Dec 19 13:15:15.693 INFO checking mahulst/rust-playground-w against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:15:15.693 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/mahulst/rust-playground-w:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:15:16.123 INFO [stdout] af82320174ae66b7c96bf898dfd5ff7f708cb820d82008d8ee24154e5c940c9d
Dec 19 13:15:16.125 INFO running `"docker" "start" "-a" "af82320174ae66b7c96bf898dfd5ff7f708cb820d82008d8ee24154e5c940c9d"`
Dec 19 13:15:18.396 INFO [stderr]     Checking minigrep v0.1.0 (/opt/crater/workdir)
Dec 19 13:15:18.656 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:15:18.656 INFO [stderr]  --> src/lib.rs:3:5
Dec 19 13:15:18.656 INFO [stderr]   |
Dec 19 13:15:18.656 INFO [stderr] 3 | use std::io::prelude::*;
Dec 19 13:15:18.656 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 13:15:18.656 INFO [stderr]   |
Dec 19 13:15:18.656 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:15:18.656 INFO [stderr] 
Dec 19 13:15:18.708 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:15:18.708 INFO [stderr]  --> src/lib.rs:3:5
Dec 19 13:15:18.708 INFO [stderr]   |
Dec 19 13:15:18.708 INFO [stderr] 3 | use std::io::prelude::*;
Dec 19 13:15:18.708 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 13:15:18.708 INFO [stderr]   |
Dec 19 13:15:18.708 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:15:18.708 INFO [stderr] 
Dec 19 13:15:19.010 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Dec 19 13:15:19.994 INFO running `"docker" "inspect" "af82320174ae66b7c96bf898dfd5ff7f708cb820d82008d8ee24154e5c940c9d"`
Dec 19 13:15:20.144 INFO running `"docker" "rm" "-f" "af82320174ae66b7c96bf898dfd5ff7f708cb820d82008d8ee24154e5c940c9d"`
Dec 19 13:15:20.452 INFO [stdout] af82320174ae66b7c96bf898dfd5ff7f708cb820d82008d8ee24154e5c940c9d