[INFO] cloning repository https://github.com/Eyon42/rust_audio_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Eyon42/rust_audio_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEyon42%2Frust_audio_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEyon42%2Frust_audio_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b4c67493ac4a729f1df5f1e005c81f16d810588
[INFO] checking Eyon42/rust_audio_playground against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEyon42%2Frust_audio_playground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Eyon42/rust_audio_playground on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Eyon42/rust_audio_playground
[INFO] finished tweaking git repo https://github.com/Eyon42/rust_audio_playground
[INFO] tweaked toml for git repo https://github.com/Eyon42/rust_audio_playground written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Eyon42/rust_audio_playground 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jack-sys v0.5.1
[INFO] [stderr]   Downloaded ringbuf v0.3.3
[INFO] [stderr]   Downloaded autopilot v0.4.0
[INFO] [stderr]   Downloaded jack v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc23f1afa0e6de9708e066622c15f4741d501313041842fc54237a321bb8415d
[INFO] running `Command { std: "docker" "start" "-a" "cc23f1afa0e6de9708e066622c15f4741d501313041842fc54237a321bb8415d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc23f1afa0e6de9708e066622c15f4741d501313041842fc54237a321bb8415d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc23f1afa0e6de9708e066622c15f4741d501313041842fc54237a321bb8415d", kill_on_drop: false }`
[INFO] [stdout] cc23f1afa0e6de9708e066622c15f4741d501313041842fc54237a321bb8415d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6235b8e2023b4c724702230c1fa2c938688cc6a104dd98272d8c6550495b008
[INFO] running `Command { std: "docker" "start" "-a" "b6235b8e2023b4c724702230c1fa2c938688cc6a104dd98272d8c6550495b008", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling jack-sys v0.5.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling jack v0.11.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking anstream v0.6.12
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking lock_api v0.4.11
[INFO] [stderr]    Compiling syn v2.0.49
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]    Compiling autopilot v0.4.0
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking clap_builder v4.5.1
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking ringbuf v0.3.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking alsa v0.7.1
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]    Compiling clap_derive v4.5.0
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking clap v4.5.1
[INFO] [stderr]     Checking audio_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/example.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/freq.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let step = (sample_rate as usize / 20); // 20 hz as minimal detection
[INFO] [stdout]    |                ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 22 -     let step = (sample_rate as usize / 20); // 20 hz as minimal detection
[INFO] [stdout] 22 +     let step = sample_rate as usize / 20; // 20 hz as minimal detection
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/example.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/mouse.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     for i in 0..10000 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libs::wav::BitDepth`
[INFO] [stdout]  --> src/osc.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use libs::wav::BitDepth;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/osc.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let raw_f = log_map(220.0, 440.0, (1.0 - ny as f32));
[INFO] [stdout]    |                                           ^               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         let raw_f = log_map(220.0, 440.0, (1.0 - ny as f32));
[INFO] [stdout] 61 +         let raw_f = log_map(220.0, 440.0, 1.0 - ny as f32);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libs::wav::BitDepth`
[INFO] [stdout]  --> src/osc.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use libs::wav::BitDepth;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/osc.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let raw_f = log_map(220.0, 440.0, (1.0 - ny as f32));
[INFO] [stdout]    |                                           ^               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         let raw_f = log_map(220.0, 440.0, (1.0 - ny as f32));
[INFO] [stdout] 61 +         let raw_f = log_map(220.0, 440.0, 1.0 - ny as f32);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/mouse.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     for i in 0..10000 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/libs/amdf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/libs/amdf.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return (mins[1] - mins[0]);
[INFO] [stdout]    |            ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     return (mins[1] - mins[0]);
[INFO] [stdout] 30 +     return mins[1] - mins[0];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/freq.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let step = (sample_rate as usize / 20); // 20 hz as minimal detection
[INFO] [stdout]    |                ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 22 -     let step = (sample_rate as usize / 20); // 20 hz as minimal detection
[INFO] [stdout] 22 +     let step = sample_rate as usize / 20; // 20 hz as minimal detection
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/libs/wav.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{Error, Read, Seek, Write},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_notes` is never used
[INFO] [stdout]  --> src/libs/notation.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn gen_notes() -> Vec<f64> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_to_freq` is never used
[INFO] [stdout]   --> src/libs/notation.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn note_to_freq(note: &str) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `freq_to_note` is never used
[INFO] [stdout]   --> src/libs/notation.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn freq_to_note(freq: f64) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fit_to_scale` is never used
[INFO] [stdout]   --> src/libs/notation.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn fit_to_scale(scale: &Vec<f64>, note_freq: f64) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `U8` and `U32` are never constructed
[INFO] [stdout]   --> src/libs/wav.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum BitDepth {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 52 |     U8(i8),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     U16(i16),
[INFO] [stdout] 54 |     U32(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BitDepth` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `read` is never used
[INFO] [stdout]    --> src/libs/wav.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn read(path: &Path) -> Result<WavFile, Error> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `U8` and `U32` are never constructed
[INFO] [stdout]   --> src/libs/wav.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum BitDepth {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 52 |     U8(i8),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     U16(i16),
[INFO] [stdout] 54 |     U32(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BitDepth` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `read` is never used
[INFO] [stdout]    --> src/libs/wav.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn read(path: &Path) -> Result<WavFile, Error> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_to_freq` is never used
[INFO] [stdout]   --> src/libs/notation.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn note_to_freq(note: &str) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `size`, and `block_type` are never read
[INFO] [stdout]   --> src/libs/wav.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     block_type: Fourcc,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/libs/wav.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 19 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 21 |     pub fmt_tag: u16,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 22 |     pub channels: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 23 |     pub sample_rate: u32,
[INFO] [stdout] 24 |     pub byte_rate: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 25 |     pub block_align: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub bits_per_sample: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `size` are never read
[INFO] [stdout]   --> src/libs/wav.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 30 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `riff_hdr` and `data_hdr` are never read
[INFO] [stdout]   --> src/libs/wav.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 35 |     pub riff_hdr: RiffHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 36 |     pub fmt_ck: FmtHdr,
[INFO] [stdout] 37 |     pub data_hdr: DataHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/libs/wav.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_notes` is never used
[INFO] [stdout]  --> src/libs/notation.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn gen_notes() -> Vec<f64> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_to_freq` is never used
[INFO] [stdout]   --> src/libs/notation.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn note_to_freq(note: &str) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `freq_to_note` is never used
[INFO] [stdout]   --> src/libs/notation.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn freq_to_note(freq: f64) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fit_to_scale` is never used
[INFO] [stdout]   --> src/libs/notation.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn fit_to_scale(scale: &Vec<f64>, note_freq: f64) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `size`, and `block_type` are never read
[INFO] [stdout]   --> src/libs/wav.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     block_type: Fourcc,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/libs/wav.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 19 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 21 |     pub fmt_tag: u16,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 22 |     pub channels: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 23 |     pub sample_rate: u32,
[INFO] [stdout] 24 |     pub byte_rate: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 25 |     pub block_align: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub bits_per_sample: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `size` are never read
[INFO] [stdout]   --> src/libs/wav.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 30 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `riff_hdr` and `data_hdr` are never read
[INFO] [stdout]   --> src/libs/wav.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 35 |     pub riff_hdr: RiffHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 36 |     pub fmt_ck: FmtHdr,
[INFO] [stdout] 37 |     pub data_hdr: DataHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/libs/wav.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_osc` is never used
[INFO] [stdout]   --> src/osc.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn sine_osc(phase: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_osc` is never used
[INFO] [stdout]    --> src/osc.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn square_osc(phase: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_osc` is never used
[INFO] [stdout]    --> src/osc.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn saw_osc(phase: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lin_map` is never used
[INFO] [stdout]    --> src/osc.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn lin_map(min: f32, max: f32, v: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_to_freq` is never used
[INFO] [stdout]   --> src/libs/notation.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn note_to_freq(note: &str) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `freq_to_note` is never used
[INFO] [stdout]   --> src/libs/notation.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn freq_to_note(freq: f64) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Fourcc` is never used
[INFO] [stdout]   --> src/libs/wav.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Fourcc = [u8; 4];
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RiffHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FmtHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavFile` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct WavFile {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavParams` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct WavParams {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `U8`, `U16`, and `U32` are never constructed
[INFO] [stdout]   --> src/libs/wav.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum BitDepth {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 52 |     U8(i8),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     U16(i16),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 54 |     U32(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BitDepth` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `write`, and `read` are never used
[INFO] [stdout]    --> src/libs/wav.rs:81:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 81  |     pub fn new(params: WavParams, data: Vec<BitDepth>) -> WavFile {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn read(path: &Path) -> Result<WavFile, Error> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `size`, and `block_type` are never read
[INFO] [stdout]   --> src/libs/wav.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     block_type: Fourcc,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/libs/wav.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 19 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 21 |     pub fmt_tag: u16,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 22 |     pub channels: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 23 |     pub sample_rate: u32,
[INFO] [stdout] 24 |     pub byte_rate: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 25 |     pub block_align: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub bits_per_sample: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `size` are never read
[INFO] [stdout]   --> src/libs/wav.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 30 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `riff_hdr` and `data_hdr` are never read
[INFO] [stdout]   --> src/libs/wav.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 35 |     pub riff_hdr: RiffHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 36 |     pub fmt_ck: FmtHdr,
[INFO] [stdout] 37 |     pub data_hdr: DataHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/libs/wav.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `size`, and `block_type` are never read
[INFO] [stdout]   --> src/libs/wav.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     block_type: Fourcc,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/libs/wav.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 19 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 21 |     pub fmt_tag: u16,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 22 |     pub channels: u16,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 23 |     pub sample_rate: u32,
[INFO] [stdout] 24 |     pub byte_rate: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 25 |     pub block_align: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 26 |     pub bits_per_sample: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `size` are never read
[INFO] [stdout]   --> src/libs/wav.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 30 |     id: Fourcc,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     pub size: u32,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `riff_hdr` and `data_hdr` are never read
[INFO] [stdout]   --> src/libs/wav.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 35 |     pub riff_hdr: RiffHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 36 |     pub fmt_ck: FmtHdr,
[INFO] [stdout] 37 |     pub data_hdr: DataHdr,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/libs/wav.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/libs/wav.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Err(e) => return Err(invalid_file_error),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_osc` is never used
[INFO] [stdout]   --> src/osc.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn sine_osc(phase: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_osc` is never used
[INFO] [stdout]    --> src/osc.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn square_osc(phase: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_osc` is never used
[INFO] [stdout]    --> src/osc.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn saw_osc(phase: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lin_map` is never used
[INFO] [stdout]    --> src/osc.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn lin_map(min: f32, max: f32, v: f32) -> f32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `amdf` is never used
[INFO] [stdout]  --> src/libs/amdf.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn amdf(sample: Vec<f64>) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave` is never used
[INFO] [stdout]  --> src/libs/sampling.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sine_wave(
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sine_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sine_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `saw_wave_truncated` is never used
[INFO] [stdout]   --> src/libs/sampling.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn saw_wave_truncated(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Fourcc` is never used
[INFO] [stdout]   --> src/libs/wav.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Fourcc = [u8; 4];
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RiffHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RiffHdr {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FmtHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct FmtHdr {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DataHdr {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavHdr` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct WavHdr {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavFile` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct WavFile {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WavParams` is never constructed
[INFO] [stdout]   --> src/libs/wav.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct WavParams {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `U8`, `U16`, and `U32` are never constructed
[INFO] [stdout]   --> src/libs/wav.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum BitDepth {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 52 |     U8(i8),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     U16(i16),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 54 |     U32(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BitDepth` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `write`, and `read` are never used
[INFO] [stdout]    --> src/libs/wav.rs:81:12
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl WavFile {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 81  |     pub fn new(params: WavParams, data: Vec<BitDepth>) -> WavFile {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn write(self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn read(path: &Path) -> Result<WavFile, Error> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.25s
[INFO] running `Command { std: "docker" "inspect" "b6235b8e2023b4c724702230c1fa2c938688cc6a104dd98272d8c6550495b008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6235b8e2023b4c724702230c1fa2c938688cc6a104dd98272d8c6550495b008", kill_on_drop: false }`
[INFO] [stdout] b6235b8e2023b4c724702230c1fa2c938688cc6a104dd98272d8c6550495b008