Dec 05 07:19:32.450 INFO checking rustils-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 07:19:32.451 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 07:19:32.682 INFO [stdout] aa35e38b0e7ec78a5b36d0f986090c5f2d5b77eec777091fb3aebd8e148d5947
Dec 05 07:19:32.688 INFO running `"docker" "start" "-a" "aa35e38b0e7ec78a5b36d0f986090c5f2d5b77eec777091fb3aebd8e148d5947"`
Dec 05 07:19:33.298 INFO [stderr] usermod: no changes
Dec 05 07:19:33.363 INFO [stderr]     Checking rustils v0.1.0 (/source)
Dec 05 07:19:35.563 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 07:19:35.563 INFO [stderr]    --> src/string.rs:350:9
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr] 350 |         temp.drain(len-search.len()..len).collect::<String>();
Dec 05 07:19:35.563 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 07:19:35.563 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 07:19:35.563 INFO [stderr] 
Dec 05 07:19:35.563 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 07:19:35.563 INFO [stderr]    --> src/string.rs:363:9
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr] 363 |         temp.drain(..search.len()).collect::<String>();
Dec 05 07:19:35.563 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 07:19:35.563 INFO [stderr] 
Dec 05 07:19:35.563 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 07:19:35.563 INFO [stderr]    --> src/string.rs:350:9
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr] 350 |         temp.drain(len-search.len()..len).collect::<String>();
Dec 05 07:19:35.563 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:19:35.563 INFO [stderr]     |
Dec 05 07:19:35.563 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 07:19:35.563 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 07:19:35.563 INFO [stderr] 
Dec 05 07:19:35.564 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 07:19:35.564 INFO [stderr]    --> src/string.rs:363:9
Dec 05 07:19:35.564 INFO [stderr]     |
Dec 05 07:19:35.564 INFO [stderr] 363 |         temp.drain(..search.len()).collect::<String>();
Dec 05 07:19:35.564 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:19:35.564 INFO [stderr]     |
Dec 05 07:19:35.564 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 07:19:35.564 INFO [stderr] 
Dec 05 07:19:44.017 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.72s
Dec 05 07:19:44.028 INFO [stderr] su: No module specific data is present
Dec 05 07:19:44.546 INFO running `"docker" "inspect" "aa35e38b0e7ec78a5b36d0f986090c5f2d5b77eec777091fb3aebd8e148d5947"`
Dec 05 07:19:44.770 INFO running `"docker" "rm" "-f" "aa35e38b0e7ec78a5b36d0f986090c5f2d5b77eec777091fb3aebd8e148d5947"`
Dec 05 07:19:45.063 INFO [stdout] aa35e38b0e7ec78a5b36d0f986090c5f2d5b77eec777091fb3aebd8e148d5947