[INFO] cloning repository https://github.com/jackxbritton/cord
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackxbritton/cord" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackxbritton%2Fcord", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackxbritton%2Fcord'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 018b7a2bbb827b97f0cddf62eba72204104f2e8f
[INFO] checking jackxbritton/cord against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackxbritton%2Fcord" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackxbritton/cord on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jackxbritton/cord
[INFO] finished tweaking git repo https://github.com/jackxbritton/cord
[INFO] tweaked toml for git repo https://github.com/jackxbritton/cord written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jackxbritton/cord already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlc v3.1.7
[INFO] [stderr]   Downloaded serde_yaml v0.8.14
[INFO] [stderr]   Downloaded jack v0.6.2
[INFO] [stderr]   Downloaded jack-sys v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe18886191ff9b3301437a28093992c2c6e3a9f9f1e46f9ca3043818c5315418
[INFO] running `Command { std: "docker" "start" "-a" "fe18886191ff9b3301437a28093992c2c6e3a9f9f1e46f9ca3043818c5315418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe18886191ff9b3301437a28093992c2c6e3a9f9f1e46f9ca3043818c5315418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe18886191ff9b3301437a28093992c2c6e3a9f9f1e46f9ca3043818c5315418", kill_on_drop: false }`
[INFO] [stdout] fe18886191ff9b3301437a28093992c2c6e3a9f9f1e46f9ca3043818c5315418
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6c2e16facd4404dbebb38adcc2ac93aede57df41a098827ce9682d63c8855e7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b6c2e16facd4404dbebb38adcc2ac93aede57df41a098827ce9682d63c8855e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking jack-sys v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking jack v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking cord v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backend/jack.rs:280:13
[INFO] [stdout]     |
[INFO] [stdout] 280 |         let mut input_port = client.register_port("in", jack::MidiIn::default())?;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backend/jack.rs:280:13
[INFO] [stdout]     |
[INFO] [stdout] 280 |         let mut input_port = client.register_port("in", jack::MidiIn::default())?;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]    --> src/backend/jack.rs:334:37
[INFO] [stdout]     |
[INFO] [stdout] 334 |                 for jack::RawMidi { time, bytes } in input_port.iter(ps) {}
[INFO] [stdout]     |                                     ^^^^ help: try ignoring the field: `time: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/backend/jack.rs:334:43
[INFO] [stdout]     |
[INFO] [stdout] 334 |                 for jack::RawMidi { time, bytes } in input_port.iter(ps) {}
[INFO] [stdout]     |                                           ^^^^^ help: try ignoring the field: `bytes: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ControlChange`
[INFO] [stdout]   --> src/backend/backend.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     ControlChange {
[INFO] [stdout] 13 | |         controller: u8,
[INFO] [stdout] 14 | |         value: u8,
[INFO] [stdout] 15 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]    --> src/backend/jack.rs:334:37
[INFO] [stdout]     |
[INFO] [stdout] 334 |                 for jack::RawMidi { time, bytes } in input_port.iter(ps) {}
[INFO] [stdout]     |                                     ^^^^ help: try ignoring the field: `time: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/backend/jack.rs:334:43
[INFO] [stdout]     |
[INFO] [stdout] 334 |                 for jack::RawMidi { time, bytes } in input_port.iter(ps) {}
[INFO] [stdout]     |                                           ^^^^^ help: try ignoring the field: `bytes: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ControlChange`
[INFO] [stdout]   --> src/backend/backend.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     ControlChange {
[INFO] [stdout] 13 | |         controller: u8,
[INFO] [stdout] 14 | |         value: u8,
[INFO] [stdout] 15 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.66s
[INFO] running `Command { std: "docker" "inspect" "b6c2e16facd4404dbebb38adcc2ac93aede57df41a098827ce9682d63c8855e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6c2e16facd4404dbebb38adcc2ac93aede57df41a098827ce9682d63c8855e7", kill_on_drop: false }`
[INFO] [stdout] b6c2e16facd4404dbebb38adcc2ac93aede57df41a098827ce9682d63c8855e7