2.72 on 26.04:
root@u1:~# snap version
snap 2.72+ubuntu26.04.1
snapd 2.72+ubuntu26.04.1
series 16
ubuntu 26.04
kernel 6.17.0-6-generic
architecture amd64
root@u1:~# snap install hello
2025-12-03T12:36:04Z INFO Waiting for automatic snapd restart...
hello 2.10 from Canonical✓ installed
root@u1:~# su - ubuntu
ubuntu@u1:~$ snap run hello
Hello, world!
ubuntu@u1:~$ snap run --strace hello
warning: preserving the entire environment is not supported, `-E` is ignored
error: exit status 1
2.73 on 26.04:
ubuntu@u1:~$ snap version
snap 2.73+ubuntu26.04.1
snapd 2.73+ubuntu26.04.1
series 16
ubuntu 26.04
kernel 6.17.0-6-generic
architecture amd64
ubuntu@u1:~$ dpkg -l sudo-rs
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-===============-============-======================================
ii sudo-rs 0.2.10-1ubuntu1 amd64 Rust-based sudo and su
implementations
ubuntu@u1:~$ snap run --strace hello
/usr/bin/strace: Process 3032 attached
--- stopped by SIGSTOP ---
--- SIGCONT {si_signo=SIGCONT, si_code=SI_USER, si_pid=3023, si_uid=1000} ---
[pid 3032] execve("/snap/hello/42/snap/command-chain/snapcraft-runner",
["/snap/hello/42/snap/command-chai"..., "/snap/hello/42/bin/hello"],
0xc000158780 /* 37 vars */ <unfinished ...>
[pid 3042] <... futex resumed>) = ?
[pid 3042] +++ exited with 0 +++
[pid 3041] +++ exited with 0 +++
<... execve resumed>) = 0
brk(NULL) = 0x63b0d576a000
arch_prctl(0x3001 /* ARCH_??? */, 0x7fffff1f07f0) = -1 EINVAL (Invalid argument)
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
....
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
write(1, "Hello, world!\n", 14Hello, world!
) = 14
close(1) = 0
close(2) = 0
exit_group(0) = ?
+++ exited with 0 +++
Can confirm the workaround is applied with snapd 2.73.
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https://bugs.launchpad.net/bugs/2127766
Title:
snap run --strace doesn't work with sudo-rs [sudo -E not supported]
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