these 4 derivations will be built:
  /nix/store/0b642lygh2v95aiylq1xdzr46n2llici-source.drv
  /nix/store/b3q3gx9dql5j9cwv26p1q2v074dhid0s-cli-proxy-api-8.0.51-go-modules.drv
  /nix/store/h08lfiimkdsqbflzdq29srgs8p9isa5v-cli-proxy-api-8.0.51.drv
  /nix/store/zlnb6g9qk5pj6x2719l7lql1g0hhh759-check-cli-proxy-api.drv
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
cannot build on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token': error: gRPC StoreInfo on 'farm.numtide.com:50051' failed: no healthy upstream
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
cannot build on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token': error: gRPC StoreInfo on 'farm.numtide.com:50051' failed: no healthy upstream
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
cannot build on 'grpc://farm.numtide.com:50051?connect-timeout=23&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token': error: gRPC StoreInfo on 'farm.numtide.com:50051' failed: no healthy upstream
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
farm.numtide.com:50051: no healthy upstream, retrying
cannot build on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token': error: gRPC StoreInfo on 'farm.numtide.com:50051' failed: no healthy upstream
       hint: Set NIX_GRPC_DEBUG=1 for a handshake trace.
Failed to find a machine for remote build!
derivation: riw1hrk3dj77l6494x7bmb06gwcisvwf-source.drv
required (system, features): (aarch64-linux, [])
12 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin], 8, [apple-virt, big-parallel, nixos-test, recursive-nix], [])
([aarch64-darwin], 8, [apple-virt, big-parallel, nixos-test, recursive-nix], [])
([aarch64-darwin], 8, [apple-virt, big-parallel, nixos-test, recursive-nix], [])
([aarch64-darwin], 8, [apple-virt, big-parallel, nixos-test, recursive-nix], [])
([aarch64-linux], 8, [big-parallel, kvm, nixos-test, recursive-nix, uid-range], [])
([aarch64-linux], 8, [big-parallel, kvm, nixos-test, recursive-nix, uid-range], [])
([aarch64-linux], 8, [big-parallel, kvm, nixos-test, recursive-nix, uid-range], [])
([aarch64-linux], 8, [big-parallel, kvm, nixos-test, recursive-nix, uid-range], [])
([x86_64-darwin], 8, [big-parallel, nixos-test, recursive-nix], [])
([x86_64-darwin], 8, [big-parallel, nixos-test, recursive-nix], [])
([x86_64-darwin], 8, [big-parallel, nixos-test, recursive-nix], [])
([x86_64-darwin], 8, [big-parallel, nixos-test, recursive-nix], [])
error: Cannot build '/nix/store/riw1hrk3dj77l6494x7bmb06gwcisvwf-source.drv'.
       Reason: platform mismatch
       Required system: 'aarch64-linux'
       Current system: 'x86_64-linux'
error: build of resolved derivation '/nix/store/riw1hrk3dj77l6494x7bmb06gwcisvwf-source.drv' failed
error: Cannot build '/nix/store/b3q3gx9dql5j9cwv26p1q2v074dhid0s-cli-proxy-api-8.0.51-go-modules.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/qa7p095m9mkj94wmdcs5g03gvn5k6i13-cli-proxy-api-8.0.51-go-modules
error: Cannot build '/nix/store/h08lfiimkdsqbflzdq29srgs8p9isa5v-cli-proxy-api-8.0.51.drv'.
       Reason: 2 dependencies failed.
       Output paths:
         /nix/store/1dqy3x2sdb1kwp4am8sxsjjbb3fv9n0q-cli-proxy-api-8.0.51
error: Cannot build '/nix/store/zlnb6g9qk5pj6x2719l7lql1g0hhh759-check-cli-proxy-api.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/9gkgskvzla0qxinj893vkcikbli0z6k8-check-cli-proxy-api