[INFO] cloning repository https://github.com/nadyaaysha/tutorial-6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nadyaaysha/tutorial-6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnadyaaysha%2Ftutorial-6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnadyaaysha%2Ftutorial-6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5620a509a5d5fcdb05522621a16f7105ccbed302
[INFO] checking nadyaaysha/tutorial-6 against try#1baf923b9c3a455162afe43e18647f494c1a4b73 for pr-151510
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnadyaaysha%2Ftutorial-6" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nadyaaysha/tutorial-6
[INFO] finished tweaking git repo https://github.com/nadyaaysha/tutorial-6
[INFO] tweaked toml for git repo https://github.com/nadyaaysha/tutorial-6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nadyaaysha/tutorial-6 on toolchain 1baf923b9c3a455162afe43e18647f494c1a4b73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nadyaaysha/tutorial-6 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" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82b6adbba6f531da40aecd644840e58bd806c0cf6a99d99cf01c9a38b5f744d8
[INFO] running `Command { std: "docker" "start" "-a" "82b6adbba6f531da40aecd644840e58bd806c0cf6a99d99cf01c9a38b5f744d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82b6adbba6f531da40aecd644840e58bd806c0cf6a99d99cf01c9a38b5f744d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82b6adbba6f531da40aecd644840e58bd806c0cf6a99d99cf01c9a38b5f744d8", kill_on_drop: false }`
[INFO] [stdout] 82b6adbba6f531da40aecd644840e58bd806c0cf6a99d99cf01c9a38b5f744d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6c50423836a9e029c64ad06ad577a96ad396038ce2ab84823f6c47ab117752
[INFO] running `Command { std: "docker" "start" "-a" "7c6c50423836a9e029c64ad06ad577a96ad396038ce2ab84823f6c47ab117752", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     thread: Option<thread::JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     thread: Option<thread::JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "7c6c50423836a9e029c64ad06ad577a96ad396038ce2ab84823f6c47ab117752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6c50423836a9e029c64ad06ad577a96ad396038ce2ab84823f6c47ab117752", kill_on_drop: false }`
[INFO] [stdout] 7c6c50423836a9e029c64ad06ad577a96ad396038ce2ab84823f6c47ab117752