[INFO] cloning repository https://github.com/sakurafisch/list_of_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sakurafisch/list_of_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2Flist_of_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2Flist_of_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e32aa1f0b39f0794eccf4b31551d230beca8980a
[INFO] checking sakurafisch/list_of_rust against master#db0e836148accac8a22532e3596ac612b63c2d8e for pr-139272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2Flist_of_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sakurafisch/list_of_rust on toolchain db0e836148accac8a22532e3596ac612b63c2d8e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sakurafisch/list_of_rust
[INFO] finished tweaking git repo https://github.com/sakurafisch/list_of_rust
[INFO] tweaked toml for git repo https://github.com/sakurafisch/list_of_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sakurafisch/list_of_rust 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" "+db0e836148accac8a22532e3596ac612b63c2d8e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 486e31be1fce91fa397ce1eb6be93ac53ccd3e95c6f601524cbec67366630a9e
[INFO] running `Command { std: "docker" "start" "-a" "486e31be1fce91fa397ce1eb6be93ac53ccd3e95c6f601524cbec67366630a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "486e31be1fce91fa397ce1eb6be93ac53ccd3e95c6f601524cbec67366630a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "486e31be1fce91fa397ce1eb6be93ac53ccd3e95c6f601524cbec67366630a9e", kill_on_drop: false }`
[INFO] [stdout] 486e31be1fce91fa397ce1eb6be93ac53ccd3e95c6f601524cbec67366630a9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb21c75915587d81168b70c11578142e5cd00cafb41a3de823b8a8ed09c19da3
[INFO] running `Command { std: "docker" "start" "-a" "bb21c75915587d81168b70c11578142e5cd00cafb41a3de823b8a8ed09c19da3", kill_on_drop: false }`
[INFO] [stderr]     Checking list_of_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/silly1.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> List<T> {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new() -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "bb21c75915587d81168b70c11578142e5cd00cafb41a3de823b8a8ed09c19da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb21c75915587d81168b70c11578142e5cd00cafb41a3de823b8a8ed09c19da3", kill_on_drop: false }`
[INFO] [stdout] bb21c75915587d81168b70c11578142e5cd00cafb41a3de823b8a8ed09c19da3