[INFO] crate riff-wave 0.1.2 is already in cache
[INFO] extracting crate riff-wave 0.1.2 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/riff-wave/0.1.2
[INFO] extracting crate riff-wave 0.1.2 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/riff-wave/0.1.2
[INFO] validating manifest of riff-wave-0.1.2 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of riff-wave-0.1.2 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing riff-wave-0.1.2
[INFO] finished frobbing riff-wave-0.1.2
[INFO] frobbed toml for riff-wave-0.1.2 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/riff-wave/0.1.2/Cargo.toml
[INFO] started frobbing riff-wave-0.1.2
[INFO] finished frobbing riff-wave-0.1.2
[INFO] frobbed toml for riff-wave-0.1.2 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/riff-wave/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking riff-wave-0.1.2 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/riff-wave/0.1.2:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8663c3628d14f45dd9ca2bac516a0006528214dfe84bc0b383c846f7750e77f1
[INFO] running `"docker" "start" "-a" "8663c3628d14f45dd9ca2bac516a0006528214dfe84bc0b383c846f7750e77f1"`
[INFO] [stderr]     Checking decibel v0.1.2
[INFO] [stderr]     Checking riff-wave v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> examples/playback.rs:23:37
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::io::{BufReader, BufWriter, Read, Seek, Write};
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `WaveReader`
[INFO] [stderr]   --> examples/playback.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 | use riff_wave::{WaveReader, WaveWriter};
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_temporary_file_path`
[INFO] [stderr]   --> examples/playback.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn get_temporary_file_path(name: &str) -> PathBuf {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_buffered_reader_for_path`
[INFO] [stderr]   --> examples/playback.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn get_buffered_reader_for_path(path: &Path) -> io::Result<BufReader<File>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_buffered_writer_for_path`
[INFO] [stderr]   --> examples/playback.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn get_buffered_writer_for_path(path: &Path) -> io::Result<BufWriter<File>> {    
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_test_sine_wave`
[INFO] [stderr]   --> examples/playback.rs:98:1
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn write_test_sine_wave<T>(writer: T, hz: u32, scale: DecibelRatio<f32>) where T: Write + Seek {    
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sine_wave`
[INFO] [stderr]    --> examples/playback.rs:108:1
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn sine_wave(n: u32, hz: u32, scale: DecibelRatio<f32>, sample_rate: u32) -> f32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `"docker" "inspect" "8663c3628d14f45dd9ca2bac516a0006528214dfe84bc0b383c846f7750e77f1"`
[INFO] running `"docker" "rm" "-f" "8663c3628d14f45dd9ca2bac516a0006528214dfe84bc0b383c846f7750e77f1"`
[INFO] [stdout] 8663c3628d14f45dd9ca2bac516a0006528214dfe84bc0b383c846f7750e77f1