Dec 05 01:25:51.512 INFO checking LothTikar/rusty_playlist_maker against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 01:25:51.512 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 01:25:52.182 INFO [stdout] 2f4e30b68c4258140ce760066b8a0c69b33788a054bb59e51d1606490db9d583
Dec 05 01:25:52.184 INFO running `"docker" "start" "-a" "2f4e30b68c4258140ce760066b8a0c69b33788a054bb59e51d1606490db9d583"`
Dec 05 01:25:54.363 INFO [stderr] usermod: no changes
Dec 05 01:25:54.451 INFO [stderr]     Checking memchr v2.0.2
Dec 05 01:25:54.849 INFO [stderr]     Checking csv-core v0.1.4
Dec 05 01:25:55.444 INFO [stderr]     Checking csv v1.0.1
Dec 05 01:25:57.095 INFO [stderr]     Checking rusty_playlist_maker v0.1.0 (/source)
Dec 05 01:25:58.371 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 01:25:58.371 INFO [stderr]   --> src/main.rs:65:9
Dec 05 01:25:58.371 INFO [stderr]    |
Dec 05 01:25:58.371 INFO [stderr] 65 |         file.write_all((i + "\n").as_bytes());
Dec 05 01:25:58.371 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:25:58.371 INFO [stderr]    |
Dec 05 01:25:58.371 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:25:58.371 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 01:25:58.371 INFO [stderr] 
Dec 05 01:25:58.371 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 01:25:58.371 INFO [stderr]   --> src/main.rs:72:13
Dec 05 01:25:58.371 INFO [stderr]    |
Dec 05 01:25:58.371 INFO [stderr] 72 |             file.write_all(format!("{}\n", i).as_bytes());
Dec 05 01:25:58.371 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:25:58.371 INFO [stderr]    |
Dec 05 01:25:58.371 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 01:25:58.371 INFO [stderr] 
Dec 05 01:25:58.615 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 01:25:58.615 INFO [stderr]   --> src/main.rs:65:9
Dec 05 01:25:58.615 INFO [stderr]    |
Dec 05 01:25:58.615 INFO [stderr] 65 |         file.write_all((i + "\n").as_bytes());
Dec 05 01:25:58.615 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:25:58.615 INFO [stderr]    |
Dec 05 01:25:58.615 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:25:58.615 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 01:25:58.615 INFO [stderr] 
Dec 05 01:25:58.615 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 01:25:58.615 INFO [stderr]   --> src/main.rs:72:13
Dec 05 01:25:58.615 INFO [stderr]    |
Dec 05 01:25:58.615 INFO [stderr] 72 |             file.write_all(format!("{}\n", i).as_bytes());
Dec 05 01:25:58.615 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:25:58.615 INFO [stderr]    |
Dec 05 01:25:58.615 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 01:25:58.615 INFO [stderr] 
Dec 05 01:25:58.644 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.25s
Dec 05 01:25:58.647 INFO [stderr] su: No module specific data is present
Dec 05 01:25:59.492 INFO running `"docker" "inspect" "2f4e30b68c4258140ce760066b8a0c69b33788a054bb59e51d1606490db9d583"`
Dec 05 01:25:59.775 INFO running `"docker" "rm" "-f" "2f4e30b68c4258140ce760066b8a0c69b33788a054bb59e51d1606490db9d583"`
Dec 05 01:26:00.187 INFO [stdout] 2f4e30b68c4258140ce760066b8a0c69b33788a054bb59e51d1606490db9d583