Dec 19 16:01:19.109 INFO checking howeih/Day-41-Union-Find against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:01:19.109 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:01:19.586 INFO [stdout] d2d69288df86a36671343c4501d3548d44f428c8c46d8e9b7f1833165296b446
Dec 19 16:01:19.590 INFO running `"docker" "start" "-a" "d2d69288df86a36671343c4501d3548d44f428c8c46d8e9b7f1833165296b446"`
Dec 19 16:01:20.933 INFO [stderr]     Checking union_find v0.1.0 (/opt/crater/workdir)
Dec 19 16:01:21.127 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 19 16:01:21.127 INFO [stderr]  --> src/main.rs:2:5
Dec 19 16:01:21.127 INFO [stderr]   |
Dec 19 16:01:21.127 INFO [stderr] 2 | use std::iter::Iterator;
Dec 19 16:01:21.127 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 16:01:21.127 INFO [stderr]   |
Dec 19 16:01:21.132 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:01:21.132 INFO [stderr] 
Dec 19 16:01:21.196 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 19 16:01:21.196 INFO [stderr]  --> src/main.rs:2:5
Dec 19 16:01:21.196 INFO [stderr]   |
Dec 19 16:01:21.196 INFO [stderr] 2 | use std::iter::Iterator;
Dec 19 16:01:21.196 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 16:01:21.196 INFO [stderr]   |
Dec 19 16:01:21.196 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:01:21.196 INFO [stderr] 
Dec 19 16:01:21.285 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
Dec 19 16:01:21.650 INFO running `"docker" "inspect" "d2d69288df86a36671343c4501d3548d44f428c8c46d8e9b7f1833165296b446"`
Dec 19 16:01:21.770 INFO running `"docker" "rm" "-f" "d2d69288df86a36671343c4501d3548d44f428c8c46d8e9b7f1833165296b446"`
Dec 19 16:01:21.901 INFO [stdout] d2d69288df86a36671343c4501d3548d44f428c8c46d8e9b7f1833165296b446