I can confirm the same when checking on travis with r-devel.

And thanks for the tip with 

env:
  - _R_CHECK_SYSTEM_CLOCK_=0

In .travis.yml

Seems to be working now

Rainer



> On 7 Mar 2019, at 12:48, Ralf Herold <ralf.her...@mailbox.org> wrote:
> 
> Dear All, 
> 
> Checking a new package under development produces a warning in a local 
> R-devel MS Windows environment (output below). 
> 
> Building it with R-devel on Travis fails (because warnings are changed to 
> errors), but is successful when setting environment variable 
> _R_CHECK_SYSTEM_CLOCK_ to zero. 
> 
> No issue occurs when checking and building with R-stable and R-oldrel on 
> Travis, or with any R version on win-builder.r-project.org. 
> 
> The warning concerns using http://worldclockapi.com/, which however seems out 
> of service ("The web app you have attempted to reach is currently stopped and 
> does not accept any requests."). This is referenced in the main function for 
> R CMD check (https://svn.r-project.org/R/trunk/src/library/tools/R/check.R) 
> and may concern more R-devel than R-package-devel. I am posting here to check 
> if the issue was noticed by other package developers and to check the impact. 
> 
> Thanks for any suggestions. 
> Best regards,
> Ralf
> 
> 
> PS C:\Users\username> & 'C:\Program Files\R\R-devel\bin\R.exe' CMD check 
> E:\mypackage_0.1.2.3.tar.gz --as-cran
> * using log directory 'C:/Users/username/ctrdata.Rcheck'
> * using R Under development (unstable) (2019-03-05 r76200)
> * using platform: x86_64-w64-mingw32 (64-bit)
> * using session charset: ISO8859-1
> * using option '--as-cran'
> [...]
> * checking package directory ... OK
> * checking for future file timestamps ...Warning in file(con, "r") :
>  cannot open URL 'http://worldclockapi.com/api/json/utc/now': HTTP status was 
> '403 Site Disabled'
> WARNING
> unable to verify current time
> * checking 'build' directory … OK
> [...]
> 
> 
> 
> ## Ralf Herold 
> ## mailto: ralf.her...@mailbox.org [S/MIME]
> ## https://paediatricdata.eu/
> 
> ______________________________________________
> R-package-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-package-devel




--
Rainer M. Krug
email: Rainer<at>krugs<dot>de
PGP: 0x0F52F982


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