[INFO] cloning repository https://github.com/devvildaz/tree_queen_rust_parallel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/devvildaz/tree_queen_rust_parallel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevvildaz%2Ftree_queen_rust_parallel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevvildaz%2Ftree_queen_rust_parallel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4bd6f8965e23c71508bc3eda7c84791cf35146c1
[INFO] checking devvildaz/tree_queen_rust_parallel against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevvildaz%2Ftree_queen_rust_parallel" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/devvildaz/tree_queen_rust_parallel
[INFO] finished tweaking git repo https://github.com/devvildaz/tree_queen_rust_parallel
[INFO] tweaked toml for git repo https://github.com/devvildaz/tree_queen_rust_parallel written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/devvildaz/tree_queen_rust_parallel on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/devvildaz/tree_queen_rust_parallel 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5423b8d77500418900fb2827fcec3b9259846f39f972e8a0382c6a592f868fe
[INFO] running `Command { std: "docker" "start" "-a" "e5423b8d77500418900fb2827fcec3b9259846f39f972e8a0382c6a592f868fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5423b8d77500418900fb2827fcec3b9259846f39f972e8a0382c6a592f868fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5423b8d77500418900fb2827fcec3b9259846f39f972e8a0382c6a592f868fe", kill_on_drop: false }`
[INFO] [stdout] e5423b8d77500418900fb2827fcec3b9259846f39f972e8a0382c6a592f868fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ef07b82a4b3287e152d380b553428b0c2b360e5b62bf03c558b72f6ff795a20
[INFO] running `Command { std: "docker" "start" "-a" "2ef07b82a4b3287e152d380b553428b0c2b360e5b62bf03c558b72f6ff795a20", kill_on_drop: false }`
[INFO] [stderr]     Checking tree-queen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `add_child` is never used
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl TreeNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn add_child(&mut self ,node: Arc<Mutex<TreeNode>>) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_child` is never used
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl TreeNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn add_child(&mut self ,node: Arc<Mutex<TreeNode>>) {
[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 0.28s
[INFO] running `Command { std: "docker" "inspect" "2ef07b82a4b3287e152d380b553428b0c2b360e5b62bf03c558b72f6ff795a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ef07b82a4b3287e152d380b553428b0c2b360e5b62bf03c558b72f6ff795a20", kill_on_drop: false }`
[INFO] [stdout] 2ef07b82a4b3287e152d380b553428b0c2b360e5b62bf03c558b72f6ff795a20