[INFO] cloning repository weargoggles/netnoise
[INFO] running `"git" "clone" "--bare" "git://github.com/weargoggles/netnoise.git" "work/cache/sources/gh/weargoggles/netnoise"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/weargoggles/netnoise'...
[INFO] running `"git" "clone" "work/cache/sources/gh/weargoggles/netnoise" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/weargoggles/netnoise"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/weargoggles/netnoise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/weargoggles/netnoise" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/weargoggles/netnoise"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/weargoggles/netnoise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c272fa49ea3d183b275e23ca400e35977857589
[INFO] sha for GitHub repo weargoggles/netnoise: 7c272fa49ea3d183b275e23ca400e35977857589
[INFO] validating manifest of weargoggles/netnoise on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of weargoggles/netnoise on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing weargoggles/netnoise
[INFO] finished frobbing weargoggles/netnoise
[INFO] frobbed toml for weargoggles/netnoise written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/weargoggles/netnoise/Cargo.toml
[INFO] started frobbing weargoggles/netnoise
[INFO] finished frobbing weargoggles/netnoise
[INFO] frobbed toml for weargoggles/netnoise written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/weargoggles/netnoise/Cargo.toml
[INFO] crate weargoggles/netnoise already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking weargoggles/netnoise against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-5/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/weargoggles/netnoise:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 59f02a432508070fd646d7661cf372644e5d1097c7c8290d7114a11149264562
[INFO] running `"docker" "start" "-a" "59f02a432508070fd646d7661cf372644e5d1097c7c8290d7114a11149264562"`
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking sdl2-sys v0.30.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking sdl2 v0.30.0
[INFO] [stderr]     Checking netnoise v0.1.0 (/opt/crater/workdir)
[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: consider prefixing 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: consider prefixing with an underscore: `_e`
[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: consider prefixing 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: consider prefixing 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 item 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:19:1
[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: 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 item 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:19:1
[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]     Finished dev [unoptimized + debuginfo] target(s) in 5.85s
[INFO] running `"docker" "inspect" "59f02a432508070fd646d7661cf372644e5d1097c7c8290d7114a11149264562"`
[INFO] running `"docker" "rm" "-f" "59f02a432508070fd646d7661cf372644e5d1097c7c8290d7114a11149264562"`
[INFO] [stdout] 59f02a432508070fd646d7661cf372644e5d1097c7c8290d7114a11149264562