++ mktemp -d + checkout=/tmp/tmp.MX5gd0o79W + trap 'rm -rf "$checkout"' EXIT + cp -R /var/lib/ci-tron/sources/0ed6321f7726cced/. /tmp/tmp.MX5gd0o79W + cd /tmp/tmp.MX5gd0o79W + nix develop --command odin build . -out:term GC Warning: Could not open /proc/stat + rm -rf /tmp/tmp.MX5gd0o79W