warning: could not read HEAD ref from repo at '/var/lib/nixbot/worktrees/effect-192', using 'master' warning: could not read HEAD ref from repo at '/var/lib/nixbot/worktrees/effect-192', using 'master' Cloning into 'repo'... Switched to a new branch 'update/readme' branch 'update/readme' set up to track 'origin/main'. /build/.attr-buildCommand: ./scripts/generate-package-docs.py: /usr/bin/env: bad interpreter: No such file or directory error: command failed with exit code 126