Dec 18 18:14:22.982 INFO checking beep-0.2.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:14:22.982 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/beep/0.2.1:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 18:14:23.201 INFO [stdout] c2575ce672d49f6ae00f65b4afaad3bbc923bd89d4f536f50cd3b4ca05fdecbc
Dec 18 18:14:23.203 INFO running `"docker" "start" "-a" "c2575ce672d49f6ae00f65b4afaad3bbc923bd89d4f536f50cd3b4ca05fdecbc"`
Dec 18 18:14:24.324 INFO [stderr]     Checking beep v0.2.1 (/opt/crater/workdir)
Dec 18 18:14:25.317 INFO [stderr] warning: unused variable: `F`
Dec 18 18:14:25.317 INFO [stderr]   --> examples/song.rs:13:7
Dec 18 18:14:25.317 INFO [stderr]    |
Dec 18 18:14:25.317 INFO [stderr] 13 |   let F = Hertz::new(2673.0f64);
Dec 18 18:14:25.317 INFO [stderr]    |       ^ help: consider using `_F` instead
Dec 18 18:14:25.317 INFO [stderr]    |
Dec 18 18:14:25.317 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 18:14:25.317 INFO [stderr] 
Dec 18 18:14:25.321 INFO [stderr] warning: variable `C` should have a snake case name such as `c`
Dec 18 18:14:25.321 INFO [stderr]   --> examples/song.rs:10:7
Dec 18 18:14:25.321 INFO [stderr]    |
Dec 18 18:14:25.321 INFO [stderr] 10 |   let C = Hertz::new(2093.0f64);
Dec 18 18:14:25.321 INFO [stderr]    |       ^
Dec 18 18:14:25.321 INFO [stderr]    |
Dec 18 18:14:25.322 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 18 18:14:25.322 INFO [stderr] 
Dec 18 18:14:25.322 INFO [stderr] warning: variable `D` should have a snake case name such as `d`
Dec 18 18:14:25.322 INFO [stderr]   --> examples/song.rs:11:7
Dec 18 18:14:25.322 INFO [stderr]    |
Dec 18 18:14:25.322 INFO [stderr] 11 |   let D = Hertz::new(2349.0f64);
Dec 18 18:14:25.322 INFO [stderr]    |       ^
Dec 18 18:14:25.322 INFO [stderr] 
Dec 18 18:14:25.323 INFO [stderr] warning: variable `E` should have a snake case name such as `e`
Dec 18 18:14:25.323 INFO [stderr]   --> examples/song.rs:12:7
Dec 18 18:14:25.323 INFO [stderr]    |
Dec 18 18:14:25.323 INFO [stderr] 12 |   let E = Hertz::new(2673.0f64);
Dec 18 18:14:25.323 INFO [stderr]    |       ^
Dec 18 18:14:25.323 INFO [stderr] 
Dec 18 18:14:25.323 INFO [stderr] warning: variable `F` should have a snake case name such as `f`
Dec 18 18:14:25.324 INFO [stderr]   --> examples/song.rs:13:7
Dec 18 18:14:25.324 INFO [stderr]    |
Dec 18 18:14:25.324 INFO [stderr] 13 |   let F = Hertz::new(2673.0f64);
Dec 18 18:14:25.324 INFO [stderr]    |       ^
Dec 18 18:14:25.324 INFO [stderr] 
Dec 18 18:14:25.324 INFO [stderr] warning: variable `G` should have a snake case name such as `g`
Dec 18 18:14:25.325 INFO [stderr]   --> examples/song.rs:14:7
Dec 18 18:14:25.325 INFO [stderr]    |
Dec 18 18:14:25.325 INFO [stderr] 14 |   let G = Hertz::new(3136.0f64);
Dec 18 18:14:25.325 INFO [stderr]    |       ^
Dec 18 18:14:25.325 INFO [stderr] 
Dec 18 18:14:25.371 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
Dec 18 18:14:26.190 INFO running `"docker" "inspect" "c2575ce672d49f6ae00f65b4afaad3bbc923bd89d4f536f50cd3b4ca05fdecbc"`
Dec 18 18:14:26.544 INFO running `"docker" "rm" "-f" "c2575ce672d49f6ae00f65b4afaad3bbc923bd89d4f536f50cd3b4ca05fdecbc"`
Dec 18 18:14:26.667 INFO [stdout] c2575ce672d49f6ae00f65b4afaad3bbc923bd89d4f536f50cd3b4ca05fdecbc