[INFO] fetching crate nixpkgs-fmt 1.0.0...
[INFO] checking nixpkgs-fmt-1.0.0 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate nixpkgs-fmt 1.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate nixpkgs-fmt 1.0.0 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nixpkgs-fmt 1.0.0
[INFO] finished tweaking crates.io crate nixpkgs-fmt 1.0.0
[INFO] tweaked toml for crates.io crate nixpkgs-fmt 1.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate nixpkgs-fmt 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rowan v0.6.3
[INFO] [stderr]   Downloaded smol_str v0.1.15
[INFO] [stderr]   Downloaded ignore v0.4.13
[INFO] [stderr]   Downloaded rnix v0.7.2
[INFO] [stderr]   Downloaded text_unit v0.1.10
[INFO] [stderr]   Downloaded unindent v0.1.5
[INFO] [stderr]   Downloaded cbitset v0.2.0
[INFO] [stderr]   Downloaded regex v1.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 26df89d33d2ba59d12edec4fd412cd9d0fd23e2074efe87cf50cad23bf15d2c6
[INFO] running `Command { std: "docker" "start" "-a" "26df89d33d2ba59d12edec4fd412cd9d0fd23e2074efe87cf50cad23bf15d2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26df89d33d2ba59d12edec4fd412cd9d0fd23e2074efe87cf50cad23bf15d2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26df89d33d2ba59d12edec4fd412cd9d0fd23e2074efe87cf50cad23bf15d2c6", kill_on_drop: false }`
[INFO] [stdout] 26df89d33d2ba59d12edec4fd412cd9d0fd23e2074efe87cf50cad23bf15d2c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fc9758e077092e76dbaf229dec391476b6d63fbae5f7795e6adfa61f8711489
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2fc9758e077092e76dbaf229dec391476b6d63fbae5f7795e6adfa61f8711489", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking smol_str v0.1.15
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking unindent v0.1.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking cbitset v0.2.0
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking text_unit v0.1.10
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking rowan v0.6.3
[INFO] [stderr]     Checking ignore v0.4.13
[INFO] [stderr]     Checking rnix v0.7.2
[INFO] [stderr]     Checking nixpkgs-fmt v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.85s
[INFO] running `Command { std: "docker" "inspect" "2fc9758e077092e76dbaf229dec391476b6d63fbae5f7795e6adfa61f8711489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc9758e077092e76dbaf229dec391476b6d63fbae5f7795e6adfa61f8711489", kill_on_drop: false }`
[INFO] [stdout] 2fc9758e077092e76dbaf229dec391476b6d63fbae5f7795e6adfa61f8711489