[...]

+ expr 15 + 128
+ eval 'trap '\''Exit 143'\'' 15'
+ trap 'Exit 143' 15
t36.sh: skipped test: very expensive: disabled by default
This test is very expensive, so it is disabled by default.
To run it anyway, rerun make check with the RUN_VERY_EXPENSIVE_TESTS
environment variable set to yes.  E.g.,
  env RUN_VERY_EXPENSIVE_TESTS=yes make check
or use the shortcut target of the toplevel Makefile,
  make check-very-expensive
============================================================================
Testsuite summary for GNU coreutils 8.23
============================================================================
# TOTAL: 558
# PASS:  421
# SKIP:  135
# XFAIL: 0
# FAIL:  2
# XPASS: 0
# ERROR: 0
============================================================================
See ./tests/test-suite.log
Please report to bug-coreutils@gnu.org
============================================================================
make[4]: *** [tests/test-suite.log] Error 1
make[4]: Leaving directory `/home/users/builder/rpm/BUILD/coreutils-8.23'
make[3]: *** [check-TESTS] Error 2
make[3]: Leaving directory `/home/users/builder/rpm/BUILD/coreutils-8.23'
make[2]: *** [check-am] Error 2
make[2]: Leaving directory `/home/users/builder/rpm/BUILD/coreutils-8.23'
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory `/home/users/builder/rpm/BUILD/coreutils-8.23'
make: *** [check] Error 2
error: Bad exit status from /tmp/B.ab81b0/rpm-tmp.11600 (%build)
RPM build errors:
    Bad exit status from /tmp/B.ab81b0/rpm-tmp.11600 (%build)
ended at: Mon Aug 17 15:13:01 2015, done in 01days 00h 10m 47s
error: No files produced.
mesg: ttyname failed: Inappropriate ioctl for device
Begin-PLD-Builder-Info
Build-Time: user:433.49s sys:371.74s real:655.54s (faults io:155 non-io:27975255)
End-PLD-Builder-Info