[INFO] cloning repository https://github.com/katk3n/learn-cpal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/katk3n/learn-cpal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatk3n%2Flearn-cpal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatk3n%2Flearn-cpal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f124958b50ca8bc93e7fb1d26cdc1f43c397ae0a
[INFO] checking katk3n/learn-cpal against f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1 for pr-160235-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatk3n%2Flearn-cpal" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/katk3n/learn-cpal
[INFO] finished tweaking git repo https://github.com/katk3n/learn-cpal
[INFO] tweaked toml for git repo https://github.com/katk3n/learn-cpal written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/katk3n/learn-cpal on toolchain f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/katk3n/learn-cpal 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" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141
[INFO] running `Command { std: "docker" "start" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141", 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" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141", 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" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking cache-padded v1.3.0
[INFO] [stderr]     Checking ringbuf v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking microfft v0.5.1
[INFO] [stderr]     Checking alsa v0.7.0
[INFO] [stderr]     Checking spectrum-analyzer v1.4.0
[INFO] [stderr]     Checking learn-cpal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Consumer` and `Producer`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ringbuf::{Consumer, Producer, RingBuffer};
[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 imports: `Consumer` and `Producer`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ringbuf::{Consumer, Producer, RingBuffer};
[INFO] [stdout]   |               ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     loop {
[INFO] [stdout] 45 | |         if cons.len() < NUM_SAMPLES {
[INFO] [stdout] 46 | |             continue;
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |         );
[INFO] [stdout] 59 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 60 |
[INFO] [stdout] 61 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     loop {
[INFO] [stdout] 45 | |         if cons.len() < NUM_SAMPLES {
[INFO] [stdout] 46 | |             continue;
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |         );
[INFO] [stdout] 59 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 60 |
[INFO] [stdout] 61 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141", kill_on_drop: false }`
[INFO] [stdout] 4ff619b290214dec27e55d3bcdc8e8d66444e9a23d9a4cb6d340dfbf81174141