[INFO] cloning repository https://github.com/colin353/piano
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colin353/piano" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin353%2Fpiano", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin353%2Fpiano'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a2b0f6041cce529ada69b653748c9d8c639328b
[INFO] testing colin353/piano against 1.98.0-beta.1 for beta-1.98-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin353%2Fpiano" "/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/colin353/piano
[INFO] finished tweaking git repo https://github.com/colin353/piano
[INFO] tweaked toml for git repo https://github.com/colin353/piano written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/colin353/piano on toolchain 1.98.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/colin353/piano 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" "+1.98.0-beta.1" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-core v0.56.0
[INFO] [stderr]   Downloaded windows-interface v0.56.0
[INFO] [stderr]   Downloaded midly v0.5.3
[INFO] [stderr]   Downloaded midir v0.10.4
[INFO] [stderr]   Downloaded coreaudio-rs v0.13.0
[INFO] [stderr]   Downloaded windows-implement v0.56.0
[INFO] [stderr]   Downloaded coremidi v0.9.0
[INFO] [stderr]   Downloaded cpal v0.16.0
[INFO] [stderr]   Downloaded windows v0.56.0
[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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f
[INFO] running `Command { std: "docker" "start" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", 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" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling bitflags v2.13.0
[INFO] [stderr]    Compiling cpal v0.16.0
[INFO] [stderr]    Compiling either v1.16.0
[INFO] [stderr]    Compiling memchr v2.8.1
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling hound v3.5.1
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling alsa v0.9.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling midir v0.10.4
[INFO] [stderr]    Compiling midly v0.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling piano v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:527:13
[INFO] [stdout]     |
[INFO] [stdout] 527 |         let mut push = |freq: f32, amp_db: f32, decay_db_s: f32, body: &mut Body| {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_amp`
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_amp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_decay`
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_decay`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_b`
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_a`
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `damper_factor` is never used
[INFO] [stdout]    --> src/modal2.rs:731:4
[INFO] [stdout]     |
[INFO] [stdout] 731 | fn damper_factor(note: u8, sample_rate: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[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 8.70s
[INFO] running `Command { std: "docker" "inspect" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:527:13
[INFO] [stdout]     |
[INFO] [stdout] 527 |         let mut push = |freq: f32, amp_db: f32, decay_db_s: f32, body: &mut Body| {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_amp`
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_amp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_decay`
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_decay`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_b`
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling piano v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `perc_a`
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `damper_factor` is never used
[INFO] [stdout]    --> src/modal2.rs:731:4
[INFO] [stdout]     |
[INFO] [stdout] 731 | fn damper_factor(note: u8, sample_rate: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:527:13
[INFO] [stdout]     |
[INFO] [stdout] 527 |         let mut push = |freq: f32, amp_db: f32, decay_db_s: f32, body: &mut Body| {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_amp`
[INFO] [stdout]    --> src/modal2.rs:787:13
[INFO] [stdout]     |
[INFO] [stdout] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_amp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_decay`
[INFO] [stdout]    --> src/modal2.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_decay`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_b`
[INFO] [stdout]    --> src/modal2.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `perc_a`
[INFO] [stdout]    --> src/modal2.rs:790:13
[INFO] [stdout]     |
[INFO] [stdout] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `damper_factor` is never used
[INFO] [stdout]    --> src/modal2.rs:731:4
[INFO] [stdout]     |
[INFO] [stdout] 731 | fn damper_factor(note: u8, sample_rate: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/modal2.rs:527:13
[INFO] [stderr]     |
[INFO] [stderr] 527 |         let mut push = |freq: f32, amp_db: f32, decay_db_s: f32, body: &mut Body| {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/modal2.rs:787:13
[INFO] [stderr]     |
[INFO] [stderr] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/modal2.rs:788:13
[INFO] [stderr]     |
[INFO] [stderr] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/modal2.rs:789:13
[INFO] [stderr]     |
[INFO] [stderr] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/modal2.rs:790:13
[INFO] [stderr]     |
[INFO] [stderr] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `perc_amp`
[INFO] [stderr]    --> src/modal2.rs:787:13
[INFO] [stderr]     |
[INFO] [stderr] 787 |         let mut perc_amp = [0f32; 4];
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_amp`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `perc_decay`
[INFO] [stderr]    --> src/modal2.rs:788:13
[INFO] [stderr]     |
[INFO] [stderr] 788 |         let mut perc_decay = [0f32; 4];
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_decay`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `perc_b`
[INFO] [stderr]    --> src/modal2.rs:789:13
[INFO] [stderr]     |
[INFO] [stderr] 789 |         let mut perc_b = [(0f32, 0f32, 0f32); 4];
[INFO] [stderr]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `perc_a`
[INFO] [stderr]    --> src/modal2.rs:790:13
[INFO] [stderr]     |
[INFO] [stderr] 790 |         let mut perc_a = [(0f32, 0f32); 4];
[INFO] [stderr]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perc_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function `damper_factor` is never used
[INFO] [stderr]    --> src/modal2.rs:731:4
[INFO] [stderr]     |
[INFO] [stderr] 731 | fn damper_factor(note: u8, sample_rate: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `piano` (lib) generated 10 warnings (run `cargo fix --lib -p piano` to apply 9 suggestions)
[INFO] [stderr] warning: `piano` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/piano-3f03116e573c5da9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/piano-ec26494f48a63c1e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/live.rs (/opt/rustwide/target/debug/deps/piano_live-3eec3ab09d974c63)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/render.rs (/opt/rustwide/target/debug/deps/piano_render-a567cb5123722414)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests piano
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f", kill_on_drop: false }`
[INFO] [stdout] dee75db418a4806d344eae9af60d54e184dde885c06ff57a4f2950e97ced7f9f
