Bug#921657: xvfb-run: -e /dev/stderr does not work

[Simon McVittie <smcv@debian.org>]

On Thu, 07 Feb 2019 at 17:59:42 +0000, Thorsten Glaser wrote:
> + xvfb-run -a -e /dev/stderr -s '-screen 0 1024x768x24 -fbdir /var/tmp' -- ctest -O ctest.log -j8 --output-on-failure
> /usr/bin/xvfb-run: 159: /usr/bin/xvfb-run: cannot create /dev/stderr: Permission denied
> /usr/bin/xvfb-run: 82: /usr/bin/xvfb-run: cannot create /dev/stderr: Permission denied
> + rv=2

Was this in a pbuilder and/or cowbuilder environment?

I believe this could be the same issue as
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1087418 for which I have
proposed
<https://salsa.debian.org/xorg-team/xserver/xorg-server/-/merge_requests/14>.
If you can still reproduce this problem, please could you try that MR?

Thanks,
    smcv