Dec 11 17:21:49.680 INFO checking howeih/Day-41-Union-Find against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 17:21:49.680 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 11 17:21:50.108 INFO [stdout] 752e5651d22a170d03307ff48f8080e26bedd1c9b10cac57d802185fbd7c0d94
Dec 11 17:21:50.110 INFO running `"docker" "start" "-a" "752e5651d22a170d03307ff48f8080e26bedd1c9b10cac57d802185fbd7c0d94"`
Dec 11 17:21:50.688 INFO [stderr] usermod: no changes
Dec 11 17:21:50.727 INFO [stderr]     Checking union_find v0.1.0 (/source)
Dec 11 17:21:51.000 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 11 17:21:51.000 INFO [stderr]  --> src/main.rs:2:5
Dec 11 17:21:51.000 INFO [stderr]   |
Dec 11 17:21:51.000 INFO [stderr] 2 | use std::iter::Iterator;
Dec 11 17:21:51.000 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 17:21:51.000 INFO [stderr]   |
Dec 11 17:21:51.000 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 17:21:51.000 INFO [stderr] 
Dec 11 17:21:51.076 INFO [stderr] warning: unused import: `std::iter::Iterator`
Dec 11 17:21:51.076 INFO [stderr]  --> src/main.rs:2:5
Dec 11 17:21:51.076 INFO [stderr]   |
Dec 11 17:21:51.076 INFO [stderr] 2 | use std::iter::Iterator;
Dec 11 17:21:51.076 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 17:21:51.076 INFO [stderr]   |
Dec 11 17:21:51.076 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 17:21:51.076 INFO [stderr] 
Dec 11 17:21:51.126 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 11 17:21:51.132 INFO [stderr] su: No module specific data is present
Dec 11 17:21:51.842 INFO running `"docker" "inspect" "752e5651d22a170d03307ff48f8080e26bedd1c9b10cac57d802185fbd7c0d94"`
Dec 11 17:21:51.971 INFO running `"docker" "rm" "-f" "752e5651d22a170d03307ff48f8080e26bedd1c9b10cac57d802185fbd7c0d94"`
Dec 11 17:21:52.179 INFO [stdout] 752e5651d22a170d03307ff48f8080e26bedd1c9b10cac57d802185fbd7c0d94