[INFO] cloning repository https://github.com/jddubois/organsynth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jddubois/organsynth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjddubois%2Forgansynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjddubois%2Forgansynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 080dc59679df3c4e4f28ee6faab4962554dfec1f
[INFO] checking jddubois/organsynth against master#01706e1a34c87656fcbfce198608f4cd2ac6461a for pr-135272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjddubois%2Forgansynth" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jddubois/organsynth on toolchain 01706e1a34c87656fcbfce198608f4cd2ac6461a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jddubois/organsynth
[INFO] finished tweaking git repo https://github.com/jddubois/organsynth
[INFO] tweaked toml for git repo https://github.com/jddubois/organsynth written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jddubois/organsynth 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" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jack v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89e258db2bfe7d983a8bb5b9f976135bdb7db78e42199e360d3b9270dfe89826
[INFO] running `Command { std: "docker" "start" "-a" "89e258db2bfe7d983a8bb5b9f976135bdb7db78e42199e360d3b9270dfe89826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89e258db2bfe7d983a8bb5b9f976135bdb7db78e42199e360d3b9270dfe89826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e258db2bfe7d983a8bb5b9f976135bdb7db78e42199e360d3b9270dfe89826", kill_on_drop: false }`
[INFO] [stdout] 89e258db2bfe7d983a8bb5b9f976135bdb7db78e42199e360d3b9270dfe89826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0efd37ecba275d1ba39132610e617138b9ab4b964e5a9fa9ced248d0e86d9436
[INFO] running `Command { std: "docker" "start" "-a" "0efd37ecba275d1ba39132610e617138b9ab4b964e5a9fa9ced248d0e86d9436", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling jack v0.13.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]    Compiling jack-sys v0.5.1
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.91
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking alsa v0.9.1
[INFO] [stderr]     Checking midir v0.10.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking organsynth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/jack_handler.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn process(&mut self, c: &Client, ps: &ProcessScope) -> jack::Control {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/jack_handler.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn process(&mut self, c: &Client, ps: &ProcessScope) -> jack::Control {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frequency`
[INFO] [stdout]    --> src/oscillator.rs:106:34
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn new(sample_rate: f32, frequency: f32) -> Self {
[INFO] [stdout]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frequency`
[INFO] [stdout]    --> src/oscillator.rs:106:34
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn new(sample_rate: f32, frequency: f32) -> Self {
[INFO] [stdout]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fed_back`
[INFO] [stdout]   --> src/reverb.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let fed_back = delayed * self.feedback_gain;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fed_back`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp`
[INFO] [stdout]    --> src/reverb.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let temp = delayed + (self.gain * input);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_temp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fed_back`
[INFO] [stdout]   --> src/reverb.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let fed_back = delayed * self.feedback_gain;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fed_back`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp`
[INFO] [stdout]    --> src/reverb.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let temp = delayed + (self.gain * input);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_temp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `EnvelopeState` is more private than the item `Envelope::state`
[INFO] [stdout]   --> src/oscillator.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub state: EnvelopeState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ field `Envelope::state` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `EnvelopeState` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/oscillator.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | enum EnvelopeState {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Decay` and `Idle` are never constructed
[INFO] [stdout]    --> src/oscillator.rs:97:5
[INFO] [stdout]     |
[INFO] [stdout] 95  | enum EnvelopeState {
[INFO] [stdout]     |      ------------- variants in this enum
[INFO] [stdout] 96  |     Attack,
[INFO] [stdout] 97  |     Decay,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     Idle,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buffer`, `write_pos`, and `delay_samples` are never read
[INFO] [stdout]   --> src/reverb.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct DelayLine {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 11 |     buffer: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 12 |     write_pos: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     delay_samples: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `EnvelopeState` is more private than the item `Envelope::state`
[INFO] [stdout]   --> src/oscillator.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub state: EnvelopeState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ field `Envelope::state` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `EnvelopeState` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/oscillator.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | enum EnvelopeState {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process` is never used
[INFO] [stdout]   --> src/reverb.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DelayLine {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `delay_line` and `feedback_gain` are never read
[INFO] [stdout]   --> src/reverb.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct CombFilter {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 41 |     delay_line: DelayLine,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 42 |     feedback_gain: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `process` are never used
[INFO] [stdout]   --> src/reverb.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl CombFilter {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 46 |     fn new(max_delay_samples: usize, delay_samples: usize, feedback_gain: f32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Decay` and `Idle` are never constructed
[INFO] [stdout]    --> src/oscillator.rs:97:5
[INFO] [stdout]     |
[INFO] [stdout] 95  | enum EnvelopeState {
[INFO] [stdout]     |      ------------- variants in this enum
[INFO] [stdout] 96  |     Attack,
[INFO] [stdout] 97  |     Decay,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     Idle,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `delay_line` and `gain` are never read
[INFO] [stdout]   --> src/reverb.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct AllpassFilter {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 85 |     delay_line: DelayLine,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 86 |     gain: f32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buffer`, `write_pos`, and `delay_samples` are never read
[INFO] [stdout]   --> src/reverb.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct DelayLine {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 11 |     buffer: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 12 |     write_pos: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     delay_samples: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process` is never used
[INFO] [stdout]   --> src/reverb.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DelayLine {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `process`, and `last_output` are never used
[INFO] [stdout]    --> src/reverb.rs:90:8
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl AllpassFilter {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 90  |     fn new(max_delay_samples: usize, delay_samples: usize, gain: f32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 97  |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn last_output(&self) -> f32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comb_filters`, `allpass_filters`, and `dry_wet` are never read
[INFO] [stdout]    --> src/reverb.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub struct Reverb {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     comb_filters: Vec<CombFilter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 145 |     allpass_filters: Vec<AllpassFilter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 146 |     dry_wet: f32,         // 0.0 = fully dry, 1.0 = fully wet
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process_sample` is never used
[INFO] [stdout]    --> src/reverb.rs:185:12
[INFO] [stdout]     |
[INFO] [stdout] 149 | impl Reverb {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 185 |     pub fn process_sample(&mut self, input: f32) -> f32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reverb` is never read
[INFO] [stdout]   --> src/synth.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Synth {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     reverb: Reverb,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Sine`, `Square`, and `Sawtooth` are never constructed
[INFO] [stdout]  --> src/waveform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Waveform {
[INFO] [stdout]   |          -------- variants in this enum
[INFO] [stdout] 3 |     Sine,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Square,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     Sawtooth,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Waveform` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_triangle_sample` is never used
[INFO] [stdout]   --> src/waveform.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Waveform {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn generate_triangle_sample(phase: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `delay_line` and `feedback_gain` are never read
[INFO] [stdout]   --> src/reverb.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct CombFilter {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 41 |     delay_line: DelayLine,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 42 |     feedback_gain: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `process` are never used
[INFO] [stdout]   --> src/reverb.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl CombFilter {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 46 |     fn new(max_delay_samples: usize, delay_samples: usize, feedback_gain: f32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `delay_line` and `gain` are never read
[INFO] [stdout]   --> src/reverb.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct AllpassFilter {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 85 |     delay_line: DelayLine,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 86 |     gain: f32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `process`, and `last_output` are never used
[INFO] [stdout]    --> src/reverb.rs:90:8
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl AllpassFilter {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 90  |     fn new(max_delay_samples: usize, delay_samples: usize, gain: f32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 97  |     fn process(&mut self, input: f32) -> f32 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn last_output(&self) -> f32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comb_filters`, `allpass_filters`, and `dry_wet` are never read
[INFO] [stdout]    --> src/reverb.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub struct Reverb {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     comb_filters: Vec<CombFilter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 145 |     allpass_filters: Vec<AllpassFilter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 146 |     dry_wet: f32,         // 0.0 = fully dry, 1.0 = fully wet
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process_sample` is never used
[INFO] [stdout]    --> src/reverb.rs:185:12
[INFO] [stdout]     |
[INFO] [stdout] 149 | impl Reverb {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 185 |     pub fn process_sample(&mut self, input: f32) -> f32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reverb` is never read
[INFO] [stdout]   --> src/synth.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Synth {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     reverb: Reverb,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Sine`, `Square`, and `Sawtooth` are never constructed
[INFO] [stdout]  --> src/waveform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Waveform {
[INFO] [stdout]   |          -------- variants in this enum
[INFO] [stdout] 3 |     Sine,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Square,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     Sawtooth,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Waveform` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_triangle_sample` is never used
[INFO] [stdout]   --> src/waveform.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Waveform {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn generate_triangle_sample(phase: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.48s
[INFO] running `Command { std: "docker" "inspect" "0efd37ecba275d1ba39132610e617138b9ab4b964e5a9fa9ced248d0e86d9436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efd37ecba275d1ba39132610e617138b9ab4b964e5a9fa9ced248d0e86d9436", kill_on_drop: false }`
[INFO] [stdout] 0efd37ecba275d1ba39132610e617138b9ab4b964e5a9fa9ced248d0e86d9436
