Dec 18 15:00:47.613 INFO checking imagefmt-4.0.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 15:00:47.613 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/imagefmt/4.0.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 15:00:48.083 INFO [stdout] cbcd21f00a558c8902d42eaf05b51a6feae39ebaacc8623f1be09fea06fa029c
Dec 18 15:00:48.084 INFO running `"docker" "start" "-a" "cbcd21f00a558c8902d42eaf05b51a6feae39ebaacc8623f1be09fea06fa029c"`
Dec 18 15:00:50.078 INFO [stderr]     Checking imagefmt v4.0.0 (/opt/crater/workdir)
Dec 18 15:00:51.903 INFO [stderr] warning: unused import: `Write`
Dec 18 15:00:51.904 INFO [stderr]   --> src/lib.rs:35:27
Dec 18 15:00:51.904 INFO [stderr]    |
Dec 18 15:00:51.904 INFO [stderr] 35 | use std::io::{self, Read, Write, BufReader, BufWriter, ErrorKind, Seek, SeekFrom};
Dec 18 15:00:51.904 INFO [stderr]    |                           ^^^^^
Dec 18 15:00:51.904 INFO [stderr]    |
Dec 18 15:00:51.904 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 15:00:51.904 INFO [stderr] 
Dec 18 15:00:52.264 INFO [stderr] warning: unused import: `Write`
Dec 18 15:00:52.264 INFO [stderr]   --> src/lib.rs:35:27
Dec 18 15:00:52.264 INFO [stderr]    |
Dec 18 15:00:52.264 INFO [stderr] 35 | use std::io::{self, Read, Write, BufReader, BufWriter, ErrorKind, Seek, SeekFrom};
Dec 18 15:00:52.264 INFO [stderr]    |                           ^^^^^
Dec 18 15:00:52.264 INFO [stderr]    |
Dec 18 15:00:52.264 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 15:00:52.264 INFO [stderr] 
Dec 18 15:00:52.845 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.83s
Dec 18 15:00:53.670 INFO running `"docker" "inspect" "cbcd21f00a558c8902d42eaf05b51a6feae39ebaacc8623f1be09fea06fa029c"`
Dec 18 15:00:54.032 INFO running `"docker" "rm" "-f" "cbcd21f00a558c8902d42eaf05b51a6feae39ebaacc8623f1be09fea06fa029c"`
Dec 18 15:00:54.396 INFO [stdout] cbcd21f00a558c8902d42eaf05b51a6feae39ebaacc8623f1be09fea06fa029c