Dec 12 03:50:01.593 INFO checking Axect/Music_Tournament against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:50:01.593 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 03:50:01.967 INFO [stdout] 9a83b0e8222ce7089fa7497c0905230df433f4c76367d02ec9e6eeb4b845251f
Dec 12 03:50:01.974 INFO running `"docker" "start" "-a" "9a83b0e8222ce7089fa7497c0905230df433f4c76367d02ec9e6eeb4b845251f"`
Dec 12 03:50:03.685 INFO [stderr] usermod: no changes
Dec 12 03:50:03.776 INFO [stderr]     Checking Music_Tournament v0.1.0 (/source)
Dec 12 03:50:04.552 INFO [stderr] warning: unused import: `std::env`
Dec 12 03:50:04.552 INFO [stderr]  --> src/main.rs:3:5
Dec 12 03:50:04.552 INFO [stderr]   |
Dec 12 03:50:04.552 INFO [stderr] 3 | use std::env;
Dec 12 03:50:04.552 INFO [stderr]   |     ^^^^^^^^
Dec 12 03:50:04.552 INFO [stderr]   |
Dec 12 03:50:04.552 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:50:04.552 INFO [stderr] 
Dec 12 03:50:04.552 INFO [stderr] warning: unused import: `DirEntry`
Dec 12 03:50:04.552 INFO [stderr]  --> src/main.rs:7:21
Dec 12 03:50:04.552 INFO [stderr]   |
Dec 12 03:50:04.552 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 12 03:50:04.552 INFO [stderr]   |                     ^^^^^^^^
Dec 12 03:50:04.552 INFO [stderr] 
Dec 12 03:50:04.682 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 12 03:50:04.682 INFO [stderr]   |
Dec 12 03:50:04.682 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 03:50:04.682 INFO [stderr] 
Dec 12 03:50:04.688 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.688 INFO [stderr]   --> src/main.rs:33:9
Dec 12 03:50:04.689 INFO [stderr]    |
Dec 12 03:50:04.689 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 12 03:50:04.689 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.689 INFO [stderr]    |
Dec 12 03:50:04.689 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:50:04.689 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.689 INFO [stderr] 
Dec 12 03:50:04.689 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.689 INFO [stderr]   --> src/main.rs:99:13
Dec 12 03:50:04.689 INFO [stderr]    |
Dec 12 03:50:04.689 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 12 03:50:04.689 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.689 INFO [stderr]    |
Dec 12 03:50:04.689 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.689 INFO [stderr] 
Dec 12 03:50:04.689 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.689 INFO [stderr]    --> src/main.rs:101:13
Dec 12 03:50:04.689 INFO [stderr]     |
Dec 12 03:50:04.689 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 12 03:50:04.689 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.689 INFO [stderr]     |
Dec 12 03:50:04.689 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.689 INFO [stderr] 
Dec 12 03:50:04.689 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.689 INFO [stderr]    --> src/main.rs:110:5
Dec 12 03:50:04.689 INFO [stderr]     |
Dec 12 03:50:04.689 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 12 03:50:04.689 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.690 INFO [stderr]     |
Dec 12 03:50:04.690 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.690 INFO [stderr] 
Dec 12 03:50:04.696 INFO [stderr] warning: unused import: `std::env`
Dec 12 03:50:04.696 INFO [stderr]  --> src/main.rs:3:5
Dec 12 03:50:04.696 INFO [stderr]   |
Dec 12 03:50:04.696 INFO [stderr] 3 | use std::env;
Dec 12 03:50:04.696 INFO [stderr]   |     ^^^^^^^^
Dec 12 03:50:04.696 INFO [stderr]   |
Dec 12 03:50:04.696 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:50:04.696 INFO [stderr] 
Dec 12 03:50:04.696 INFO [stderr] warning: unused import: `DirEntry`
Dec 12 03:50:04.696 INFO [stderr]  --> src/main.rs:7:21
Dec 12 03:50:04.696 INFO [stderr]   |
Dec 12 03:50:04.697 INFO [stderr] 7 | use std::fs::{self, DirEntry, File};
Dec 12 03:50:04.697 INFO [stderr]   |                     ^^^^^^^^
Dec 12 03:50:04.697 INFO [stderr] 
Dec 12 03:50:04.788 INFO [stderr] warning: crate `Music_Tournament` should have a snake case name such as `music_tournament`
Dec 12 03:50:04.788 INFO [stderr]   |
Dec 12 03:50:04.788 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 03:50:04.788 INFO [stderr] 
Dec 12 03:50:04.788 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.788 INFO [stderr]   --> src/main.rs:33:9
Dec 12 03:50:04.788 INFO [stderr]    |
Dec 12 03:50:04.788 INFO [stderr] 33 |         write_mp3_list("save_0.txt", &result);
Dec 12 03:50:04.790 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.790 INFO [stderr]    |
Dec 12 03:50:04.790 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:50:04.790 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.790 INFO [stderr] 
Dec 12 03:50:04.790 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.790 INFO [stderr]   --> src/main.rs:99:13
Dec 12 03:50:04.790 INFO [stderr]    |
Dec 12 03:50:04.790 INFO [stderr] 99 |             write_mp3_list("temp_1.txt", &result2);
Dec 12 03:50:04.790 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.790 INFO [stderr]    |
Dec 12 03:50:04.790 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.790 INFO [stderr] 
Dec 12 03:50:04.790 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.790 INFO [stderr]    --> src/main.rs:101:13
Dec 12 03:50:04.790 INFO [stderr]     |
Dec 12 03:50:04.790 INFO [stderr] 101 |             write_mp3_list("log.txt", &vec![temp_write]);
Dec 12 03:50:04.790 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.790 INFO [stderr]     |
Dec 12 03:50:04.790 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.790 INFO [stderr] 
Dec 12 03:50:04.790 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:50:04.790 INFO [stderr]    --> src/main.rs:110:5
Dec 12 03:50:04.790 INFO [stderr]     |
Dec 12 03:50:04.790 INFO [stderr] 110 |     write_mp3_list("save_1.txt", &result2);
Dec 12 03:50:04.791 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:50:04.791 INFO [stderr]     |
Dec 12 03:50:04.791 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:50:04.791 INFO [stderr] 
Dec 12 03:50:04.824 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
Dec 12 03:50:04.824 INFO [stderr] su: No module specific data is present
Dec 12 03:50:05.428 INFO running `"docker" "inspect" "9a83b0e8222ce7089fa7497c0905230df433f4c76367d02ec9e6eeb4b845251f"`
Dec 12 03:50:05.756 INFO running `"docker" "rm" "-f" "9a83b0e8222ce7089fa7497c0905230df433f4c76367d02ec9e6eeb4b845251f"`
Dec 12 03:50:05.955 INFO [stdout] 9a83b0e8222ce7089fa7497c0905230df433f4c76367d02ec9e6eeb4b845251f