this derivation will be built:
  /nix/store/md0avhpi1ykw0c6s8ra8x31rf6x55ma7-pg-upgrade-start-guard-test.drv
building '/nix/store/md0avhpi1ykw0c6s8ra8x31rf6x55ma7-pg-upgrade-start-guard-test.drv'
pg-upgrade-start-guard-test> /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.hLvUl5TXga/bin/systemctl: /usr/bin/env: bad interpreter: No such file or directory
pg-upgrade-start-guard-test> /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.hLvUl5TXga/bin/rm: /usr/bin/env: bad interpreter: No such file or directory
error: Cannot build '/nix/store/md0avhpi1ykw0c6s8ra8x31rf6x55ma7-pg-upgrade-start-guard-test.drv'.
       Reason: builder failed with exit code 126.
       Output paths:
         /nix/store/bks9rd0jja7dmv5k9jgxfw8kzszb60i7-pg-upgrade-start-guard-test
       Last 2 log lines:
       > /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.hLvUl5TXga/bin/systemctl: /usr/bin/env: bad interpreter: No such file or directory
       > /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.hLvUl5TXga/bin/rm: /usr/bin/env: bad interpreter: No such file or directory
       For full logs, run:
         nix log /nix/store/md0avhpi1ykw0c6s8ra8x31rf6x55ma7-pg-upgrade-start-guard-test.drv