these 2 derivations will be built:
  /nix/store/g3psq35kn18q6adb3rdih1cw9qz75vam-gastown-1.2.1.drv
  /nix/store/pyyhk8i65n8qdm0rpv6ach75phhi1vr8-check-gastown.drv
building '/nix/store/g3psq35kn18q6adb3rdih1cw9qz75vam-gastown-1.2.1.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/g3psq35kn18q6adb3rdih1cw9qz75vam-gastown-1.2.1.drv' on farm.numtide.com:50051
gastown-1.2.1> mac02: building g3psq35kn18q6adb3rdih1cw9qz75vam-gastown-1.2.1.drv
gastown-1.2.1> Using versionCheckHook
gastown-1.2.1> Running phase: unpackPhase
gastown-1.2.1> unpacking source archive /nix/store/y7x9b4ilnn4ph9hy886bnp0kmisd0fqk-source
gastown-1.2.1> source root is source
gastown-1.2.1> Running phase: patchPhase
gastown-1.2.1> Running phase: updateAutotoolsGnuConfigScriptsPhase
gastown-1.2.1> Running phase: configurePhase
gastown-1.2.1> Running phase: buildPhase
gastown-1.2.1> Building subPackage ./cmd/gt
gastown-1.2.1> Running phase: installPhase
gastown-1.2.1> Running phase: fixupPhase
gastown-1.2.1> checking for references to /nix/var/nix/builds/nix-15940-2340912588/ in /nix/store/ykqjmsm5vdkll204d9n6f86hyxarxvjd-gastown-1.2.1...
gastown-1.2.1> patching script interpreter paths in /nix/store/ykqjmsm5vdkll204d9n6f86hyxarxvjd-gastown-1.2.1
gastown-1.2.1> stripping (with command strip and flags -S) in /nix/store/ykqjmsm5vdkll204d9n6f86hyxarxvjd-gastown-1.2.1/bin
gastown-1.2.1> Running phase: installCheckPhase
gastown-1.2.1> Executing versionCheckPhase
gastown-1.2.1> Successfully managed to find version 1.2.1 in the output of the command /nix/store/ykqjmsm5vdkll204d9n6f86hyxarxvjd-gastown-1.2.1/bin/gt --version
gastown-1.2.1> gt version 1.2.1
gastown-1.2.1> Finished versionCheckPhase
gastown-1.2.1> no Makefile or custom installCheckPhase, doing nothing
building '/nix/store/pyyhk8i65n8qdm0rpv6ach75phhi1vr8-check-gastown.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/pyyhk8i65n8qdm0rpv6ach75phhi1vr8-check-gastown.drv' on farm.numtide.com:50051
check-gastown> mac02: building pyyhk8i65n8qdm0rpv6ach75phhi1vr8-check-gastown.drv