Dec 18 01:13:12.643 INFO checking donniemattingly/fingerprint against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 01:13:12.643 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/donniemattingly/fingerprint:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 01:13:13.062 INFO [stdout] 6fb53fdfbc19be1cf917dc9ee7cbca94a43beca61664e98cd2a833d09462641a
Dec 18 01:13:13.067 INFO running `"docker" "start" "-a" "6fb53fdfbc19be1cf917dc9ee7cbca94a43beca61664e98cd2a833d09462641a"`
Dec 18 01:13:14.574 INFO [stderr]    Compiling rayon-core v1.4.0
Dec 18 01:13:14.586 INFO [stderr]     Checking hound v3.3.1
Dec 18 01:13:14.587 INFO [stderr]    Compiling miniz-sys v0.1.10
Dec 18 01:13:14.589 INFO [stderr]     Checking log v0.4.1
Dec 18 01:13:14.590 INFO [stderr]     Checking threadpool v1.7.1
Dec 18 01:13:14.596 INFO [stderr]     Checking alga v0.5.3
Dec 18 01:13:14.597 INFO [stderr]     Checking rustfft v2.0.0
Dec 18 01:13:14.597 INFO [stderr]     Checking serde_yaml v0.7.3
Dec 18 01:13:16.505 INFO [stderr]     Checking serde-value v0.5.1
Dec 18 01:13:17.057 INFO [stderr]     Checking nalgebra v0.5.1
Dec 18 01:13:18.320 INFO [stderr]     Checking chrono v0.4.0
Dec 18 01:13:18.550 INFO [stderr]     Checking streaming-stats v0.1.28
Dec 18 01:13:19.645 INFO [stderr]     Checking stopwatch v0.0.7
Dec 18 01:13:21.713 INFO [stderr]     Checking rayon v1.0.0
Dec 18 01:13:24.614 INFO [stderr]     Checking flate2 v1.0.1
Dec 18 01:13:28.226 INFO [stderr]     Checking log4rs v0.8.0
Dec 18 01:13:30.553 INFO [stderr]     Checking nalgebra v0.13.1
Dec 18 01:13:33.641 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 18 01:13:35.925 INFO [stderr]     Checking image v0.18.0
Dec 18 01:13:39.172 INFO [stderr]     Checking apodize v0.2.0
Dec 18 01:14:03.442 INFO [stderr]     Checking fingerprint v0.1.0 (/opt/crater/workdir)
Dec 18 01:14:05.916 INFO [stderr] warning: unused import: `self::stopwatch::Stopwatch`
Dec 18 01:14:05.916 INFO [stderr]  --> src/lib.rs:8:5
Dec 18 01:14:05.917 INFO [stderr]   |
Dec 18 01:14:05.920 INFO [stderr] 8 | use self::stopwatch::Stopwatch;
Dec 18 01:14:05.920 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.920 INFO [stderr]   |
Dec 18 01:14:05.921 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 01:14:05.921 INFO [stderr] 
Dec 18 01:14:05.921 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 01:14:05.921 INFO [stderr]   --> src/lib.rs:14:5
Dec 18 01:14:05.921 INFO [stderr]    |
Dec 18 01:14:05.921 INFO [stderr] 14 | use std::collections::HashMap;
Dec 18 01:14:05.921 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.921 INFO [stderr] 
Dec 18 01:14:05.921 INFO [stderr] warning: unused import: `multimap::MultiMap`
Dec 18 01:14:05.921 INFO [stderr]   --> src/lib.rs:18:5
Dec 18 01:14:05.921 INFO [stderr]    |
Dec 18 01:14:05.921 INFO [stderr] 18 | use multimap::MultiMap;
Dec 18 01:14:05.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.924 INFO [stderr] 
Dec 18 01:14:05.924 INFO [stderr] warning: unused import: `std::path::PathBuf`
Dec 18 01:14:05.924 INFO [stderr]    --> src/spectrogram.rs:234:5
Dec 18 01:14:05.924 INFO [stderr]     |
Dec 18 01:14:05.924 INFO [stderr] 234 | use std::path::PathBuf;
Dec 18 01:14:05.924 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.924 INFO [stderr] 
Dec 18 01:14:05.924 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 01:14:05.924 INFO [stderr]  --> src/hash.rs:5:5
Dec 18 01:14:05.924 INFO [stderr]   |
Dec 18 01:14:05.924 INFO [stderr] 5 | use std::collections::HashSet;
Dec 18 01:14:05.924 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.924 INFO [stderr] 
Dec 18 01:14:05.924 INFO [stderr] warning: unused import: `std::path::PathBuf`
Dec 18 01:14:05.924 INFO [stderr]    --> src/hash.rs:197:5
Dec 18 01:14:05.924 INFO [stderr]     |
Dec 18 01:14:05.924 INFO [stderr] 197 | use std::path::PathBuf;
Dec 18 01:14:05.924 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.924 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 01:14:05.936 INFO [stderr]   --> src/main.rs:14:5
Dec 18 01:14:05.936 INFO [stderr]    |
Dec 18 01:14:05.936 INFO [stderr] 14 | use std::collections::HashMap;
Dec 18 01:14:05.936 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.936 INFO [stderr]    |
Dec 18 01:14:05.936 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unused import: `std::path::PathBuf`
Dec 18 01:14:05.936 INFO [stderr]    --> src/spectrogram.rs:234:5
Dec 18 01:14:05.936 INFO [stderr]     |
Dec 18 01:14:05.936 INFO [stderr] 234 | use std::path::PathBuf;
Dec 18 01:14:05.936 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 01:14:05.936 INFO [stderr]  --> src/hash.rs:5:5
Dec 18 01:14:05.936 INFO [stderr]   |
Dec 18 01:14:05.936 INFO [stderr] 5 | use std::collections::HashSet;
Dec 18 01:14:05.936 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unused import: `std::path::PathBuf`
Dec 18 01:14:05.936 INFO [stderr]    --> src/hash.rs:197:5
Dec 18 01:14:05.936 INFO [stderr]     |
Dec 18 01:14:05.936 INFO [stderr] 197 | use std::path::PathBuf;
Dec 18 01:14:05.936 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 01:14:05.936 INFO [stderr]   --> src/main.rs:81:12
Dec 18 01:14:05.936 INFO [stderr]    |
Dec 18 01:14:05.936 INFO [stderr] 81 |         if (diff != cur) {
Dec 18 01:14:05.936 INFO [stderr]    |            ^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 01:14:05.936 INFO [stderr]    |
Dec 18 01:14:05.936 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 01:14:05.936 INFO [stderr]   --> src/main.rs:82:16
Dec 18 01:14:05.936 INFO [stderr]    |
Dec 18 01:14:05.936 INFO [stderr] 82 |             if (cur_count > 10) {
Dec 18 01:14:05.936 INFO [stderr]    |                ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 01:14:05.936 INFO [stderr] 
Dec 18 01:14:05.936 INFO [stderr] warning: unused import: `self::stopwatch::Stopwatch`
Dec 18 01:14:05.936 INFO [stderr]  --> src/lib.rs:8:5
Dec 18 01:14:05.936 INFO [stderr]   |
Dec 18 01:14:05.936 INFO [stderr] 8 | use self::stopwatch::Stopwatch;
Dec 18 01:14:05.936 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.936 INFO [stderr]   |
Dec 18 01:14:05.936 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 01:14:05.937 INFO [stderr] 
Dec 18 01:14:05.937 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 01:14:05.937 INFO [stderr]   --> src/lib.rs:14:5
Dec 18 01:14:05.937 INFO [stderr]    |
Dec 18 01:14:05.937 INFO [stderr] 14 | use std::collections::HashMap;
Dec 18 01:14:05.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.937 INFO [stderr] 
Dec 18 01:14:05.937 INFO [stderr] warning: unused import: `multimap::MultiMap`
Dec 18 01:14:05.937 INFO [stderr]   --> src/lib.rs:18:5
Dec 18 01:14:05.937 INFO [stderr]    |
Dec 18 01:14:05.937 INFO [stderr] 18 | use multimap::MultiMap;
Dec 18 01:14:05.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.937 INFO [stderr] 
Dec 18 01:14:05.937 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 01:14:05.937 INFO [stderr]  --> src/hash.rs:5:5
Dec 18 01:14:05.937 INFO [stderr]   |
Dec 18 01:14:05.937 INFO [stderr] 5 | use std::collections::HashSet;
Dec 18 01:14:05.937 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:05.937 INFO [stderr] 
Dec 18 01:14:06.030 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 01:14:06.030 INFO [stderr]   --> src/main.rs:14:5
Dec 18 01:14:06.030 INFO [stderr]    |
Dec 18 01:14:06.030 INFO [stderr] 14 | use std::collections::HashMap;
Dec 18 01:14:06.030 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.030 INFO [stderr]    |
Dec 18 01:14:06.030 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:14:06.030 INFO [stderr] 
Dec 18 01:14:06.030 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 01:14:06.030 INFO [stderr]  --> src/hash.rs:5:5
Dec 18 01:14:06.030 INFO [stderr]   |
Dec 18 01:14:06.030 INFO [stderr] 5 | use std::collections::HashSet;
Dec 18 01:14:06.030 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.030 INFO [stderr] 
Dec 18 01:14:06.030 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 01:14:06.030 INFO [stderr]   --> src/main.rs:81:12
Dec 18 01:14:06.030 INFO [stderr]    |
Dec 18 01:14:06.030 INFO [stderr] 81 |         if (diff != cur) {
Dec 18 01:14:06.030 INFO [stderr]    |            ^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 01:14:06.030 INFO [stderr]    |
Dec 18 01:14:06.030 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 01:14:06.030 INFO [stderr] 
Dec 18 01:14:06.030 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 01:14:06.030 INFO [stderr]   --> src/main.rs:82:16
Dec 18 01:14:06.030 INFO [stderr]    |
Dec 18 01:14:06.030 INFO [stderr] 82 |             if (cur_count > 10) {
Dec 18 01:14:06.030 INFO [stderr]    |                ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 01:14:06.030 INFO [stderr] 
Dec 18 01:14:06.139 INFO [stderr] warning: unused variable: `peaks_len`
Dec 18 01:14:06.139 INFO [stderr]    --> src/hash.rs:116:9
Dec 18 01:14:06.139 INFO [stderr]     |
Dec 18 01:14:06.139 INFO [stderr] 116 |     let peaks_len = peaks.len();
Dec 18 01:14:06.139 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_peaks_len` instead
Dec 18 01:14:06.139 INFO [stderr]     |
Dec 18 01:14:06.139 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 01:14:06.139 INFO [stderr] 
Dec 18 01:14:06.139 INFO [stderr] warning: unused variable: `peak`
Dec 18 01:14:06.139 INFO [stderr]    --> src/hash.rs:126:13
Dec 18 01:14:06.139 INFO [stderr]     |
Dec 18 01:14:06.139 INFO [stderr] 126 |     for (i, peak) in peaks.iter().enumerate() {
Dec 18 01:14:06.139 INFO [stderr]     |             ^^^^ help: consider using `_peak` instead
Dec 18 01:14:06.139 INFO [stderr] 
Dec 18 01:14:06.139 INFO [stderr] warning: unused variable: `y`
Dec 18 01:14:06.139 INFO [stderr]    --> src/hash.rs:162:9
Dec 18 01:14:06.139 INFO [stderr]     |
Dec 18 01:14:06.139 INFO [stderr] 162 |     let y = rand::random::<f64>();
Dec 18 01:14:06.139 INFO [stderr]     |         ^ help: consider using `_y` instead
Dec 18 01:14:06.139 INFO [stderr] 
Dec 18 01:14:06.139 INFO [stderr] warning: unused variable: `path`
Dec 18 01:14:06.139 INFO [stderr]   --> src/lib.rs:53:39
Dec 18 01:14:06.139 INFO [stderr]    |
Dec 18 01:14:06.139 INFO [stderr] 53 | pub extern "C" fn rust_compute_hashes(path: *const c_char) -> int32_t {
Dec 18 01:14:06.139 INFO [stderr]    |                                       ^^^^ help: consider using `_path` instead
Dec 18 01:14:06.139 INFO [stderr] 
Dec 18 01:14:06.160 INFO [stderr] warning: unused variable: `peaks_len`
Dec 18 01:14:06.160 INFO [stderr]    --> src/hash.rs:116:9
Dec 18 01:14:06.160 INFO [stderr]     |
Dec 18 01:14:06.160 INFO [stderr] 116 |     let peaks_len = peaks.len();
Dec 18 01:14:06.160 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_peaks_len` instead
Dec 18 01:14:06.160 INFO [stderr]     |
Dec 18 01:14:06.160 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 01:14:06.160 INFO [stderr] 
Dec 18 01:14:06.160 INFO [stderr] warning: unused variable: `peak`
Dec 18 01:14:06.160 INFO [stderr]    --> src/hash.rs:126:13
Dec 18 01:14:06.160 INFO [stderr]     |
Dec 18 01:14:06.160 INFO [stderr] 126 |     for (i, peak) in peaks.iter().enumerate() {
Dec 18 01:14:06.160 INFO [stderr]     |             ^^^^ help: consider using `_peak` instead
Dec 18 01:14:06.160 INFO [stderr] 
Dec 18 01:14:06.160 INFO [stderr] warning: unused variable: `y`
Dec 18 01:14:06.161 INFO [stderr]    --> src/hash.rs:162:9
Dec 18 01:14:06.161 INFO [stderr]     |
Dec 18 01:14:06.161 INFO [stderr] 162 |     let y = rand::random::<f64>();
Dec 18 01:14:06.161 INFO [stderr]     |         ^ help: consider using `_y` instead
Dec 18 01:14:06.161 INFO [stderr] 
Dec 18 01:14:06.161 INFO [stderr] warning: unused variable: `path`
Dec 18 01:14:06.161 INFO [stderr]   --> src/lib.rs:53:39
Dec 18 01:14:06.161 INFO [stderr]    |
Dec 18 01:14:06.161 INFO [stderr] 53 | pub extern "C" fn rust_compute_hashes(path: *const c_char) -> int32_t {
Dec 18 01:14:06.161 INFO [stderr]    |                                       ^^^^ help: consider using `_path` instead
Dec 18 01:14:06.161 INFO [stderr] 
Dec 18 01:14:06.164 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.164 INFO [stderr]   --> src/spectrogram.rs:62:13
Dec 18 01:14:06.164 INFO [stderr]    |
Dec 18 01:14:06.164 INFO [stderr] 62 |         let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.164 INFO [stderr]    |             ----^^
Dec 18 01:14:06.164 INFO [stderr]    |             |
Dec 18 01:14:06.164 INFO [stderr]    |             help: remove this `mut`
Dec 18 01:14:06.164 INFO [stderr]    |
Dec 18 01:14:06.164 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 01:14:06.164 INFO [stderr] 
Dec 18 01:14:06.168 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.168 INFO [stderr]   --> src/spectrogram.rs:62:13
Dec 18 01:14:06.168 INFO [stderr]    |
Dec 18 01:14:06.168 INFO [stderr] 62 |         let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.168 INFO [stderr]    |             ----^^
Dec 18 01:14:06.168 INFO [stderr]    |             |
Dec 18 01:14:06.168 INFO [stderr]    |             help: remove this `mut`
Dec 18 01:14:06.168 INFO [stderr]    |
Dec 18 01:14:06.168 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 01:14:06.168 INFO [stderr] 
Dec 18 01:14:06.175 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.175 INFO [stderr]    --> src/spectrogram.rs:109:9
Dec 18 01:14:06.175 INFO [stderr]     |
Dec 18 01:14:06.175 INFO [stderr] 109 |     let mut new_spec = spectrum.split_off(half_index);
Dec 18 01:14:06.175 INFO [stderr]     |         ----^^^^^^^^
Dec 18 01:14:06.175 INFO [stderr]     |         |
Dec 18 01:14:06.175 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.175 INFO [stderr] 
Dec 18 01:14:06.175 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.175 INFO [stderr]    --> src/spectrogram.rs:109:9
Dec 18 01:14:06.175 INFO [stderr]     |
Dec 18 01:14:06.175 INFO [stderr] 109 |     let mut new_spec = spectrum.split_off(half_index);
Dec 18 01:14:06.176 INFO [stderr]     |         ----^^^^^^^^
Dec 18 01:14:06.176 INFO [stderr]     |         |
Dec 18 01:14:06.176 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.176 INFO [stderr] 
Dec 18 01:14:06.192 INFO [stderr] warning: unused variable: `peaks_len`
Dec 18 01:14:06.192 INFO [stderr]    --> src/hash.rs:116:9
Dec 18 01:14:06.192 INFO [stderr]     |
Dec 18 01:14:06.192 INFO [stderr] 116 |     let peaks_len = peaks.len();
Dec 18 01:14:06.192 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_peaks_len` instead
Dec 18 01:14:06.192 INFO [stderr]     |
Dec 18 01:14:06.192 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 01:14:06.192 INFO [stderr] 
Dec 18 01:14:06.192 INFO [stderr] warning: unused variable: `peak`
Dec 18 01:14:06.192 INFO [stderr]    --> src/hash.rs:126:13
Dec 18 01:14:06.192 INFO [stderr]     |
Dec 18 01:14:06.192 INFO [stderr] 126 |     for (i, peak) in peaks.iter().enumerate() {
Dec 18 01:14:06.192 INFO [stderr]     |             ^^^^ help: consider using `_peak` instead
Dec 18 01:14:06.192 INFO [stderr] 
Dec 18 01:14:06.192 INFO [stderr] warning: unused variable: `y`
Dec 18 01:14:06.192 INFO [stderr]    --> src/hash.rs:162:9
Dec 18 01:14:06.192 INFO [stderr]     |
Dec 18 01:14:06.192 INFO [stderr] 162 |     let y = rand::random::<f64>();
Dec 18 01:14:06.192 INFO [stderr]     |         ^ help: consider using `_y` instead
Dec 18 01:14:06.193 INFO [stderr] 
Dec 18 01:14:06.193 INFO [stderr] warning: unused variable: `offsets2`
Dec 18 01:14:06.193 INFO [stderr]   --> src/main.rs:65:13
Dec 18 01:14:06.193 INFO [stderr]    |
Dec 18 01:14:06.193 INFO [stderr] 65 |     let mut offsets2: Vec<(f32, f32, String)> = Vec::new();
Dec 18 01:14:06.193 INFO [stderr]    |             ^^^^^^^^ help: consider using `_offsets2` instead
Dec 18 01:14:06.193 INFO [stderr] 
Dec 18 01:14:06.193 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.193 INFO [stderr]    --> src/spectrogram.rs:183:9
Dec 18 01:14:06.193 INFO [stderr]     |
Dec 18 01:14:06.193 INFO [stderr] 183 |     let mut raw: Vec<Vec<f32>> = vec![Vec::new(); num_chunks - 1 as usize];
Dec 18 01:14:06.193 INFO [stderr]     |         ----^^^
Dec 18 01:14:06.193 INFO [stderr]     |         |
Dec 18 01:14:06.193 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.193 INFO [stderr] 
Dec 18 01:14:06.193 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.193 INFO [stderr]    --> src/spectrogram.rs:184:9
Dec 18 01:14:06.193 INFO [stderr]     |
Dec 18 01:14:06.193 INFO [stderr] 184 |     let mut output: Mutex<Vec<Vec<f32>>> = Mutex::new(raw);
Dec 18 01:14:06.193 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.193 INFO [stderr]     |         |
Dec 18 01:14:06.193 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.193 INFO [stderr] 
Dec 18 01:14:06.204 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.204 INFO [stderr]    --> src/spectrogram.rs:183:9
Dec 18 01:14:06.204 INFO [stderr]     |
Dec 18 01:14:06.204 INFO [stderr] 183 |     let mut raw: Vec<Vec<f32>> = vec![Vec::new(); num_chunks - 1 as usize];
Dec 18 01:14:06.204 INFO [stderr]     |         ----^^^
Dec 18 01:14:06.204 INFO [stderr]     |         |
Dec 18 01:14:06.204 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.204 INFO [stderr] 
Dec 18 01:14:06.204 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.204 INFO [stderr]    --> src/spectrogram.rs:184:9
Dec 18 01:14:06.204 INFO [stderr]     |
Dec 18 01:14:06.204 INFO [stderr] 184 |     let mut output: Mutex<Vec<Vec<f32>>> = Mutex::new(raw);
Dec 18 01:14:06.204 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.204 INFO [stderr]     |         |
Dec 18 01:14:06.204 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.204 INFO [stderr] 
Dec 18 01:14:06.212 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.212 INFO [stderr]   --> src/hash.rs:61:9
Dec 18 01:14:06.212 INFO [stderr]    |
Dec 18 01:14:06.212 INFO [stderr] 61 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.212 INFO [stderr]    |         ----^^
Dec 18 01:14:06.212 INFO [stderr]    |         |
Dec 18 01:14:06.212 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.212 INFO [stderr] 
Dec 18 01:14:06.212 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.212 INFO [stderr]    --> src/hash.rs:113:9
Dec 18 01:14:06.212 INFO [stderr]     |
Dec 18 01:14:06.212 INFO [stderr] 113 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.212 INFO [stderr]     |         ----^^
Dec 18 01:14:06.212 INFO [stderr]     |         |
Dec 18 01:14:06.212 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.212 INFO [stderr] 
Dec 18 01:14:06.212 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.212 INFO [stderr]    --> src/hash.rs:119:9
Dec 18 01:14:06.212 INFO [stderr]     |
Dec 18 01:14:06.212 INFO [stderr] 119 |     let mut output: Mutex<Vec<PeakHash>> = Mutex::new(vec![]);
Dec 18 01:14:06.213 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.213 INFO [stderr]     |         |
Dec 18 01:14:06.213 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.213 INFO [stderr] 
Dec 18 01:14:06.213 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.213 INFO [stderr]   --> src/main.rs:25:9
Dec 18 01:14:06.213 INFO [stderr]    |
Dec 18 01:14:06.213 INFO [stderr] 25 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.213 INFO [stderr]    |         ----^^
Dec 18 01:14:06.213 INFO [stderr]    |         |
Dec 18 01:14:06.213 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.213 INFO [stderr]    |
Dec 18 01:14:06.213 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 01:14:06.213 INFO [stderr] 
Dec 18 01:14:06.220 INFO [stderr] warning: unnecessary `unsafe` block
Dec 18 01:14:06.220 INFO [stderr]   --> src/lib.rs:69:5
Dec 18 01:14:06.220 INFO [stderr]    |
Dec 18 01:14:06.220 INFO [stderr] 69 |     unsafe { transformed[0] }
Dec 18 01:14:06.220 INFO [stderr]    |     ^^^^^^ unnecessary `unsafe` block
Dec 18 01:14:06.220 INFO [stderr]    |
Dec 18 01:14:06.220 INFO [stderr]    = note: #[warn(unused_unsafe)] on by default
Dec 18 01:14:06.220 INFO [stderr] 
Dec 18 01:14:06.236 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.236 INFO [stderr]   --> src/hash.rs:61:9
Dec 18 01:14:06.236 INFO [stderr]    |
Dec 18 01:14:06.236 INFO [stderr] 61 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.236 INFO [stderr]    |         ----^^
Dec 18 01:14:06.236 INFO [stderr]    |         |
Dec 18 01:14:06.236 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.236 INFO [stderr] 
Dec 18 01:14:06.236 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.236 INFO [stderr]    --> src/hash.rs:113:9
Dec 18 01:14:06.236 INFO [stderr]     |
Dec 18 01:14:06.236 INFO [stderr] 113 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.236 INFO [stderr]     |         ----^^
Dec 18 01:14:06.236 INFO [stderr]     |         |
Dec 18 01:14:06.236 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.236 INFO [stderr] 
Dec 18 01:14:06.236 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.236 INFO [stderr]    --> src/hash.rs:119:9
Dec 18 01:14:06.236 INFO [stderr]     |
Dec 18 01:14:06.236 INFO [stderr] 119 |     let mut output: Mutex<Vec<PeakHash>> = Mutex::new(vec![]);
Dec 18 01:14:06.236 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.236 INFO [stderr]     |         |
Dec 18 01:14:06.236 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.236 INFO [stderr] 
Dec 18 01:14:06.240 INFO [stderr] warning: unnecessary `unsafe` block
Dec 18 01:14:06.240 INFO [stderr]   --> src/lib.rs:69:5
Dec 18 01:14:06.240 INFO [stderr]    |
Dec 18 01:14:06.240 INFO [stderr] 69 |     unsafe { transformed[0] }
Dec 18 01:14:06.240 INFO [stderr]    |     ^^^^^^ unnecessary `unsafe` block
Dec 18 01:14:06.240 INFO [stderr]    |
Dec 18 01:14:06.240 INFO [stderr]    = note: #[warn(unused_unsafe)] on by default
Dec 18 01:14:06.240 INFO [stderr] 
Dec 18 01:14:06.273 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.273 INFO [stderr]   --> src/main.rs:44:9
Dec 18 01:14:06.273 INFO [stderr]    |
Dec 18 01:14:06.273 INFO [stderr] 44 |     let mut dups = 0;
Dec 18 01:14:06.273 INFO [stderr]    |         ----^^^^
Dec 18 01:14:06.273 INFO [stderr]    |         |
Dec 18 01:14:06.273 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.273 INFO [stderr] 
Dec 18 01:14:06.273 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.273 INFO [stderr]   --> src/main.rs:65:9
Dec 18 01:14:06.273 INFO [stderr]    |
Dec 18 01:14:06.273 INFO [stderr] 65 |     let mut offsets2: Vec<(f32, f32, String)> = Vec::new();
Dec 18 01:14:06.273 INFO [stderr]    |         ----^^^^^^^^
Dec 18 01:14:06.273 INFO [stderr]    |         |
Dec 18 01:14:06.273 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.273 INFO [stderr] 
Dec 18 01:14:06.292 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.292 INFO [stderr]   --> src/spectrogram.rs:62:13
Dec 18 01:14:06.292 INFO [stderr]    |
Dec 18 01:14:06.292 INFO [stderr] 62 |         let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.292 INFO [stderr]    |             ----^^
Dec 18 01:14:06.292 INFO [stderr]    |             |
Dec 18 01:14:06.292 INFO [stderr]    |             help: remove this `mut`
Dec 18 01:14:06.292 INFO [stderr] 
Dec 18 01:14:06.297 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.297 INFO [stderr]    --> src/spectrogram.rs:109:9
Dec 18 01:14:06.297 INFO [stderr]     |
Dec 18 01:14:06.297 INFO [stderr] 109 |     let mut new_spec = spectrum.split_off(half_index);
Dec 18 01:14:06.297 INFO [stderr]     |         ----^^^^^^^^
Dec 18 01:14:06.297 INFO [stderr]     |         |
Dec 18 01:14:06.297 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.297 INFO [stderr] 
Dec 18 01:14:06.297 INFO [stderr] warning: unused variable: `peaks_len`
Dec 18 01:14:06.297 INFO [stderr]    --> src/hash.rs:116:9
Dec 18 01:14:06.297 INFO [stderr]     |
Dec 18 01:14:06.297 INFO [stderr] 116 |     let peaks_len = peaks.len();
Dec 18 01:14:06.297 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_peaks_len` instead
Dec 18 01:14:06.298 INFO [stderr]     |
Dec 18 01:14:06.298 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 01:14:06.298 INFO [stderr] 
Dec 18 01:14:06.298 INFO [stderr] warning: unused variable: `peak`
Dec 18 01:14:06.298 INFO [stderr]    --> src/hash.rs:126:13
Dec 18 01:14:06.298 INFO [stderr]     |
Dec 18 01:14:06.298 INFO [stderr] 126 |     for (i, peak) in peaks.iter().enumerate() {
Dec 18 01:14:06.298 INFO [stderr]     |             ^^^^ help: consider using `_peak` instead
Dec 18 01:14:06.298 INFO [stderr] 
Dec 18 01:14:06.298 INFO [stderr] warning: unused variable: `y`
Dec 18 01:14:06.298 INFO [stderr]    --> src/hash.rs:162:9
Dec 18 01:14:06.298 INFO [stderr]     |
Dec 18 01:14:06.298 INFO [stderr] 162 |     let y = rand::random::<f64>();
Dec 18 01:14:06.298 INFO [stderr]     |         ^ help: consider using `_y` instead
Dec 18 01:14:06.298 INFO [stderr] 
Dec 18 01:14:06.298 INFO [stderr] warning: unused variable: `offsets2`
Dec 18 01:14:06.298 INFO [stderr]   --> src/main.rs:65:13
Dec 18 01:14:06.298 INFO [stderr]    |
Dec 18 01:14:06.298 INFO [stderr] 65 |     let mut offsets2: Vec<(f32, f32, String)> = Vec::new();
Dec 18 01:14:06.298 INFO [stderr]    |             ^^^^^^^^ help: consider using `_offsets2` instead
Dec 18 01:14:06.298 INFO [stderr] 
Dec 18 01:14:06.302 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.302 INFO [stderr]   --> src/main.rs:25:9
Dec 18 01:14:06.302 INFO [stderr]    |
Dec 18 01:14:06.302 INFO [stderr] 25 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.302 INFO [stderr]    |         ----^^
Dec 18 01:14:06.302 INFO [stderr]    |         |
Dec 18 01:14:06.302 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.302 INFO [stderr]    |
Dec 18 01:14:06.302 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 01:14:06.302 INFO [stderr] 
Dec 18 01:14:06.317 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.317 INFO [stderr]    --> src/spectrogram.rs:183:9
Dec 18 01:14:06.317 INFO [stderr]     |
Dec 18 01:14:06.317 INFO [stderr] 183 |     let mut raw: Vec<Vec<f32>> = vec![Vec::new(); num_chunks - 1 as usize];
Dec 18 01:14:06.317 INFO [stderr]     |         ----^^^
Dec 18 01:14:06.317 INFO [stderr]     |         |
Dec 18 01:14:06.317 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.317 INFO [stderr] 
Dec 18 01:14:06.317 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.318 INFO [stderr]    --> src/spectrogram.rs:184:9
Dec 18 01:14:06.318 INFO [stderr]     |
Dec 18 01:14:06.318 INFO [stderr] 184 |     let mut output: Mutex<Vec<Vec<f32>>> = Mutex::new(raw);
Dec 18 01:14:06.318 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.318 INFO [stderr]     |         |
Dec 18 01:14:06.318 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.318 INFO [stderr] 
Dec 18 01:14:06.323 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.323 INFO [stderr]   --> src/main.rs:44:9
Dec 18 01:14:06.323 INFO [stderr]    |
Dec 18 01:14:06.323 INFO [stderr] 44 |     let mut dups = 0;
Dec 18 01:14:06.323 INFO [stderr]    |         ----^^^^
Dec 18 01:14:06.323 INFO [stderr]    |         |
Dec 18 01:14:06.323 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.323 INFO [stderr] 
Dec 18 01:14:06.323 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.323 INFO [stderr]   --> src/main.rs:65:9
Dec 18 01:14:06.323 INFO [stderr]    |
Dec 18 01:14:06.323 INFO [stderr] 65 |     let mut offsets2: Vec<(f32, f32, String)> = Vec::new();
Dec 18 01:14:06.323 INFO [stderr]    |         ----^^^^^^^^
Dec 18 01:14:06.323 INFO [stderr]    |         |
Dec 18 01:14:06.323 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.323 INFO [stderr] 
Dec 18 01:14:06.328 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.328 INFO [stderr]   --> src/hash.rs:61:9
Dec 18 01:14:06.329 INFO [stderr]    |
Dec 18 01:14:06.329 INFO [stderr] 61 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.329 INFO [stderr]    |         ----^^
Dec 18 01:14:06.329 INFO [stderr]    |         |
Dec 18 01:14:06.329 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.329 INFO [stderr] 
Dec 18 01:14:06.332 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.332 INFO [stderr]   --> src/spectrogram.rs:62:13
Dec 18 01:14:06.332 INFO [stderr]    |
Dec 18 01:14:06.332 INFO [stderr] 62 |         let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.332 INFO [stderr]    |             ----^^
Dec 18 01:14:06.332 INFO [stderr]    |             |
Dec 18 01:14:06.332 INFO [stderr]    |             help: remove this `mut`
Dec 18 01:14:06.332 INFO [stderr] 
Dec 18 01:14:06.336 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.336 INFO [stderr]    --> src/hash.rs:113:9
Dec 18 01:14:06.336 INFO [stderr]     |
Dec 18 01:14:06.336 INFO [stderr] 113 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.336 INFO [stderr]     |         ----^^
Dec 18 01:14:06.336 INFO [stderr]     |         |
Dec 18 01:14:06.336 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.336 INFO [stderr] 
Dec 18 01:14:06.336 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.336 INFO [stderr]    --> src/hash.rs:119:9
Dec 18 01:14:06.336 INFO [stderr]     |
Dec 18 01:14:06.336 INFO [stderr] 119 |     let mut output: Mutex<Vec<PeakHash>> = Mutex::new(vec![]);
Dec 18 01:14:06.336 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.336 INFO [stderr]     |         |
Dec 18 01:14:06.336 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.336 INFO [stderr] 
Dec 18 01:14:06.343 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.343 INFO [stderr]    --> src/spectrogram.rs:109:9
Dec 18 01:14:06.343 INFO [stderr]     |
Dec 18 01:14:06.343 INFO [stderr] 109 |     let mut new_spec = spectrum.split_off(half_index);
Dec 18 01:14:06.343 INFO [stderr]     |         ----^^^^^^^^
Dec 18 01:14:06.343 INFO [stderr]     |         |
Dec 18 01:14:06.343 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.343 INFO [stderr] 
Dec 18 01:14:06.343 INFO [stderr] warning: function is never used: `gen_spectrogram`
Dec 18 01:14:06.344 INFO [stderr]   --> src/main.rs:33:1
Dec 18 01:14:06.344 INFO [stderr]    |
Dec 18 01:14:06.344 INFO [stderr] 33 | fn gen_spectrogram<P: AsRef<std::path::Path>>(wav: P, image: P) {
Dec 18 01:14:06.344 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.344 INFO [stderr]    |
Dec 18 01:14:06.344 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:14:06.344 INFO [stderr] 
Dec 18 01:14:06.344 INFO [stderr] warning: function is never used: `test_fingerprinting`
Dec 18 01:14:06.344 INFO [stderr]   --> src/main.rs:39:1
Dec 18 01:14:06.344 INFO [stderr]    |
Dec 18 01:14:06.344 INFO [stderr] 39 | fn test_fingerprinting() {
Dec 18 01:14:06.344 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.344 INFO [stderr] 
Dec 18 01:14:06.359 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.359 INFO [stderr]    --> src/spectrogram.rs:183:9
Dec 18 01:14:06.359 INFO [stderr]     |
Dec 18 01:14:06.359 INFO [stderr] 183 |     let mut raw: Vec<Vec<f32>> = vec![Vec::new(); num_chunks - 1 as usize];
Dec 18 01:14:06.359 INFO [stderr]     |         ----^^^
Dec 18 01:14:06.359 INFO [stderr]     |         |
Dec 18 01:14:06.359 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.359 INFO [stderr] 
Dec 18 01:14:06.359 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.359 INFO [stderr]    --> src/spectrogram.rs:184:9
Dec 18 01:14:06.359 INFO [stderr]     |
Dec 18 01:14:06.359 INFO [stderr] 184 |     let mut output: Mutex<Vec<Vec<f32>>> = Mutex::new(raw);
Dec 18 01:14:06.359 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.359 INFO [stderr]     |         |
Dec 18 01:14:06.359 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.359 INFO [stderr] 
Dec 18 01:14:06.374 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.374 INFO [stderr]   --> src/hash.rs:61:9
Dec 18 01:14:06.374 INFO [stderr]    |
Dec 18 01:14:06.374 INFO [stderr] 61 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.374 INFO [stderr]    |         ----^^
Dec 18 01:14:06.374 INFO [stderr]    |         |
Dec 18 01:14:06.374 INFO [stderr]    |         help: remove this `mut`
Dec 18 01:14:06.374 INFO [stderr] 
Dec 18 01:14:06.380 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.380 INFO [stderr]    --> src/hash.rs:113:9
Dec 18 01:14:06.380 INFO [stderr]     |
Dec 18 01:14:06.380 INFO [stderr] 113 |     let mut sw = Stopwatch::start_new();
Dec 18 01:14:06.380 INFO [stderr]     |         ----^^
Dec 18 01:14:06.380 INFO [stderr]     |         |
Dec 18 01:14:06.380 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.380 INFO [stderr] 
Dec 18 01:14:06.380 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:14:06.380 INFO [stderr]    --> src/hash.rs:119:9
Dec 18 01:14:06.380 INFO [stderr]     |
Dec 18 01:14:06.380 INFO [stderr] 119 |     let mut output: Mutex<Vec<PeakHash>> = Mutex::new(vec![]);
Dec 18 01:14:06.380 INFO [stderr]     |         ----^^^^^^
Dec 18 01:14:06.380 INFO [stderr]     |         |
Dec 18 01:14:06.380 INFO [stderr]     |         help: remove this `mut`
Dec 18 01:14:06.380 INFO [stderr] 
Dec 18 01:14:06.384 INFO [stderr] warning: function is never used: `gen_spectrogram`
Dec 18 01:14:06.384 INFO [stderr]   --> src/main.rs:33:1
Dec 18 01:14:06.384 INFO [stderr]    |
Dec 18 01:14:06.384 INFO [stderr] 33 | fn gen_spectrogram<P: AsRef<std::path::Path>>(wav: P, image: P) {
Dec 18 01:14:06.384 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.384 INFO [stderr]    |
Dec 18 01:14:06.384 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:14:06.384 INFO [stderr] 
Dec 18 01:14:06.384 INFO [stderr] warning: function is never used: `test_fingerprinting`
Dec 18 01:14:06.384 INFO [stderr]   --> src/main.rs:39:1
Dec 18 01:14:06.384 INFO [stderr]    |
Dec 18 01:14:06.384 INFO [stderr] 39 | fn test_fingerprinting() {
Dec 18 01:14:06.384 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:14:06.384 INFO [stderr] 
Dec 18 01:14:06.418 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.09s
Dec 18 01:14:06.738 INFO running `"docker" "inspect" "6fb53fdfbc19be1cf917dc9ee7cbca94a43beca61664e98cd2a833d09462641a"`
Dec 18 01:14:06.836 INFO running `"docker" "rm" "-f" "6fb53fdfbc19be1cf917dc9ee7cbca94a43beca61664e98cd2a833d09462641a"`
Dec 18 01:14:06.968 INFO [stdout] 6fb53fdfbc19be1cf917dc9ee7cbca94a43beca61664e98cd2a833d09462641a