Dec 18 08:06:48.186 INFO checking ColeGitHub/Rust_Minigrep against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:06:48.186 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/ColeGitHub/Rust_Minigrep:/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 08:06:48.510 INFO [stdout] 5b4721a7d0c04c04338db0a94073850d942f93498672be55223302c46b340d04
Dec 18 08:06:48.512 INFO running `"docker" "start" "-a" "5b4721a7d0c04c04338db0a94073850d942f93498672be55223302c46b340d04"`
Dec 18 08:06:50.008 INFO [stderr]     Checking minigrep v0.1.0 (/opt/crater/workdir)
Dec 18 08:06:50.296 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 08:06:50.296 INFO [stderr]  --> src/lib.rs:3:5
Dec 18 08:06:50.296 INFO [stderr]   |
Dec 18 08:06:50.296 INFO [stderr] 3 | use std::io::prelude::*;
Dec 18 08:06:50.296 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:50.296 INFO [stderr]   |
Dec 18 08:06:50.296 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:06:50.296 INFO [stderr] 
Dec 18 08:06:50.372 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 08:06:50.372 INFO [stderr]  --> src/lib.rs:3:5
Dec 18 08:06:50.372 INFO [stderr]   |
Dec 18 08:06:50.372 INFO [stderr] 3 | use std::io::prelude::*;
Dec 18 08:06:50.372 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:50.372 INFO [stderr]   |
Dec 18 08:06:50.372 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:06:50.373 INFO [stderr] 
Dec 18 08:06:50.817 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Dec 18 08:06:51.392 INFO running `"docker" "inspect" "5b4721a7d0c04c04338db0a94073850d942f93498672be55223302c46b340d04"`
Dec 18 08:06:51.592 INFO running `"docker" "rm" "-f" "5b4721a7d0c04c04338db0a94073850d942f93498672be55223302c46b340d04"`
Dec 18 08:06:51.689 INFO [stdout] 5b4721a7d0c04c04338db0a94073850d942f93498672be55223302c46b340d04