this derivation will be built:
  /nix/store/iprzh2q5p8p2vdsrk7sklldn60nip99b-gastown-1.2.1.drv
bld4: building iprzh2q5p8p2vdsrk7sklldn60nip99b-gastown-1.2.1.drv
Using versionCheckHook
Running phase: unpackPhase
unpacking source archive /nix/store/y7x9b4ilnn4ph9hy886bnp0kmisd0fqk-source
source root is source
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
Running phase: buildPhase
Building subPackage ./cmd/gt
error: worker shutting down, build interrupted, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, retrying elsewhere
bld4: building iprzh2q5p8p2vdsrk7sklldn60nip99b-gastown-1.2.1.drv
Using versionCheckHook
Running phase: unpackPhase
unpacking source archive /nix/store/y7x9b4ilnn4ph9hy886bnp0kmisd0fqk-source
source root is source
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
Running phase: buildPhase
Building subPackage ./cmd/gt
buildPhase completed in 2 minutes 47 seconds
Running phase: installPhase
Running phase: fixupPhase
shrinking RPATHs of ELF executables and libraries in /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1
shrinking /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1/bin/.gt-wrapped
checking for references to /build/ in /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1...
patching script interpreter paths in /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1
stripping (with command strip and flags -S -p) in /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1/bin
Running phase: installCheckPhase
Executing versionCheckPhase
Successfully managed to find version 1.2.1 in the output of the command /nix/store/3bbbk4pry3mb5frgfmq9qp6sq3mm0zjv-gastown-1.2.1/bin/gt --version
gt version 1.2.1
Finished versionCheckPhase
no Makefile or custom installCheckPhase, doing nothing