[INFO] updating cached repository https://github.com/weargoggles/netnoise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c272fa49ea3d183b275e23ca400e35977857589
[INFO] testing weargoggles/netnoise against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweargoggles%2Fnetnoise" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/weargoggles/netnoise 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/weargoggles/netnoise
[INFO] finished tweaking git repo https://github.com/weargoggles/netnoise
[INFO] tweaked toml for git repo https://github.com/weargoggles/netnoise written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/weargoggles/netnoise 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--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] b6c4f5ef1c45862740e08547c3d381439d4d23f907a91ccb1f924c7731bce4a8
[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" "b6c4f5ef1c45862740e08547c3d381439d4d23f907a91ccb1f924c7731bce4a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6c4f5ef1c45862740e08547c3d381439d4d23f907a91ccb1f924c7731bce4a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6c4f5ef1c45862740e08547c3d381439d4d23f907a91ccb1f924c7731bce4a8", kill_on_drop: false }`
[INFO] [stdout] b6c4f5ef1c45862740e08547c3d381439d4d23f907a91ccb1f924c7731bce4a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--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] fb082432694860a4d3e282c5ce103f181e9166b01e032ff039082165630df8a5
[INFO] running `Command { std: "docker" "start" "-a" "fb082432694860a4d3e282c5ce103f181e9166b01e032ff039082165630df8a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling sdl2-sys v0.30.0
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling sdl2 v0.30.0
[INFO] [stderr]    Compiling netnoise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | const QUANTIZE_NS: u64 = (1000000000 / (SAMPLE_RATE as u64));
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/music.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     lazy_static! {
[INFO] [stdout] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stdout] 14 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/music.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     lazy_static! {
[INFO] [stdout] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stdout] 14 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spec`
[INFO] [stdout]    --> src/main.rs:106:70
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let device = audio_subsystem.open_playback(None, &desired_spec, |spec| {
[INFO] [stdout]     |                                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_spec`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/music.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut scale = vec![tonic]; //  in G
[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: constant is never used: `DECAY`
[INFO] [stdout]  --> src/synth.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | const DECAY: f32 = 0.0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_wave`
[INFO] [stdout]   --> src/synth.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn gen_wave(samples_to_write: i32, frequency: f32, sample_rate: i32) -> Vec<i16> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.88s
[INFO] running `Command { std: "docker" "inspect" "fb082432694860a4d3e282c5ce103f181e9166b01e032ff039082165630df8a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb082432694860a4d3e282c5ce103f181e9166b01e032ff039082165630df8a5", kill_on_drop: false }`
[INFO] [stdout] fb082432694860a4d3e282c5ce103f181e9166b01e032ff039082165630df8a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--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] db7351bcfd304f8941ee1b498cabd86bce5a1bcccbbfe52712278dda597ad859
[INFO] running `Command { std: "docker" "start" "-a" "db7351bcfd304f8941ee1b498cabd86bce5a1bcccbbfe52712278dda597ad859", kill_on_drop: false }`
[INFO] [stderr]    Compiling netnoise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | const QUANTIZE_NS: u64 = (1000000000 / (SAMPLE_RATE as u64));
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]  --> src/music.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stdout] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stdout] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stdout] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/music.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     lazy_static! {
[INFO] [stdout] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stdout] 14 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/music.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     lazy_static! {
[INFO] [stdout] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stdout] 14 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spec`
[INFO] [stdout]    --> src/main.rs:106:70
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let device = audio_subsystem.open_playback(None, &desired_spec, |spec| {
[INFO] [stdout]     |                                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_spec`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/music.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut scale = vec![tonic]; //  in G
[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: constant is never used: `DECAY`
[INFO] [stdout]  --> src/synth.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | const DECAY: f32 = 0.0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_wave`
[INFO] [stdout]   --> src/synth.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn gen_wave(samples_to_write: i32, frequency: f32, sample_rate: i32) -> Vec<i16> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "db7351bcfd304f8941ee1b498cabd86bce5a1bcccbbfe52712278dda597ad859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db7351bcfd304f8941ee1b498cabd86bce5a1bcccbbfe52712278dda597ad859", kill_on_drop: false }`
[INFO] [stdout] db7351bcfd304f8941ee1b498cabd86bce5a1bcccbbfe52712278dda597ad859
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aaef928312d5d292abc2aaced78eda090239fe96816a883267bc7ecd5391d19d
[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" "aaef928312d5d292abc2aaced78eda090239fe96816a883267bc7ecd5391d19d", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:17:26
[INFO] [stderr]    |
[INFO] [stderr] 17 | const QUANTIZE_NS: u64 = (1000000000 / (SAMPLE_RATE as u64));
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/music.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     pub static ref IONIAN: Vec<i32> = vec![2, 2, 1, 2, 2, 2, 1];
[INFO] [stderr] 6 | |     pub static ref HARMONIC_MAJOR: Vec<i32> = vec![2, 2, 1, 2, 1, 2, 1];
[INFO] [stderr] 7 | |     pub static ref AEOLIAN: Vec<i32> = vec![2, 1, 2, 2, 1, 2, 2];
[INFO] [stderr] 8 | |     pub static ref PHRYGIAN_DOMINANT: Vec<i32> = vec![1, 3, 1, 2, 1, 2, 2];
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/music.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     lazy_static! {
[INFO] [stderr] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/music.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     lazy_static! {
[INFO] [stderr] 13 | |         static ref A: f32 = (2.0 as f32).powf(1.0/12.0);
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec`
[INFO] [stderr]    --> src/main.rs:106:70
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let device = audio_subsystem.open_playback(None, &desired_spec, |spec| {
[INFO] [stderr]     |                                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_spec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |             Err(e) => {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/music.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut scale = vec![tonic]; //  in G
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DECAY`
[INFO] [stderr]  --> src/synth.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | const DECAY: f32 = 0.0;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_wave`
[INFO] [stderr]   --> src/synth.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn gen_wave(samples_to_write: i32, frequency: f32, sample_rate: i32) -> Vec<i16> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/netnoise-0092f22d888a2667
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aaef928312d5d292abc2aaced78eda090239fe96816a883267bc7ecd5391d19d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaef928312d5d292abc2aaced78eda090239fe96816a883267bc7ecd5391d19d", kill_on_drop: false }`
[INFO] [stdout] aaef928312d5d292abc2aaced78eda090239fe96816a883267bc7ecd5391d19d