[INFO] cloning repository https://github.com/julyfun/rs-web-hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julyfun/rs-web-hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyfun%2Frs-web-hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyfun%2Frs-web-hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75a62fdc41fcf674259af3ed9c6db49df05122c7
[INFO] checking julyfun/rs-web-hello against 760e1de835e253bf28bbcbfee38b5e8ed9ffe074 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyfun%2Frs-web-hello" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/julyfun/rs-web-hello
[INFO] finished tweaking git repo https://github.com/julyfun/rs-web-hello
[INFO] tweaked toml for git repo https://github.com/julyfun/rs-web-hello written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/julyfun/rs-web-hello on toolchain 760e1de835e253bf28bbcbfee38b5e8ed9ffe074
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/julyfun/rs-web-hello 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" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking julyfun/rs-web-hello against 760e1de835e253bf28bbcbfee38b5e8ed9ffe074 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyfun%2Frs-web-hello" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/julyfun/rs-web-hello
[INFO] finished tweaking git repo https://github.com/julyfun/rs-web-hello
[INFO] tweaked toml for git repo https://github.com/julyfun/rs-web-hello written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/julyfun/rs-web-hello on toolchain 760e1de835e253bf28bbcbfee38b5e8ed9ffe074
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/julyfun/rs-web-hello 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" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "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-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208
[INFO] running `Command { std: "docker" "start" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rs-web-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut threads = Vec::with_capacity(size);
[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] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `threads` is never read
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 4 |     threads: Vec<thread::JoinHandle<()>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut threads = Vec::with_capacity(size);
[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] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `threads` is never read
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 4 |     threads: Vec<thread::JoinHandle<()>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rs_web_hello::ThreadPool`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rs_web_hello::ThreadPool;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rs_web_hello::ThreadPool`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rs_web_hello::ThreadPool;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208", kill_on_drop: false }`
[INFO] [stdout] a130dfe39a828a297e282bcfe1e24dfb2f71a42e335cef97b8161e9fcab82208
