Dec 18 09:37:02.991 INFO checking variable_size_byte_writer-0.1.5 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:37:02.991 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/variable_size_byte_writer/0.1.5:/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 09:37:03.355 INFO [stdout] 8690af00fc20b8ba54d7ce56f5cea6a34f99985c328ff711bac5bc3abf74275f
Dec 18 09:37:03.362 INFO running `"docker" "start" "-a" "8690af00fc20b8ba54d7ce56f5cea6a34f99985c328ff711bac5bc3abf74275f"`
Dec 18 09:37:04.116 INFO [stderr]     Checking typenum_loops v0.2.0
Dec 18 09:37:04.414 INFO [stderr]     Checking variable_size_byte_writer v0.1.5 (/opt/crater/workdir)
Dec 18 09:37:05.420 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:37:05.420 INFO [stderr]   --> benches/benches.rs:11:9
Dec 18 09:37:05.420 INFO [stderr]    |
Dec 18 09:37:05.420 INFO [stderr] 11 |     let mut target = std::io::Cursor::new(vec![]);
Dec 18 09:37:05.420 INFO [stderr]    |         ----^^^^^^
Dec 18 09:37:05.420 INFO [stderr]    |         |
Dec 18 09:37:05.420 INFO [stderr]    |         help: remove this `mut`
Dec 18 09:37:05.420 INFO [stderr]    |
Dec 18 09:37:05.420 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 09:37:05.420 INFO [stderr] 
Dec 18 09:37:05.420 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:37:05.420 INFO [stderr]   --> benches/benches.rs:32:9
Dec 18 09:37:05.420 INFO [stderr]    |
Dec 18 09:37:05.420 INFO [stderr] 32 |     let mut target = std::io::Cursor::new(vec![]);
Dec 18 09:37:05.420 INFO [stderr]    |         ----^^^^^^
Dec 18 09:37:05.420 INFO [stderr]    |         |
Dec 18 09:37:05.420 INFO [stderr]    |         help: remove this `mut`
Dec 18 09:37:05.420 INFO [stderr] 
Dec 18 09:37:05.420 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:37:05.420 INFO [stderr]   --> benches/benches.rs:53:9
Dec 18 09:37:05.420 INFO [stderr]    |
Dec 18 09:37:05.420 INFO [stderr] 53 |     let mut target = std::io::Cursor::new(vec![]);
Dec 18 09:37:05.420 INFO [stderr]    |         ----^^^^^^
Dec 18 09:37:05.420 INFO [stderr]    |         |
Dec 18 09:37:05.420 INFO [stderr]    |         help: remove this `mut`
Dec 18 09:37:05.420 INFO [stderr] 
Dec 18 09:37:05.458 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 18 09:37:06.146 INFO running `"docker" "inspect" "8690af00fc20b8ba54d7ce56f5cea6a34f99985c328ff711bac5bc3abf74275f"`
Dec 18 09:37:06.480 INFO running `"docker" "rm" "-f" "8690af00fc20b8ba54d7ce56f5cea6a34f99985c328ff711bac5bc3abf74275f"`
Dec 18 09:37:06.836 INFO [stdout] 8690af00fc20b8ba54d7ce56f5cea6a34f99985c328ff711bac5bc3abf74275f