this derivation will be built:
  /nix/store/kh54yxmqzfv7qmwd9zcs1r82hln1irsh-flake-inputs.drv
cannot build on 'grpc://farm.numtide.com:8443?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key': error: gRPC StoreInfo on 'farm.numtide.com:8443' failed: errors resolving farm.numtide.com:8443: [field:hostname lookup error:address lookup failed for farm.numtide.com:8443: Domain name not found]
       hint: the server may have rejected the client certificate (untrusted CA or revoked).
building '/nix/store/kh54yxmqzfv7qmwd9zcs1r82hln1irsh-flake-inputs.drv'

post-build step Upload to niks3: ok
time=2026-09-16T08:29:19.895Z level=INFO msg="Uploading 1 paths to niks3.numtide.com (6 already cached)"
time=2026-09-16T08:29:19.896Z level=INFO msg="Uploading q55nzxqgv4jksdpfa8b5pla6dfqwapz3-source (204.3MB)"
time=2026-09-16T08:29:23.036Z level=ERROR msg="Failed to close zstd encoder" error="io: read/write on closed pipe"
time=2026-09-16T08:29:23.038Z level=INFO msg="Uploading 3 narinfos"
time=2026-09-16T08:29:23.408Z level=INFO msg="Upload complete. (3.944s)"