this derivation will be built:
  /nix/store/wbaihx86znqps8zq7myj95zgy56pj7dj-spec-shfmt.drv
building '/nix/store/wbaihx86znqps8zq7myj95zgy56pj7dj-spec-shfmt.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/wbaihx86znqps8zq7myj95zgy56pj7dj-spec-shfmt.drv' on farm.numtide.com:50051
spec-shfmt> elastic-arm-bdb1245a: building wbaihx86znqps8zq7myj95zgy56pj7dj-spec-shfmt.drv
spec-shfmt> invalid/a.sh:1:10: `then` must be followed by a statement list
spec-shfmt> invalid/a.sh:1:10: `then` must be followed by a statement list