In particular, clear $NIX_BUILD_HOOK to prevent tests from failing mysteriously. Also print stdout/stderr output of hydra-evaluator.
OB7GB5DLJ3NCVUELTTNPBNGIT757BIYQ452WKNOCNLY3SAI4HHAQC
PCMXCIOWPMQHP2NRKYMF67SS4D3I364SMFXNXZKVBOZGAJXD4OBAC
PVBTVPKJAJZEEKWJ5M2PI6RHYJXPJYJQ3ULDOD3PQ7YT3SVGUMXAC
JRVI4XTV4OXAVYJYJ5MQHJ5YITOUI2VAUVEL6XXO5HME54IUC5LAC
G2ZB6464XGPBIMSZIPSB24EIXSCCGV4XWC3IWPS2CXYPDSUZSU5QC
HX4QYOYAKKFKK4KF6SZ6FQCM5ZF7ZFDTQUR4GS5WPPTYZASYZZUAC
WFJ3ZPRMZ52NFPPGRJTVNLYLFFN2DYP3JHNTPVRQAEULEF7VCGGAC
OSZDLGMP6YZMF4BGAN3CB56P2BHLZP25CDERCJQ4JQQ7KE5ZML5AC
SBKX3YH2EOCYY2IDACGOTXHJZSYSRHD5EC7FB6WGPKHLFYOF6SAAC
my ($res) = captureStdoutStderr(60, ("../src/script/hydra-evaluator", $jobset->project->name, $jobset->name));
my ($res, $stdout, $stderr) = captureStdoutStderr(60, ("../src/script/hydra-evaluator", $jobset->project->name, $jobset->name));
chomp $stdout; chomp $stderr;