these 2 derivations will be built:
  /nix/store/sc0iqyll2qclvpi5kbxc5qvd8ky6fhah-nix-conformance.drv
  /nix/store/4ziigbznvz77ika1wi65bra0j4rxppir-nix-conformance-reference.drv
error: build of '/nix/store/4ziigbznvz77ika1wi65bra0j4rxppir-nix-conformance-reference.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=21&system=aarch64-linux' failed: Cannot build '/nix/store/4ziigbznvz77ika1wi65bra0j4rxppir-nix-conformance-reference.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/vz15vcvdjkxfqbn8rsc0cr7zj0gsyiyi-nix-conformance-reference
       Last 10 log lines:
       > FAIL lang/eval-fail-regex-invalid-043-match.nix
       >   want: an error
       >   got:  null
       > FAIL lang/eval-fail-regex-invalid-043-split.nix
       >   want: an error
       >   got:  [ "" [ ] "" [ ] "" [ ] "" ]
       > FAIL lang/eval-okay-regex-260.nix
       >   want: { m = { ok = [ ]; }; re = "[é-a]+"; s = "éa"; sp = { ok = [ "" [ ] "" ]; }; }
       >   got:   (exit 1)
       > 947 passed, 3 failed, 0 known, 0 skipped
       For full logs, run:
         nix log /nix/store/4ziigbznvz77ika1wi65bra0j4rxppir-nix-conformance-reference.drv
error: Cannot build '/nix/store/4ziigbznvz77ika1wi65bra0j4rxppir-nix-conformance-reference.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/vz15vcvdjkxfqbn8rsc0cr7zj0gsyiyi-nix-conformance-reference