[INFO] fetching crate scc_tarjan 0.1.0...
[INFO] building scc_tarjan-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate scc_tarjan 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate scc_tarjan 0.1.0
[INFO] finished tweaking crates.io crate scc_tarjan 0.1.0
[INFO] tweaked toml for crates.io crate scc_tarjan 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scc_tarjan 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scc_tarjan 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc3d8ffe86a3aefddb781f14e07c3243063ec3673d8415188deebc1621d70768
[INFO] running `Command { std: "docker" "start" "-a" "dc3d8ffe86a3aefddb781f14e07c3243063ec3673d8415188deebc1621d70768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc3d8ffe86a3aefddb781f14e07c3243063ec3673d8415188deebc1621d70768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc3d8ffe86a3aefddb781f14e07c3243063ec3673d8415188deebc1621d70768", kill_on_drop: false }`
[INFO] [stdout] dc3d8ffe86a3aefddb781f14e07c3243063ec3673d8415188deebc1621d70768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33f76fd00f6af0e0aacb7581db12a5ce20a789c53cddbe20784b99b3ba9596e9
[INFO] running `Command { std: "docker" "start" "-a" "33f76fd00f6af0e0aacb7581db12a5ce20a789c53cddbe20784b99b3ba9596e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling scc_tarjan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "33f76fd00f6af0e0aacb7581db12a5ce20a789c53cddbe20784b99b3ba9596e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33f76fd00f6af0e0aacb7581db12a5ce20a789c53cddbe20784b99b3ba9596e9", kill_on_drop: false }`
[INFO] [stdout] 33f76fd00f6af0e0aacb7581db12a5ce20a789c53cddbe20784b99b3ba9596e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef98bd82ed01aeaa355b48776dc81a7cf8040169f733185fccaf79fe0a8b8357
[INFO] running `Command { std: "docker" "start" "-a" "ef98bd82ed01aeaa355b48776dc81a7cf8040169f733185fccaf79fe0a8b8357", kill_on_drop: false }`
[INFO] [stderr]    Compiling scc_tarjan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut comps = collect_scc(&g);
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "ef98bd82ed01aeaa355b48776dc81a7cf8040169f733185fccaf79fe0a8b8357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef98bd82ed01aeaa355b48776dc81a7cf8040169f733185fccaf79fe0a8b8357", kill_on_drop: false }`
[INFO] [stdout] ef98bd82ed01aeaa355b48776dc81a7cf8040169f733185fccaf79fe0a8b8357