Bug#1002229: libnet-traceroute-perl: FTBFS: dh_auto_test: error: make -j4 test TEST_VERBOSE=1 returned exit code 2

[gregor herrmann]

COntrol: tag -1 + unreproducible moreinfo

On Tue, 21 Dec 2021 17:33:43 +0100, Lucas Nussbaum wrote:

> Source: libnet-traceroute-perl
> Version: 1.15-2
> Severity: serious
> Justification: FTBFS

> > /<<PKGBUILDDIR>>/blib/lib/Net/Traceroute.pm:Net::Traceroute::debug_print:230: Running in debug mode
> > /<<PKGBUILDDIR>>/blib/lib/Net/Traceroute.pm:Net::Traceroute::debug_print:294: Performing traceroute
> > /<<PKGBUILDDIR>>/blib/lib/Net/Traceroute.pm:Net::Traceroute::debug_print:487: $VAR1 = bless( {
> >                  'debug' => 9,
> >                  'stat' => 2,
> >                  'host' => 'ip-10-84-232-242',
> >                  'trace_program' => 'traceroute',
> >                  'timeout' => 30
> >                }, 'Net::Traceroute' );
> > No output from traceroute.  Exec failure? at /<<PKGBUILDDIR>>/blib/lib/Net/Traceroute.pm line 360.
> > # Looks like your test exited with 255 before it could output anything.
> > t/95-sys-traceroute.t ......... 
> > 1..2
> > Dubious, test returned 255 (wstat 65280, 0xff00)
> > Failed 2/2 subtests 


Hi Lucas,

thanks for your bug report.

Yesterday evening, 3 of us in the Perl team could not reproduce this
failure locally. From looking at the test and the actual code, what
seems to happen is that `traceroute' does not produce _any_ output,
which is a bit surprising.

Do you have any idea how this can happen in your test environment or
any information for us, what is special about it?


As a side note, the test itself is marked as TODO, i.e. expected to
fail, with a comment that it's fragile, so we might as well skip it
completely. - Oh, that comes from our own patch :) And the patch
headers mention #849933 and #980475.

Still, seeing the code explode _before_ reaching this stage is
puzzling.


Cheers,
gregor

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