Nov 30 16:12:08.222 INFO checking rustils-0.1.0 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 16:12:08.222 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-1/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 16:12:08.712 INFO [stdout] f3b77c5d8851546a99109ae48514b150f0a68799e141a2a73c0d633933eea465
Nov 30 16:12:08.718 INFO running `"docker" "start" "-a" "f3b77c5d8851546a99109ae48514b150f0a68799e141a2a73c0d633933eea465"`
Nov 30 16:12:09.657 INFO [stderr] usermod: no changes
Nov 30 16:12:09.748 INFO [stderr]     Checking rustils v0.1.0 (/source)
Nov 30 16:12:11.580 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 16:12:11.580 INFO [stderr]    --> src/string.rs:350:9
Nov 30 16:12:11.580 INFO [stderr]     |
Nov 30 16:12:11.580 INFO [stderr] 350 |         temp.drain(len-search.len()..len).collect::<String>();
Nov 30 16:12:11.580 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:12:11.580 INFO [stderr]     |
Nov 30 16:12:11.580 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 16:12:11.580 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 16:12:11.580 INFO [stderr] 
Nov 30 16:12:11.580 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 16:12:11.580 INFO [stderr]    --> src/string.rs:363:9
Nov 30 16:12:11.580 INFO [stderr]     |
Nov 30 16:12:11.580 INFO [stderr] 363 |         temp.drain(..search.len()).collect::<String>();
Nov 30 16:12:11.580 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:12:11.580 INFO [stderr]     |
Nov 30 16:12:11.580 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 16:12:11.580 INFO [stderr] 
Nov 30 16:12:12.220 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 16:12:12.224 INFO [stderr]    --> src/string.rs:350:9
Nov 30 16:12:12.224 INFO [stderr]     |
Nov 30 16:12:12.224 INFO [stderr] 350 |         temp.drain(len-search.len()..len).collect::<String>();
Nov 30 16:12:12.224 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:12:12.240 INFO [stderr]     |
Nov 30 16:12:12.241 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 16:12:12.241 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 16:12:12.241 INFO [stderr] 
Nov 30 16:12:12.241 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 16:12:12.242 INFO [stderr]    --> src/string.rs:363:9
Nov 30 16:12:12.242 INFO [stderr]     |
Nov 30 16:12:12.242 INFO [stderr] 363 |         temp.drain(..search.len()).collect::<String>();
Nov 30 16:12:12.242 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:12:12.242 INFO [stderr]     |
Nov 30 16:12:12.242 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 16:12:12.242 INFO [stderr] 
Nov 30 16:12:20.778 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.10s
Nov 30 16:12:20.790 INFO [stderr] su: No module specific data is present
Nov 30 16:12:21.302 INFO running `"docker" "inspect" "f3b77c5d8851546a99109ae48514b150f0a68799e141a2a73c0d633933eea465"`
Nov 30 16:12:21.650 INFO running `"docker" "rm" "-f" "f3b77c5d8851546a99109ae48514b150f0a68799e141a2a73c0d633933eea465"`
Nov 30 16:12:21.958 INFO [stdout] f3b77c5d8851546a99109ae48514b150f0a68799e141a2a73c0d633933eea465