[INFO] cloning repository https://github.com/Ocrap7/synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ocrap7/synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3e230ec1d30704830326496873edc0b0ba3ccac
[INFO] checking Ocrap7/synth against try#4e3d7541a523df82cea75064e44e60ae9a008bcb for pr-97427
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ocrap7/synth on toolchain 4e3d7541a523df82cea75064e44e60ae9a008bcb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ocrap7/synth
[INFO] finished tweaking git repo https://github.com/Ocrap7/synth
[INFO] tweaked toml for git repo https://github.com/Ocrap7/synth written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/Ocrap7/synth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2de76dae374c10f52a8e1c127deadd0cf0a8c2d8680cbd1c184b8a6e406b2885
[INFO] running `Command { std: "docker" "start" "-a" "2de76dae374c10f52a8e1c127deadd0cf0a8c2d8680cbd1c184b8a6e406b2885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2de76dae374c10f52a8e1c127deadd0cf0a8c2d8680cbd1c184b8a6e406b2885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de76dae374c10f52a8e1c127deadd0cf0a8c2d8680cbd1c184b8a6e406b2885", kill_on_drop: false }`
[INFO] [stdout] 2de76dae374c10f52a8e1c127deadd0cf0a8c2d8680cbd1c184b8a6e406b2885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5281fe15fa9d0a2564d675559ec970ce3ced888773afa00a298dd181e58b6a5a
[INFO] running `Command { std: "docker" "start" "-a" "5281fe15fa9d0a2564d675559ec970ce3ced888773afa00a298dd181e58b6a5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]    Compiling cpal v0.13.5
[INFO] [stderr]     Checking audio-core v0.2.0-alpha.3
[INFO] [stderr]     Checking rsor v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking audio v0.2.0-alpha.3
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking transpose v0.2.1
[INFO] [stderr]     Checking primal-check v0.3.1
[INFO] [stderr]     Checking rustfft v6.0.1
[INFO] [stderr]     Checking numeric-array v0.5.2
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking modulator v0.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking alsa v0.4.3
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking midir v0.7.0
[INFO] [stderr]     Checking alsa v0.6.0
[INFO] [stderr]     Checking fundsp v0.3.1
[INFO] [stderr]     Checking midi-control v0.2.0
[INFO] [stderr]     Checking synth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs::OpenOptions`
[INFO] [stdout]  --> src/oscillator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::OpenOptions,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Newtonian`, `ScalarGoalFollower`, `ScalarSpring`, `ShiftRegisterInterp`, `ShiftRegister`, `Wave`
[INFO] [stdout]  --> src/oscillator.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Newtonian, ScalarGoalFollower, ScalarSpring, ShiftRegister, ShiftRegisterInterp, Wave,
[INFO] [stdout]   |     ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ModulatorEnv`, `Modulator`
[INFO] [stdout]  --> src/oscillator.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use modulator::{Modulator, ModulatorEnv};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SampleFormat`, `StreamTrait`
[INFO] [stdout]   --> src/oscillator.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 |     traits::{DeviceTrait, StreamTrait},
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout] 13 |     Sample, SampleFormat, Stream, StreamConfig,
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs::OpenOptions`
[INFO] [stdout]  --> src/oscillator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::OpenOptions,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StreamTrait`
[INFO] [stdout]  --> src/synth.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     traits::{DeviceTrait, StreamTrait},
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]    --> src/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | use lazy_static::lazy_static;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Newtonian`, `ScalarGoalFollower`, `ScalarSpring`, `ShiftRegisterInterp`, `ShiftRegister`, `Wave`
[INFO] [stdout]  --> src/oscillator.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Newtonian, ScalarGoalFollower, ScalarSpring, ShiftRegister, ShiftRegisterInterp, Wave,
[INFO] [stdout]   |     ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ModulatorEnv`, `Modulator`
[INFO] [stdout]  --> src/oscillator.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use modulator::{Modulator, ModulatorEnv};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SampleFormat`, `StreamTrait`
[INFO] [stdout]   --> src/oscillator.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 |     traits::{DeviceTrait, StreamTrait},
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout] 13 |     Sample, SampleFormat, Stream, StreamConfig,
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StreamTrait`
[INFO] [stdout]  --> src/synth.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |     traits::{DeviceTrait, StreamTrait},
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]    --> src/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | use lazy_static::lazy_static;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     loop {}
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 126 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     loop {}
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 126 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:217:5
[INFO] [stdout]     |
[INFO] [stdout] 215 |     loop {}
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] 216 | 
[INFO] [stdout] 217 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:217:5
[INFO] [stdout]     |
[INFO] [stdout] 215 |     loop {}
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] 216 | 
[INFO] [stdout] 217 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `midir::MidiIO`
[INFO] [stdout]    --> src/main.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | use midir::MidiIO;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/oscillator.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             _ => 0.0,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `midir::MidiIO`
[INFO] [stdout]    --> src/main.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | use midir::MidiIO;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/oscillator.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             _ => 0.0,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channels`
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     let channels = config.channels as usize;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channels`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/synth.rs:74:41
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     MidiMessage::NoteOn(c, k) => {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/synth.rs:87:42
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     MidiMessage::NoteOff(c, k) => {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channels`
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     let channels = config.channels as usize;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channels`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/synth.rs:74:41
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     MidiMessage::NoteOn(c, k) => {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/synth.rs:87:42
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     MidiMessage::NoteOff(c, k) => {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_data`
[INFO] [stdout]    --> src/main.rs:234:4
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn write_data<T>(output: &mut [T], channels: usize, next_sample: &mut dyn FnMut() -> (f64, f64))
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sine`
[INFO] [stdout]   --> src/oscillator.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Sine,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Triangle`
[INFO] [stdout]   --> src/oscillator.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Triangle,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sawtooth`
[INFO] [stdout]   --> src/oscillator.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Sawtooth,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Square`
[INFO] [stdout]   --> src/oscillator.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `offset`
[INFO] [stdout]   --> src/oscillator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     offset: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `time`
[INFO] [stdout]   --> src/oscillator.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     time: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/oscillator.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(config: StreamConfig, shape: OscillatorShape, frequency: f32) -> Oscillator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `output`
[INFO] [stdout]   --> src/oscillator.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn output<T>(ss: Arc<Mutex<Box<Oscillator>>>, device: &cpal::Device) -> Stream
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `use_freq_mod`
[INFO] [stdout]   --> src/oscillator.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn use_freq_mod(&mut self, osc: Arc<Mutex<Box<Oscillator>>>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_volume`
[INFO] [stdout]   --> src/oscillator.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn set_volume(&mut self, volume: f32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_data`
[INFO] [stdout]    --> src/oscillator.rs:167:4
[INFO] [stdout]     |
[INFO] [stdout] 167 | fn write_data<T, SW>(output: &mut [T], channels: usize, sw: Arc<Mutex<Box<SW>>>)
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]   --> src/synth.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     sample_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]    --> src/synth.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     sample_rate: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_data`
[INFO] [stdout]    --> src/main.rs:234:4
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn write_data<T>(output: &mut [T], channels: usize, next_sample: &mut dyn FnMut() -> (f64, f64))
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sine`
[INFO] [stdout]   --> src/oscillator.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Sine,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Triangle`
[INFO] [stdout]   --> src/oscillator.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Triangle,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sawtooth`
[INFO] [stdout]   --> src/oscillator.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Sawtooth,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Square`
[INFO] [stdout]   --> src/oscillator.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `offset`
[INFO] [stdout]   --> src/oscillator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     offset: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `time`
[INFO] [stdout]   --> src/oscillator.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     time: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/oscillator.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(config: StreamConfig, shape: OscillatorShape, frequency: f32) -> Oscillator {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `output`
[INFO] [stdout]   --> src/oscillator.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn output<T>(ss: Arc<Mutex<Box<Oscillator>>>, device: &cpal::Device) -> Stream
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `use_freq_mod`
[INFO] [stdout]   --> src/oscillator.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn use_freq_mod(&mut self, osc: Arc<Mutex<Box<Oscillator>>>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_volume`
[INFO] [stdout]   --> src/oscillator.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn set_volume(&mut self, volume: f32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_data`
[INFO] [stdout]    --> src/oscillator.rs:167:4
[INFO] [stdout]     |
[INFO] [stdout] 167 | fn write_data<T, SW>(output: &mut [T], channels: usize, sw: Arc<Mutex<Box<SW>>>)
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]   --> src/synth.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     sample_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]    --> src/synth.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     sample_rate: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             sender.send(message);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             sender.send(message);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.02s
[INFO] running `Command { std: "docker" "inspect" "5281fe15fa9d0a2564d675559ec970ce3ced888773afa00a298dd181e58b6a5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5281fe15fa9d0a2564d675559ec970ce3ced888773afa00a298dd181e58b6a5a", kill_on_drop: false }`
[INFO] [stdout] 5281fe15fa9d0a2564d675559ec970ce3ced888773afa00a298dd181e58b6a5a