[INFO] updating cached repository nutcase84/piano
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nutcase84/piano
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nutcase84/piano" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/nutcase84/piano"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/nutcase84/piano'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nutcase84/piano" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/nutcase84/piano"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/nutcase84/piano'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] abe074523491d7b9e085aaf0d9c54c2831a44f40
[INFO] sha for GitHub repo nutcase84/piano: abe074523491d7b9e085aaf0d9c54c2831a44f40
[INFO] validating manifest of nutcase84/piano on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nutcase84/piano on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nutcase84/piano
[INFO] finished frobbing nutcase84/piano
[INFO] frobbed toml for nutcase84/piano written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/nutcase84/piano/Cargo.toml
[INFO] started frobbing nutcase84/piano
[INFO] finished frobbing nutcase84/piano
[INFO] frobbed toml for nutcase84/piano written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/nutcase84/piano/Cargo.toml
[INFO] crate nutcase84/piano already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nutcase84/piano against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/nutcase84/piano:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7a42ecd4766ccfa474851ed0cb5ff90809b6bc211ce0eafad5b503cbf6d79586
[INFO] running `"docker" "start" "-a" "7a42ecd4766ccfa474851ed0cb5ff90809b6bc211ce0eafad5b503cbf6d79586"`
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking vst v0.0.1
[INFO] [stderr]     Checking piano v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `active_notes` is assigned to, but never used
[INFO] [stderr]   --> src/event.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut active_notes = 0; // could be useful later
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_active_notes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/filter.rs:54:7
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for i in 0..buffer_size {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `active_notes` is assigned to, but never used
[INFO] [stderr]   --> src/event.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut active_notes = 0; // could be useful later
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_active_notes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/filter.rs:54:7
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for i in 0..buffer_size {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hammer`
[INFO] [stderr]  --> src/hammer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn hammer(string: &mut Waveguide, stiffness: f32, size: usize, velocity: f32, position: usize, time: f32) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IntegerAllPass`
[INFO] [stderr]  --> src/filter.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct IntegerAllPass { // Generic integer-delay allpass
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/filter.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(gain: f32, size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/filter.rs:18:2
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn update(&mut self, input: f32) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hammer`
[INFO] [stderr]  --> src/hammer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn hammer(string: &mut Waveguide, stiffness: f32, size: usize, velocity: f32, position: usize, time: f32) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IntegerAllPass`
[INFO] [stderr]  --> src/filter.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct IntegerAllPass { // Generic integer-delay allpass
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/filter.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(gain: f32, size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/filter.rs:18:2
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn update(&mut self, input: f32) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `"docker" "inspect" "7a42ecd4766ccfa474851ed0cb5ff90809b6bc211ce0eafad5b503cbf6d79586"`
[INFO] running `"docker" "rm" "-f" "7a42ecd4766ccfa474851ed0cb5ff90809b6bc211ce0eafad5b503cbf6d79586"`
[INFO] [stdout] 7a42ecd4766ccfa474851ed0cb5ff90809b6bc211ce0eafad5b503cbf6d79586