[INFO] cloning repository https://github.com/sheldonoreoli/02-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sheldonoreoli/02-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsheldonoreoli%2F02-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsheldonoreoli%2F02-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63f78f789970ffd80c189deed5ed866b6668cc46
[INFO] checking sheldonoreoli/02-concurrency against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsheldonoreoli%2F02-concurrency" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sheldonoreoli/02-concurrency
[INFO] finished tweaking git repo https://github.com/sheldonoreoli/02-concurrency
[INFO] tweaked toml for git repo https://github.com/sheldonoreoli/02-concurrency written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sheldonoreoli/02-concurrency on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sheldonoreoli/02-concurrency 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e7e22f021c3ded4622869678d5274cda3a50377196a7737e00557612471051a
[INFO] running `Command { std: "docker" "start" "-a" "3e7e22f021c3ded4622869678d5274cda3a50377196a7737e00557612471051a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e7e22f021c3ded4622869678d5274cda3a50377196a7737e00557612471051a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e7e22f021c3ded4622869678d5274cda3a50377196a7737e00557612471051a", kill_on_drop: false }`
[INFO] [stdout] 3e7e22f021c3ded4622869678d5274cda3a50377196a7737e00557612471051a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c3a466589d1686ba7d0eba49542d08a49f938c97b4e3df37c55ec43593df9f3
[INFO] running `Command { std: "docker" "start" "-a" "3c3a466589d1686ba7d0eba49542d08a49f938c97b4e3df37c55ec43593df9f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fmt::write`
[INFO] [stdout]  --> src/metrics/amap.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::write,
[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: `fmt::write`
[INFO] [stdout]  --> src/metrics/amap.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::write,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]  --> src/matrix.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Matrix<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiply` is never used
[INFO] [stdout]   --> src/matrix.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn multiply<T>(a: &Matrix<T>, b: &Matrix<T>) -> Result<Matrix<T>>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/matrix.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | / impl<T> Matrix<T>
[INFO] [stdout] 40 | | where
[INFO] [stdout] 41 | |     T: fmt::Debug,
[INFO] [stdout]    | |__________________- associated function in this implementation
[INFO] [stdout] 42 |   {
[INFO] [stdout] 43 |       pub fn new(data: impl Into<Vec<T>>, rows: usize, cols: usize) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `value` are never read
[INFO] [stdout]   --> examples/thread1.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Msg {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 11 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 12 |     value: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `Command { std: "docker" "inspect" "3c3a466589d1686ba7d0eba49542d08a49f938c97b4e3df37c55ec43593df9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3a466589d1686ba7d0eba49542d08a49f938c97b4e3df37c55ec43593df9f3", kill_on_drop: false }`
[INFO] [stdout] 3c3a466589d1686ba7d0eba49542d08a49f938c97b4e3df37c55ec43593df9f3
