[INFO] cloning repository https://github.com/MatthewZ0823/scoremuse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MatthewZ0823/scoremuse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewZ0823%2Fscoremuse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewZ0823%2Fscoremuse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42b0f35b3f513814bb1fdf8cd6bad3ae2bae82c2
[INFO] checking MatthewZ0823/scoremuse against 7211ea594cbf137ef6118b1752b959dea7cb9088 for pr-164148-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthewZ0823%2Fscoremuse" "/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/MatthewZ0823/scoremuse
[INFO] finished tweaking git repo https://github.com/MatthewZ0823/scoremuse
[INFO] tweaked toml for git repo https://github.com/MatthewZ0823/scoremuse written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MatthewZ0823/scoremuse on toolchain 7211ea594cbf137ef6118b1752b959dea7cb9088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MatthewZ0823/scoremuse 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" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155
[INFO] running `Command { std: "docker" "start" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155", 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" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155" "/opt/rustwide/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155", 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" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155" "/opt/rustwide/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `audio_handle`
[INFO] [stdout]   --> src/playback.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     audio_handle: Arc<MixerDeviceSink>,
[INFO] [stdout]    |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `audio_handle`
[INFO] [stdout]   --> src/playback.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     audio_handle: Arc<MixerDeviceSink>,
[INFO] [stdout]    |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `SelectNote` is never constructed
[INFO] [stdout]    --> src/staff.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub enum StaffInteractionMsg {
[INFO] [stdout]     |          ------------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 286 |     SelectNote(StaffIndex),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StaffInteractionMsg` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `SelectNote` is never constructed
[INFO] [stdout]    --> src/staff.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub enum StaffInteractionMsg {
[INFO] [stdout]     |          ------------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 286 |     SelectNote(StaffIndex),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StaffInteractionMsg` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/playback.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     stream.play();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let _ = stream.play();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/playback.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 | / ...                   match command {
[INFO] [stdout] 119 | | ...                       AudioCommand::Resume => stream.play(),
[INFO] [stdout] 120 | | ...                       AudioCommand::Pause => stream.pause(),
[INFO] [stdout] 121 | | ...                   };
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |                             let _ = match command {
[INFO] [stdout]     |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/playback.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     stream.play();
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let _ = stream.play();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/playback.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 | / ...                   match command {
[INFO] [stdout] 119 | | ...                       AudioCommand::Resume => stream.play(),
[INFO] [stdout] 120 | | ...                       AudioCommand::Pause => stream.pause(),
[INFO] [stdout] 121 | | ...                   };
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |                             let _ = match command {
[INFO] [stdout]     |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 00s
[INFO] running `Command { std: "docker" "inspect" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155", kill_on_drop: false }`
[INFO] [stdout] a57665010b7d736fc4d5d3e7a090caf5fa8cc5a17973f2037dd08da777025155