[staging] dejagnu tests fail

[worldofpeace]

Issue description

See build output

make[1]: Entering directory '/build/dejagnu-1.6.2'
Making a new site.exp file ...
srcdir='.'; export srcdir; \
EXPECT=/nix/store/ypcwqyq0iphazjrykjjhfqxydiln7v7m-expect-5.45.4/bin/expect; export EXPECT; \
if /nix/store/71lkz2czb9qfn3l2v9sdc0ph0b67hpk9-bash-4.4-p23/bin/bash -c "./runtest --version" > /dev/null 2>&1; then \
  exit_status=0; l='libdejagnu runtest'; for tool in $l; do \
    if ./runtest  --tool ${tool} --srcdir ${srcdir}/testsuite RUNTEST=./runtest ; \
    then :; else exit_status=1; fi; \
  done; \
else echo "WARNING: could not find './runtest'" 1>&2; :;\
fi; \
exit $exit_status
Using ./testsuite/lib/libdejagnu.exp as tool init file.
Native configuration is x86_64-pc-linux-gnu

                === libdejagnu tests ===

Schedule of variations:
    unix

Running target unix
Using ./config/unix.exp as generic interface file for target.
Using ./testsuite/../config/unix.exp as tool-and-target-specific interface file.
Running ./testsuite/libdejagnu/tunit.exp ...

                === libdejagnu Summary ===

# of expected passes            5
/nix/store/71lkz2czb9qfn3l2v9sdc0ph0b67hpk9-bash-4.4-p23/bin/bash: line 3:  1163 Aborted                 ./runtest --tool ${tool} --srcdir ${srcdir}/testsuite RUNTEST=./runtest
Using ./testsuite/lib/runtest.exp as tool init file.
Native configuration is x86_64-pc-linux-gnu

                === runtest tests ===

Schedule of variations:
    unix

Running target unix
Using ./config/unix.exp as generic interface file for target.
Using ./testsuite/../config/unix.exp as tool-and-target-specific interface file.
Running ./testsuite/runtest.all/libs.exp ...
Running ./testsuite/runtest.all/load_lib.exp ...
Running ./testsuite/runtest.all/options.exp ...
Running ./testsuite/runtest.all/stats-sub.exp ...
Running ./testsuite/runtest.all/stats.exp ...

                === runtest Summary ===

# of expected passes            77
DejaGnu version 1.6.2
Expect version  5.45.4
Tcl version     8.6

/nix/store/71lkz2czb9qfn3l2v9sdc0ph0b67hpk9-bash-4.4-p23/bin/bash: line 3:  1210 Aborted                 ./runtest --tool ${tool} --srcdir ${srcdir}/testsuite RUNTEST=./runtest
make[1]: *** [Makefile:998: check-DEJAGNU] Error 1
make[1]: Leaving directory '/build/dejagnu-1.6.2'
make: *** [Makefile:1203: check-am] Error 2

[pbogdan]

See #36948 & #54526

[worldofpeace]

#36948 was reverted 319ebef

So that should at least resolve this for now.