Dec 18 08:28:27.605 INFO checking Axect/Music_Tournament against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:28:27.605 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/Axect/Music_Tournament:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:28:27.881 INFO [stdout] 22fb914adfcde4ca619def91957d05a1a7dcd6c17f829fa8b3453e628af3922f
Dec 18 08:28:27.883 INFO running `"docker" "start" "-a" "22fb914adfcde4ca619def91957d05a1a7dcd6c17f829fa8b3453e628af3922f"`
Dec 18 08:28:29.080 INFO [stderr]     Checking Music_Tournament v0.1.0 (/opt/crater/workdir)
Dec 18 08:28:29.344 INFO [stderr] warning: unused import: `std::env`
Dec 18 08:28:29.344 INFO [stderr]  --> src/main.rs:3:5
Dec 18 08:28:29.344 INFO [stderr]   |
Dec 18 08:28:29.344 INFO [stderr] 3 | use std::env;
Dec 18 08:28:29.344 INFO [stderr]   |     ^^^^^^^^
Dec 18 08:28:29.344 INFO [stderr]   |
Dec 18 08:28:29.344 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:28:29.344 INFO [stderr] 
Dec 18 08:28:29.344 INFO [stderr] warning: unused import: `DirEntry`
Dec 18 08:28:29.344 INFO [stderr]  --> src/main.rs:7:21
Dec 18 08:28:29.344 INFO [stderr]   |
Dec 18 08:28:29.344 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 18 08:28:29.344 INFO [stderr]   |                     ^^^^^^^^
Dec 18 08:28:29.344 INFO [stderr] 
Dec 18 08:28:29.364 INFO [stderr] warning: unused import: `std::env`
Dec 18 08:28:29.364 INFO [stderr]  --> src/main.rs:3:5
Dec 18 08:28:29.364 INFO [stderr]   |
Dec 18 08:28:29.364 INFO [stderr] 3 | use std::env;
Dec 18 08:28:29.364 INFO [stderr]   |     ^^^^^^^^
Dec 18 08:28:29.364 INFO [stderr]   |
Dec 18 08:28:29.364 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:28:29.364 INFO [stderr] 
Dec 18 08:28:29.364 INFO [stderr] warning: unused import: `DirEntry`
Dec 18 08:28:29.364 INFO [stderr]  --> src/main.rs:7:21
Dec 18 08:28:29.364 INFO [stderr]   |
Dec 18 08:28:29.364 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 18 08:28:29.364 INFO [stderr]   |                     ^^^^^^^^
Dec 18 08:28:29.364 INFO [stderr] 
Dec 18 08:28:29.477 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 18 08:28:29.477 INFO [stderr]   |
Dec 18 08:28:29.477 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 08:28:29.477 INFO [stderr] 
Dec 18 08:28:29.478 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.478 INFO [stderr]   --> src/main.rs:33:9
Dec 18 08:28:29.478 INFO [stderr]    |
Dec 18 08:28:29.478 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 18 08:28:29.478 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.478 INFO [stderr]    |
Dec 18 08:28:29.478 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 08:28:29.478 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.478 INFO [stderr] 
Dec 18 08:28:29.478 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.478 INFO [stderr]   --> src/main.rs:99:13
Dec 18 08:28:29.478 INFO [stderr]    |
Dec 18 08:28:29.478 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 18 08:28:29.478 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.478 INFO [stderr]    |
Dec 18 08:28:29.478 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.478 INFO [stderr] 
Dec 18 08:28:29.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.480 INFO [stderr]    --> src/main.rs:101:13
Dec 18 08:28:29.480 INFO [stderr]     |
Dec 18 08:28:29.480 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 18 08:28:29.480 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.480 INFO [stderr]     |
Dec 18 08:28:29.480 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.480 INFO [stderr] 
Dec 18 08:28:29.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.480 INFO [stderr]    --> src/main.rs:110:5
Dec 18 08:28:29.480 INFO [stderr]     |
Dec 18 08:28:29.480 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 18 08:28:29.480 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.480 INFO [stderr]     |
Dec 18 08:28:29.480 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.480 INFO [stderr] 
Dec 18 08:28:29.480 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 18 08:28:29.480 INFO [stderr]   |
Dec 18 08:28:29.480 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 08:28:29.480 INFO [stderr] 
Dec 18 08:28:29.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.480 INFO [stderr]   --> src/main.rs:33:9
Dec 18 08:28:29.480 INFO [stderr]    |
Dec 18 08:28:29.480 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 18 08:28:29.481 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.481 INFO [stderr]    |
Dec 18 08:28:29.481 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 08:28:29.481 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.481 INFO [stderr] 
Dec 18 08:28:29.481 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.481 INFO [stderr]   --> src/main.rs:99:13
Dec 18 08:28:29.481 INFO [stderr]    |
Dec 18 08:28:29.481 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 18 08:28:29.481 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.481 INFO [stderr]    |
Dec 18 08:28:29.481 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.481 INFO [stderr] 
Dec 18 08:28:29.481 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.481 INFO [stderr]    --> src/main.rs:101:13
Dec 18 08:28:29.481 INFO [stderr]     |
Dec 18 08:28:29.481 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 18 08:28:29.481 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.481 INFO [stderr]     |
Dec 18 08:28:29.481 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.481 INFO [stderr] 
Dec 18 08:28:29.481 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:28:29.481 INFO [stderr]    --> src/main.rs:110:5
Dec 18 08:28:29.481 INFO [stderr]     |
Dec 18 08:28:29.481 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 18 08:28:29.481 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:28:29.481 INFO [stderr]     |
Dec 18 08:28:29.487 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:28:29.487 INFO [stderr] 
Dec 18 08:28:29.524 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 18 08:28:30.200 INFO running `"docker" "inspect" "22fb914adfcde4ca619def91957d05a1a7dcd6c17f829fa8b3453e628af3922f"`
Dec 18 08:28:30.506 INFO running `"docker" "rm" "-f" "22fb914adfcde4ca619def91957d05a1a7dcd6c17f829fa8b3453e628af3922f"`
Dec 18 08:28:30.828 INFO [stdout] 22fb914adfcde4ca619def91957d05a1a7dcd6c17f829fa8b3453e628af3922f