[INFO] cloning repository https://github.com/mmalkindi/advprog-modul6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmalkindi/advprog-modul6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmalkindi%2Fadvprog-modul6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmalkindi%2Fadvprog-modul6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5e555844759296fc62644a5af49c8fdea7cde3c
[INFO] checking mmalkindi/advprog-modul6 against master#5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea for pr-124336
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmalkindi%2Fadvprog-modul6" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmalkindi/advprog-modul6 on toolchain 5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mmalkindi/advprog-modul6
[INFO] finished tweaking git repo https://github.com/mmalkindi/advprog-modul6
[INFO] tweaked toml for git repo https://github.com/mmalkindi/advprog-modul6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mmalkindi/advprog-modul6 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" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking mmalkindi/advprog-modul6 against try#311f8b6ca41358db8ae08490a9ca0916f11e9de3 for pr-124336
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmalkindi%2Fadvprog-modul6" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmalkindi/advprog-modul6 on toolchain 311f8b6ca41358db8ae08490a9ca0916f11e9de3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mmalkindi/advprog-modul6
[INFO] finished tweaking git repo https://github.com/mmalkindi/advprog-modul6
[INFO] tweaked toml for git repo https://github.com/mmalkindi/advprog-modul6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mmalkindi/advprog-modul6 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" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38429a48db0fabd6d1abfe758d5f16cfe24a54f5873231e90c9691f6a6484c91
[INFO] running `Command { std: "docker" "start" "-a" "38429a48db0fabd6d1abfe758d5f16cfe24a54f5873231e90c9691f6a6484c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38429a48db0fabd6d1abfe758d5f16cfe24a54f5873231e90c9691f6a6484c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38429a48db0fabd6d1abfe758d5f16cfe24a54f5873231e90c9691f6a6484c91", kill_on_drop: false }`
[INFO] [stdout] 38429a48db0fabd6d1abfe758d5f16cfe24a54f5873231e90c9691f6a6484c91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5c79059f5555cc0cc5bd47fe0cd1cfd2cda8712259c16bb8287a7ed5ed9a363
[INFO] running `Command { std: "docker" "start" "-a" "a5c79059f5555cc0cc5bd47fe0cd1cfd2cda8712259c16bb8287a7ed5ed9a363", 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:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/lib.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 39 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/lib.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 39 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "a5c79059f5555cc0cc5bd47fe0cd1cfd2cda8712259c16bb8287a7ed5ed9a363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c79059f5555cc0cc5bd47fe0cd1cfd2cda8712259c16bb8287a7ed5ed9a363", kill_on_drop: false }`
[INFO] [stdout] a5c79059f5555cc0cc5bd47fe0cd1cfd2cda8712259c16bb8287a7ed5ed9a363