Dec 12 03:23:18.813 INFO checking ColeGitHub/Rust_Minigrep against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:23:18.813 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 03:23:19.427 INFO [stdout] 8a2b3ce29743752a00ecf6c2f1092a17773d03c253ce58f6b95f7a66cbe7d6d2
Dec 12 03:23:19.429 INFO running `"docker" "start" "-a" "8a2b3ce29743752a00ecf6c2f1092a17773d03c253ce58f6b95f7a66cbe7d6d2"`
Dec 12 03:23:21.043 INFO [stderr] usermod: no changes
Dec 12 03:23:21.108 INFO [stderr]     Checking minigrep v0.1.0 (/source)
Dec 12 03:23:21.780 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 12 03:23:21.780 INFO [stderr]  --> src/lib.rs:3:5
Dec 12 03:23:21.780 INFO [stderr]   |
Dec 12 03:23:21.780 INFO [stderr] 3 | use std::io::prelude::*;
Dec 12 03:23:21.780 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 03:23:21.780 INFO [stderr]   |
Dec 12 03:23:21.780 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:23:21.780 INFO [stderr] 
Dec 12 03:23:22.392 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 12 03:23:22.392 INFO [stderr]  --> src/lib.rs:3:5
Dec 12 03:23:22.392 INFO [stderr]   |
Dec 12 03:23:22.392 INFO [stderr] 3 | use std::io::prelude::*;
Dec 12 03:23:22.392 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 03:23:22.392 INFO [stderr]   |
Dec 12 03:23:22.392 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:23:22.392 INFO [stderr] 
Dec 12 03:23:23.100 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
Dec 12 03:23:23.105 INFO [stderr] su: No module specific data is present
Dec 12 03:23:23.968 INFO running `"docker" "inspect" "8a2b3ce29743752a00ecf6c2f1092a17773d03c253ce58f6b95f7a66cbe7d6d2"`
Dec 12 03:23:24.320 INFO running `"docker" "rm" "-f" "8a2b3ce29743752a00ecf6c2f1092a17773d03c253ce58f6b95f7a66cbe7d6d2"`
Dec 12 03:23:24.688 INFO [stdout] 8a2b3ce29743752a00ecf6c2f1092a17773d03c253ce58f6b95f7a66cbe7d6d2