Buildbot failure in Wildebeest Builder on whole buildset

[Mark Wielaard]

On Wed, 2020-03-25 at 23:48 +0000, buildbot@builder.wildebeest.org
wrote:
> The Buildbot has detected a failed build on builder whole buildset
> while building elfutils.
> Full details are available at:
>     https://builder.wildebeest.org/buildbot/#builders/2/builds/495
> 
> Buildbot URL: https://builder.wildebeest.org/buildbot/
> 
> Worker for this Build: debian-amd64

Well, this is odd. This is:

FAIL: run-backtrace-native-core-biarch.sh
=========================================

0xf7f6c000	0xf7f6e000	linux-gate.so.1
0xf7f6e000	0xf7f97948	ld-linux.so.2
0xf7d56000	0xf7f33780	libc.so.6
0xf7f34000	0xf7f542b8	libpthread.so.0
0x565a4000	0x565a8054	backtrace-child-biarch
TID 5133:
# 0 0xf7f6d069    	__kernel_vsyscall
# 1 0xf7f469b2 - 1	raise
# 2 0x565a548a - 1	sigusr2
# 3 0x565a5564 - 1	stdarg
# 4 0x565a557a - 1	backtracegen
# 5 0x565a5588 - 1	start
# 6 0xf7f3afd2 - 1	start_thread
# 7 0xf7e506d6 - 1	__clone
TID 5132:
# 0 0xf7e506c4    	__clone
/srv/buildbot/worker/elfutils-debian-amd64/build/tests/backtrace:
dwfl_thread_getframes: no matching address range
backtrace: backtrace.c:81: callback_verify: Assertion `seen_main'
failed.
./test-subr.sh: line 84:  5136
Aborted                 LD_LIBRARY_PATH="${built_library_path}${LD_LIBR
ARY_PATH:+:}$LD_LIBRARY_PATH" $VALGRIND_CMD "$@"
backtrace-child-biarch-core.5132: no main
rmdir: failed to remove 'test-5124': Directory not empty
FAIL run-backtrace-native-core-biarch.sh (exit status: 1)

But I cannot replicate it. And it was caused by a change to the README
file. Rebuilding on the same buildbot worker also made it PASS... Sigh.

Don't know what to do about it, except watch whether it happens again
or not.

Cheers,

Mark