[INFO] cloning repository https://github.com/ThaFireDragonOfDeath/open-mediacheck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ThaFireDragonOfDeath/open-mediacheck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThaFireDragonOfDeath%2Fopen-mediacheck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThaFireDragonOfDeath%2Fopen-mediacheck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18a05bdbd8418a921c80dcfe8c29404fab5a0a0b
[INFO] checking ThaFireDragonOfDeath/open-mediacheck against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThaFireDragonOfDeath%2Fopen-mediacheck" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThaFireDragonOfDeath/open-mediacheck on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ThaFireDragonOfDeath/open-mediacheck
[INFO] finished tweaking git repo https://github.com/ThaFireDragonOfDeath/open-mediacheck
[INFO] tweaked toml for git repo https://github.com/ThaFireDragonOfDeath/open-mediacheck written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ThaFireDragonOfDeath/open-mediacheck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d42dec521e4b38b435c8efe241b9e7bf15bed0d4f1b3a255ba21bbfe1c9f19d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d42dec521e4b38b435c8efe241b9e7bf15bed0d4f1b3a255ba21bbfe1c9f19d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d42dec521e4b38b435c8efe241b9e7bf15bed0d4f1b3a255ba21bbfe1c9f19d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d42dec521e4b38b435c8efe241b9e7bf15bed0d4f1b3a255ba21bbfe1c9f19d3", kill_on_drop: false }`
[INFO] [stdout] d42dec521e4b38b435c8efe241b9e7bf15bed0d4f1b3a255ba21bbfe1c9f19d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6530e9f831a1dc986966947bf3266a3287274b603a33053c5f57632528be4220
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6530e9f831a1dc986966947bf3266a3287274b603a33053c5f57632528be4220", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking safe-transmute v0.10.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking strength_reduce v0.2.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking inflate v0.4.4
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rustfft v3.0.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.0
[INFO] [stderr]     Checking open-mediacheck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Sample`, `WavSamples`
[INFO] [stdout]  --> src/audio.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use self::hound::{WavReader,WavSamples,Sample};
[INFO] [stdout]   |                             ^^^^^^^^^^ ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/audio.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/audio.rs:48:15
[INFO] [stdout]    |
[INFO] [stdout] 48 | ...le ((hash_area_offset_in_seconds as f32 + hash_area_size_in_seconds as f32 + hash_area_distance_in_seconds as f32) < (remaining_audio as f32)...
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/audio.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 |             remaining_audio -= (hash_area_size_in_seconds as f32 + hash_area_distance_in_seconds as f32);
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:128:16
[INFO] [stdout]     |
[INFO] [stdout] 128 |             if (read_fft < samples_per_second / 2) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 | ...if (read_fft >= (frequency_sidecrop_left as f32 * hash_area_size_in_seconds) as u32 && read_fft <= (frequency_sidecrop_right as f32 * hash_area_size_in_seconds) as u32...
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:176:16
[INFO] [stdout]     |
[INFO] [stdout] 176 |             if (x == 0) {
[INFO] [stdout]     |                ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:187:15
[INFO] [stdout]     |
[INFO] [stdout] 187 |             if(*fft_abs > fft_max) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:198:15
[INFO] [stdout]     |
[INFO] [stdout] 198 |             if(fft_current_iter != 0) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:218:16
[INFO] [stdout]     |
[INFO] [stdout] 218 |             if (duration_samples == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Sample`, `WavSamples`
[INFO] [stdout]  --> src/audio.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use self::hound::{WavReader,WavSamples,Sample};
[INFO] [stdout]   |                             ^^^^^^^^^^ ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/audio.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/audio.rs:48:15
[INFO] [stdout]    |
[INFO] [stdout] 48 | ...le ((hash_area_offset_in_seconds as f32 + hash_area_size_in_seconds as f32 + hash_area_distance_in_seconds as f32) < (remaining_audio as f32)...
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/audio.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 |             remaining_audio -= (hash_area_size_in_seconds as f32 + hash_area_distance_in_seconds as f32);
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:128:16
[INFO] [stdout]     |
[INFO] [stdout] 128 |             if (read_fft < samples_per_second / 2) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 | ...if (read_fft >= (frequency_sidecrop_left as f32 * hash_area_size_in_seconds) as u32 && read_fft <= (frequency_sidecrop_right as f32 * hash_area_size_in_seconds) as u32...
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:176:16
[INFO] [stdout]     |
[INFO] [stdout] 176 |             if (x == 0) {
[INFO] [stdout]     |                ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:187:15
[INFO] [stdout]     |
[INFO] [stdout] 187 |             if(*fft_abs > fft_max) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:198:15
[INFO] [stdout]     |
[INFO] [stdout] 198 |             if(fft_current_iter != 0) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/audio.rs:218:16
[INFO] [stdout]     |
[INFO] [stdout] 218 |             if (duration_samples == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `audio_hashes`
[INFO] [stdout]   --> src/audio.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut audio_hashes: Vec<String> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio_hashes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_mode`
[INFO] [stdout]   --> src/audio.rs:25:53
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn calc_gen_ahash(&self, hash_bitsize: u16, output_mode: OutputMode) {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/audio.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         for x in 0..bitcount - cat {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/audio.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for x in 0..cat {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_mode`
[INFO] [stdout]   --> src/picture.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn calc_ahash(&self, hash_bitsize: u16, output_mode: OutputMode) -> String {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut target_audio: TargetAudio = TargetAudio::new(&audio_test_file);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `audio_hashes`
[INFO] [stdout]   --> src/audio.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut audio_hashes: Vec<String> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio_hashes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_mode`
[INFO] [stdout]   --> src/audio.rs:25:53
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn calc_gen_ahash(&self, hash_bitsize: u16, output_mode: OutputMode) {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/audio.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         for x in 0..bitcount - cat {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/audio.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for x in 0..cat {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_mode`
[INFO] [stdout]   --> src/picture.rs:19:49
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn calc_ahash(&self, hash_bitsize: u16, output_mode: OutputMode) -> String {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut target_audio2: TargetAudio = TargetAudio::new(&audio_test_file2);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut target_audio3: TargetAudio = TargetAudio::new(&audio_test_file3);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut target_audio: TargetAudio = TargetAudio::new(&audio_test_file);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut target_audio2: TargetAudio = TargetAudio::new(&audio_test_file2);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut target_audio3: TargetAudio = TargetAudio::new(&audio_test_file3);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/audio.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut audio_hashes: Vec<String> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/audio.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...   let mut fft_samples_abs = TargetAudio::normalize_fftsamples(&mut fft_samples, hash_bitsize, samples_per_second, frequency_sidecrop_...
[INFO] [stdout]    |           ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/audio.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut audio_hashes: Vec<String> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/audio.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...   let mut fft_samples_abs = TargetAudio::normalize_fftsamples(&mut fft_samples, hash_bitsize, samples_per_second, frequency_sidecrop_...
[INFO] [stdout]    |           ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hex`
[INFO] [stdout]  --> src/common.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Hex,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hex`
[INFO] [stdout]  --> src/common.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Hex,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.15s
[INFO] running `Command { std: "docker" "inspect" "6530e9f831a1dc986966947bf3266a3287274b603a33053c5f57632528be4220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6530e9f831a1dc986966947bf3266a3287274b603a33053c5f57632528be4220", kill_on_drop: false }`
[INFO] [stdout] 6530e9f831a1dc986966947bf3266a3287274b603a33053c5f57632528be4220
