Dec 12 03:49:58.023 INFO checking Axect/Music_Tournament against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:49:58.023 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 03:49:58.320 INFO [stdout] 208ee485c63f0c8cfcef0eb1d48fd9101b1e5af4a66f6439fcbe4f307276da7e
Dec 12 03:49:58.326 INFO running `"docker" "start" "-a" "208ee485c63f0c8cfcef0eb1d48fd9101b1e5af4a66f6439fcbe4f307276da7e"`
Dec 12 03:49:58.996 INFO [stderr] usermod: no changes
Dec 12 03:49:59.084 INFO [stderr]     Checking Music_Tournament v0.1.0 (/source)
Dec 12 03:49:59.872 INFO [stderr] warning: unused import: `std::env`
Dec 12 03:49:59.872 INFO [stderr]  --> src/main.rs:3:5
Dec 12 03:49:59.872 INFO [stderr]   |
Dec 12 03:49:59.872 INFO [stderr] 3 | use std::env;
Dec 12 03:49:59.872 INFO [stderr]   |     ^^^^^^^^
Dec 12 03:49:59.872 INFO [stderr]   |
Dec 12 03:49:59.872 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:49:59.872 INFO [stderr] 
Dec 12 03:49:59.872 INFO [stderr] warning: unused import: `DirEntry`
Dec 12 03:49:59.872 INFO [stderr]  --> src/main.rs:7:21
Dec 12 03:49:59.872 INFO [stderr]   |
Dec 12 03:49:59.872 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 12 03:49:59.872 INFO [stderr]   |                     ^^^^^^^^
Dec 12 03:49:59.872 INFO [stderr] 
Dec 12 03:50:00.032 INFO [stderr] warning: unused import: `std::env`
Dec 12 03:50:00.032 INFO [stderr]  --> src/main.rs:3:5
Dec 12 03:50:00.032 INFO [stderr]   |
Dec 12 03:50:00.032 INFO [stderr] 3 | use std::env;
Dec 12 03:50:00.032 INFO [stderr]   |     ^^^^^^^^
Dec 12 03:50:00.032 INFO [stderr]   |
Dec 12 03:50:00.032 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:50:00.032 INFO [stderr] 
Dec 12 03:50:00.032 INFO [stderr] warning: unused import: `DirEntry`
Dec 12 03:50:00.032 INFO [stderr]  --> src/main.rs:7:21
Dec 12 03:50:00.032 INFO [stderr]   |
Dec 12 03:50:00.032 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 12 03:50:00.032 INFO [stderr]   |                     ^^^^^^^^
Dec 12 03:50:00.032 INFO [stderr] 
Dec 12 03:50:00.086 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 12 03:50:00.086 INFO [stderr]   |
Dec 12 03:50:00.086 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 03:50:00.086 INFO [stderr] 
Dec 12 03:50:00.086 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.086 INFO [stderr]   --> src/main.rs:33:9
Dec 12 03:50:00.086 INFO [stderr]    |
Dec 12 03:50:00.086 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 12 03:50:00.086 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.086 INFO [stderr]    |
Dec 12 03:50:00.086 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:50:00.086 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.086 INFO [stderr] 
Dec 12 03:50:00.086 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.086 INFO [stderr]   --> src/main.rs:99:13
Dec 12 03:50:00.087 INFO [stderr]    |
Dec 12 03:50:00.087 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 12 03:50:00.087 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.087 INFO [stderr]    |
Dec 12 03:50:00.087 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.087 INFO [stderr] 
Dec 12 03:50:00.087 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.087 INFO [stderr]    --> src/main.rs:101:13
Dec 12 03:50:00.087 INFO [stderr]     |
Dec 12 03:50:00.087 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 12 03:50:00.087 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.087 INFO [stderr]     |
Dec 12 03:50:00.087 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.087 INFO [stderr] 
Dec 12 03:50:00.087 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.087 INFO [stderr]    --> src/main.rs:110:5
Dec 12 03:50:00.087 INFO [stderr]     |
Dec 12 03:50:00.087 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 12 03:50:00.087 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.087 INFO [stderr]     |
Dec 12 03:50:00.087 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.087 INFO [stderr] 
Dec 12 03:50:00.149 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 12 03:50:00.149 INFO [stderr]   |
Dec 12 03:50:00.149 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 03:50:00.149 INFO [stderr] 
Dec 12 03:50:00.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.150 INFO [stderr]   --> src/main.rs:33:9
Dec 12 03:50:00.150 INFO [stderr]    |
Dec 12 03:50:00.150 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 12 03:50:00.150 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.150 INFO [stderr]    |
Dec 12 03:50:00.150 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:50:00.150 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.150 INFO [stderr] 
Dec 12 03:50:00.150 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.150 INFO [stderr]   --> src/main.rs:99:13
Dec 12 03:50:00.150 INFO [stderr]    |
Dec 12 03:50:00.150 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 12 03:50:00.150 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.150 INFO [stderr]    |
Dec 12 03:50:00.150 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.150 INFO [stderr] 
Dec 12 03:50:00.150 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.150 INFO [stderr]    --> src/main.rs:101:13
Dec 12 03:50:00.150 INFO [stderr]     |
Dec 12 03:50:00.150 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 12 03:50:00.150 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.150 INFO [stderr]     |
Dec 12 03:50:00.150 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.151 INFO [stderr] 
Dec 12 03:50:00.151 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:00.151 INFO [stderr]    --> src/main.rs:110:5
Dec 12 03:50:00.151 INFO [stderr]     |
Dec 12 03:50:00.151 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 12 03:50:00.151 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:00.151 INFO [stderr]     |
Dec 12 03:50:00.151 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:00.151 INFO [stderr] 
Dec 12 03:50:00.173 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
Dec 12 03:50:00.176 INFO [stderr] su: No module specific data is present
Dec 12 03:50:00.880 INFO running `"docker" "inspect" "208ee485c63f0c8cfcef0eb1d48fd9101b1e5af4a66f6439fcbe4f307276da7e"`
Dec 12 03:50:01.142 INFO running `"docker" "rm" "-f" "208ee485c63f0c8cfcef0eb1d48fd9101b1e5af4a66f6439fcbe4f307276da7e"`
Dec 12 03:50:01.440 INFO [stdout] 208ee485c63f0c8cfcef0eb1d48fd9101b1e5af4a66f6439fcbe4f307276da7e