Dec 17 23:13:06.288 INFO checking howeih/Day-41-Union-Find against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 23:13:06.288 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/howeih/Day-41-Union-Find:/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 17 23:13:06.660 INFO [stdout] 5589450f890fd11bd494e6aab0bbd90d5713a339ce160797e6e750a8b792f7a1
Dec 17 23:13:06.664 INFO running `"docker" "start" "-a" "5589450f890fd11bd494e6aab0bbd90d5713a339ce160797e6e750a8b792f7a1"`
Dec 17 23:13:07.976 INFO [stderr]     Checking union_find v0.1.0 (/opt/crater/workdir)
Dec 17 23:13:08.128 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 17 23:13:08.128 INFO [stderr]  --> src/main.rs:2:5
Dec 17 23:13:08.128 INFO [stderr]   |
Dec 17 23:13:08.128 INFO [stderr] 2 | use std::iter::Iterator;
Dec 17 23:13:08.128 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 23:13:08.128 INFO [stderr]   |
Dec 17 23:13:08.128 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:13:08.128 INFO [stderr] 
Dec 17 23:13:08.211 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 17 23:13:08.211 INFO [stderr]  --> src/main.rs:2:5
Dec 17 23:13:08.211 INFO [stderr]   |
Dec 17 23:13:08.211 INFO [stderr] 2 | use std::iter::Iterator;
Dec 17 23:13:08.211 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 23:13:08.211 INFO [stderr]   |
Dec 17 23:13:08.211 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:13:08.211 INFO [stderr] 
Dec 17 23:13:08.271 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
Dec 17 23:13:08.726 INFO running `"docker" "inspect" "5589450f890fd11bd494e6aab0bbd90d5713a339ce160797e6e750a8b792f7a1"`
Dec 17 23:13:08.866 INFO running `"docker" "rm" "-f" "5589450f890fd11bd494e6aab0bbd90d5713a339ce160797e6e750a8b792f7a1"`
Dec 17 23:13:08.962 INFO [stdout] 5589450f890fd11bd494e6aab0bbd90d5713a339ce160797e6e750a8b792f7a1