘const char =?UTF-8?Q?[17]=E2=80=99?=))

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