[INFO] cloning repository https://github.com/Cubeasauros/audio_maker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cubeasauros/audio_maker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCubeasauros%2Faudio_maker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCubeasauros%2Faudio_maker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4359cd5561ab69e5f771da2b91b9b07da57736a3
[INFO] checking Cubeasauros/audio_maker against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCubeasauros%2Faudio_maker" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cubeasauros/audio_maker on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cubeasauros/audio_maker
[INFO] finished tweaking git repo https://github.com/Cubeasauros/audio_maker
[INFO] tweaked toml for git repo https://github.com/Cubeasauros/audio_maker written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Cubeasauros/audio_maker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2e657e8affa2cf8d8e39d484f6bca46be8fa29a8dc99079cfa34a70debdd598
[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" "e2e657e8affa2cf8d8e39d484f6bca46be8fa29a8dc99079cfa34a70debdd598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2e657e8affa2cf8d8e39d484f6bca46be8fa29a8dc99079cfa34a70debdd598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2e657e8affa2cf8d8e39d484f6bca46be8fa29a8dc99079cfa34a70debdd598", kill_on_drop: false }`
[INFO] [stdout] e2e657e8affa2cf8d8e39d484f6bca46be8fa29a8dc99079cfa34a70debdd598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8edb623eddc4aa32837ea390e69695d2ceb88b491eea787ab5d2828127330d68
[INFO] running `Command { std: "docker" "start" "-a" "8edb623eddc4aa32837ea390e69695d2ceb88b491eea787ab5d2828127330d68", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking test2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/audio_test/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/audio_test/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fmtType` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                ^^^^^^^ help: convert the identifier to snake case: `fmt_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numChannels` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                            ^^^^^^^^^^^ help: convert the identifier to snake case: `num_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:44
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bitsPerSample` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:59
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^ help: convert the identifier to snake case: `bits_per_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fmtType` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                ^^^^^^^ help: convert the identifier to snake case: `fmt_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numChannels` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                            ^^^^^^^^^^^ help: convert the identifier to snake case: `num_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:44
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bitsPerSample` should have a snake case name
[INFO] [stdout]   --> src/audio_test/mod.rs:68:59
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16)->Wave{
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^ help: convert the identifier to snake case: `bits_per_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/audio_test/mod.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 sample.write_u32::<LittleEndian>(sample16bit);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/audio_test/mod.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 sample.write_u32::<LittleEndian>(sample16bit);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/audio_test/mod.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         file.write(&audfile);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fmtType` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:16
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                ^^^^^^^ help: convert the identifier to snake case: `fmt_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numChannels` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:28
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                            ^^^^^^^^^^^ help: convert the identifier to snake case: `num_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:44
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                                            ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bitsPerSample` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:59
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^ help: convert the identifier to snake case: `bits_per_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/audio_test/mod.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         file.write(&audfile);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fmtType` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:16
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                ^^^^^^^ help: convert the identifier to snake case: `fmt_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numChannels` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:28
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                            ^^^^^^^^^^^ help: convert the identifier to snake case: `num_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:44
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                                            ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bitsPerSample` should have a snake case name
[INFO] [stdout]    --> src/audio_test/mod.rs:253:59
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn new(fmtType:u16,numChannels:u16,sampleRate:u32,bitsPerSample:u16,)->WaveHeader{
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^ help: convert the identifier to snake case: `bits_per_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `byteorder::LittleEndian`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byteorder::LittleEndian;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `WriteBytesExt`
[INFO] [stdout]  --> src/main.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use byteorder::{BigEndian,WriteBytesExt};
[INFO] [stdout]   |                 ^^^^^^^^^ ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `byteorder::LittleEndian`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byteorder::LittleEndian;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `WriteBytesExt`
[INFO] [stdout]  --> src/main.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use byteorder::{BigEndian,WriteBytesExt};
[INFO] [stdout]   |                 ^^^^^^^^^ ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut b:Vec<u8>=Vec::new();
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_b` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/main.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     b=b"Hello world".to_vec();
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut music_vec:Vec<f32>=Vec::new();
[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: function is never used: `mani`
[INFO] [stdout]   --> src/main.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn mani(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ma`
[INFO] [stdout]   --> src/main.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn ma(){
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mainok`
[INFO] [stdout]    --> src/main.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn mainok() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `file_to_bytes`
[INFO] [stdout]    --> src/main.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn file_to_bytes(path:&Path)->Result<Vec<u8>,std::io::Error>{
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let sampleRate=44100.0;
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut b:Vec<u8>=Vec::new();
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_b` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/main.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     b=b"Hello world".to_vec();
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut music_vec:Vec<f32>=Vec::new();
[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: function is never used: `mani`
[INFO] [stdout]   --> src/main.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn mani(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ma`
[INFO] [stdout]   --> src/main.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn ma(){
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mainok`
[INFO] [stdout]    --> src/main.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn mainok() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `file_to_bytes`
[INFO] [stdout]    --> src/main.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn file_to_bytes(path:&Path)->Result<Vec<u8>,std::io::Error>{
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sampleRate` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let sampleRate=44100.0;
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `sample_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     newfile.write(&test());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     new_image.write(&img);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     newfile.write(&test());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     new_image.write(&img);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `Command { std: "docker" "inspect" "8edb623eddc4aa32837ea390e69695d2ceb88b491eea787ab5d2828127330d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8edb623eddc4aa32837ea390e69695d2ceb88b491eea787ab5d2828127330d68", kill_on_drop: false }`
[INFO] [stdout] 8edb623eddc4aa32837ea390e69695d2ceb88b491eea787ab5d2828127330d68