dhall expression fix for performance wrapper

20 jobs for master in 2 minutes and 12 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #27715
integration
argonix

00:00:05

passed #27717
integration
buildAMG

00:00:12

passed #27720
integration
buildLAMMPS

00:00:03

passed #27718
integration
buildOpenMC

00:00:03

passed #27719
integration
buildSTREAM

00:00:02

passed #27713
integration
containers

00:00:03

passed #27714
integration
dhrun

00:00:05

passed #27716
integration
excit

00:00:02

passed #27712
integration
libnrm

00:00:03

passed #27711
integration
nrm

00:00:03

 
  Test
passed #27721
integration
excit-check

00:00:28

passed #27722
integration
testHello

00:00:14

passed #27723
integration
testListen

00:01:57

failed #27724
performance integration
testPerfwrapper

00:00:31

passed #27725
knl
testPower

00:00:31

 
  Applications
skipped #27726
integration notknl
testAMG
skipped #27729
integration notknl
testLAMMPS
skipped #27728
integration notknl
testOpenMC
skipped #27727
integration notknl
testSTREAM
 
  Quality
skipped #27730
integration
repoquality
 
Name Stage Failure
failed
testPerfwrapper Test
error: build of '/nix/store/173hy3qa3hs7vph1d5zhz4d2kz75ynnn-testEnv.drv' failed
cp -Lr /tmp/tmpdir-oaHS ./nixtmpdir
chmod -R +w ./nixtmpdir
build failed.
Uploading artifacts...
WARNING: result/*: no matching files
nixtmpdir/: found 3 matching files

Uploading artifacts to coordinator... ok
id=27724 responseStatus=201 Created token=yxuusiFR
ERROR: Job failed: exit status 1