[INFO] cloning repository https://github.com/stuffincode/midair
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stuffincode/midair" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstuffincode%2Fmidair", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstuffincode%2Fmidair'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a1834ce2bdd6140243e1acf6f14ba7cd8ef11cf
[INFO] checking stuffincode/midair against try#163937523761cc0def32f1ba9ed63fdf65ad3478 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstuffincode%2Fmidair" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/stuffincode/midair
[INFO] finished tweaking git repo https://github.com/stuffincode/midair
[INFO] tweaked toml for git repo https://github.com/stuffincode/midair written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stuffincode/midair on toolchain 163937523761cc0def32f1ba9ed63fdf65ad3478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/stuffincode/midair 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" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24
[INFO] running `Command { std: "docker" "start" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24", 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" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24", 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" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking alsa v0.7.1
[INFO] [stderr]     Checking midir v0.9.1
[INFO] [stderr]     Checking midair v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/main.rs:3:32
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{channel, Receiver};
[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 variable: `in_conn`
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let in_conn = midi_in.connect(in_port, "midir-test-in", move |_, message, _| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_conn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/main.rs:3:32
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{channel, Receiver};
[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 4.07s
[INFO] [stdout] warning: unused variable: `in_conn`
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let in_conn = midi_in.connect(in_port, "midir-test-in", move |_, message, _| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_in_conn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24", kill_on_drop: false }`
[INFO] [stdout] a07362d6fcd3ed4aa6a61f2497e843f801e99dc5292333a3bc2b8b18a6652e24
