Dec 18 08:06:49.151 INFO checking ColeGitHub/Rust_Minigrep against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:06:49.151 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/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:06:49.607 INFO [stdout] 350f5776aac13c002c510e65f6796701936e32769844ddeb58eef019df75c7a8
Dec 18 08:06:49.609 INFO running `"docker" "start" "-a" "350f5776aac13c002c510e65f6796701936e32769844ddeb58eef019df75c7a8"`
Dec 18 08:06:50.955 INFO [stderr]     Checking minigrep v0.1.0 (/opt/crater/workdir)
Dec 18 08:06:51.217 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 08:06:51.217 INFO [stderr]  --> src/lib.rs:3:5
Dec 18 08:06:51.217 INFO [stderr]   |
Dec 18 08:06:51.217 INFO [stderr] 3 | use std::io::prelude::*;
Dec 18 08:06:51.217 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:51.217 INFO [stderr]   |
Dec 18 08:06:51.217 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:06:51.217 INFO [stderr] 
Dec 18 08:06:51.224 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 08:06:51.224 INFO [stderr]  --> src/lib.rs:3:5
Dec 18 08:06:51.224 INFO [stderr]   |
Dec 18 08:06:51.224 INFO [stderr] 3 | use std::io::prelude::*;
Dec 18 08:06:51.224 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:51.224 INFO [stderr]   |
Dec 18 08:06:51.224 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:06:51.224 INFO [stderr] 
Dec 18 08:06:51.596 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
Dec 18 08:06:51.981 INFO running `"docker" "inspect" "350f5776aac13c002c510e65f6796701936e32769844ddeb58eef019df75c7a8"`
Dec 18 08:06:52.250 INFO running `"docker" "rm" "-f" "350f5776aac13c002c510e65f6796701936e32769844ddeb58eef019df75c7a8"`
Dec 18 08:06:52.418 INFO [stdout] 350f5776aac13c002c510e65f6796701936e32769844ddeb58eef019df75c7a8