Dec 18 10:19:48.925 INFO checking thincollections-0.5.3 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:19:48.925 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/thincollections/0.5.3:/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 18 10:19:49.521 INFO [stdout] 8e9856fc856178b906fa91ac30807d1721ee81a0a564fc5938bb10a79790049f
Dec 18 10:19:49.523 INFO running `"docker" "start" "-a" "8e9856fc856178b906fa91ac30807d1721ee81a0a564fc5938bb10a79790049f"`
Dec 18 10:19:51.319 INFO [stderr]     Checking thincollections v0.5.3 (/opt/crater/workdir)
Dec 18 10:19:51.337 INFO [stderr]     Checking xoshiro v0.0.4
Dec 18 10:19:51.341 INFO [stderr]     Checking num v0.2.0
Dec 18 10:19:53.367 INFO [stderr] warning: unused import: `super::ThinSentinel`
Dec 18 10:19:53.367 INFO [stderr]     --> src/thin_map.rs:2135:9
Dec 18 10:19:53.367 INFO [stderr]      |
Dec 18 10:19:53.367 INFO [stderr] 2135 |     use super::ThinSentinel;
Dec 18 10:19:53.367 INFO [stderr]      |         ^^^^^^^^^^^^^^^^^^^
Dec 18 10:19:53.367 INFO [stderr]      |
Dec 18 10:19:53.367 INFO [stderr]      = note: #[warn(unused_imports)] on by default
Dec 18 10:19:53.367 INFO [stderr] 
Dec 18 10:19:54.165 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:19:54.165 INFO [stderr]     --> src/thin_vec.rs:1244:29
Dec 18 10:19:54.165 INFO [stderr]      |
Dec 18 10:19:54.165 INFO [stderr] 1244 |     pub fn into_boxed_slice(mut self) -> Box<[T]> {
Dec 18 10:19:54.165 INFO [stderr]      |                             ----^^^^
Dec 18 10:19:54.165 INFO [stderr]      |                             |
Dec 18 10:19:54.165 INFO [stderr]      |                             help: remove this `mut`
Dec 18 10:19:54.165 INFO [stderr]      |
Dec 18 10:19:54.165 INFO [stderr]      = note: #[warn(unused_mut)] on by default
Dec 18 10:19:54.165 INFO [stderr] 
Dec 18 10:19:55.928 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:19:55.928 INFO [stderr]     --> src/thin_vec.rs:1244:29
Dec 18 10:19:55.928 INFO [stderr]      |
Dec 18 10:19:55.928 INFO [stderr] 1244 |     pub fn into_boxed_slice(mut self) -> Box<[T]> {
Dec 18 10:19:55.928 INFO [stderr]      |                             ----^^^^
Dec 18 10:19:55.928 INFO [stderr]      |                             |
Dec 18 10:19:55.928 INFO [stderr]      |                             help: remove this `mut`
Dec 18 10:19:55.928 INFO [stderr]      |
Dec 18 10:19:55.928 INFO [stderr]      = note: #[warn(unused_mut)] on by default
Dec 18 10:19:55.928 INFO [stderr] 
Dec 18 10:19:56.122 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
Dec 18 10:19:56.418 INFO running `"docker" "inspect" "8e9856fc856178b906fa91ac30807d1721ee81a0a564fc5938bb10a79790049f"`
Dec 18 10:19:56.625 INFO running `"docker" "rm" "-f" "8e9856fc856178b906fa91ac30807d1721ee81a0a564fc5938bb10a79790049f"`
Dec 18 10:19:56.769 INFO [stdout] 8e9856fc856178b906fa91ac30807d1721ee81a0a564fc5938bb10a79790049f