bug#29368: Unreliable failing tests / segfaulting guile

[Martin Castillo]

The test suite fails on 84bd92438. I was running [env] $ make check -j
3. (I accidentaly overwrote the log file, sorry.)
The kernel logged:
.guile-real[10735]: segfault at 7b ip 000000000057885d sp
00007ffdfb13b570 error 4 in .guile-real[400000+38a000]

The message appeared when the tests were at about
tests/guix-environment.sh (about 30 tests after tests/nar.scm, the only
failing test). But as I had given -j 3, it may be that nar.scm was still
going.

However, rerunning it without -j 3 and than again with -j 3 worked
without any failure.

That's a bit strange, so I repeated make check -j 3 and now
tests/derivations.scm failed. (test-suite-2.log)

And again, while tests/guix-environment.sh or so is running, the kernel
logs.
.guile-real[24288]: segfault at 7b ip 000000000057885d sp
00007ffef8557490 error 4 in .guile-real[400000+38a000]


Martin

test-suite-2.log
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