Dec 11 14:18:25.471 INFO checking mahulst/rust-playground-w against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 14:18:25.471 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 14:18:26.012 INFO [stdout] cac5ab9a8189af24f2b56eb899263f69a0a1d97c8a016f0d6b4a672407c75edc
Dec 11 14:18:26.014 INFO running `"docker" "start" "-a" "cac5ab9a8189af24f2b56eb899263f69a0a1d97c8a016f0d6b4a672407c75edc"`
Dec 11 14:18:28.115 INFO [stderr] usermod: no changes
Dec 11 14:18:28.208 INFO [stderr]     Checking minigrep v0.1.0 (/source)
Dec 11 14:18:28.924 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 11 14:18:28.925 INFO [stderr]  --> src/lib.rs:3:5
Dec 11 14:18:28.925 INFO [stderr]   |
Dec 11 14:18:28.925 INFO [stderr] 3 | use std::io::prelude::*;
Dec 11 14:18:28.926 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 11 14:18:28.926 INFO [stderr]   |
Dec 11 14:18:28.926 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 14:18:28.927 INFO [stderr] 
Dec 11 14:18:29.157 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 11 14:18:29.157 INFO [stderr]  --> src/lib.rs:3:5
Dec 11 14:18:29.157 INFO [stderr]   |
Dec 11 14:18:29.157 INFO [stderr] 3 | use std::io::prelude::*;
Dec 11 14:18:29.157 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 11 14:18:29.157 INFO [stderr]   |
Dec 11 14:18:29.157 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 14:18:29.157 INFO [stderr] 
Dec 11 14:18:29.897 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
Dec 11 14:18:29.900 INFO [stderr] su: No module specific data is present
Dec 11 14:18:30.790 INFO running `"docker" "inspect" "cac5ab9a8189af24f2b56eb899263f69a0a1d97c8a016f0d6b4a672407c75edc"`
Dec 11 14:18:31.142 INFO running `"docker" "rm" "-f" "cac5ab9a8189af24f2b56eb899263f69a0a1d97c8a016f0d6b4a672407c75edc"`
Dec 11 14:18:31.568 INFO [stdout] cac5ab9a8189af24f2b56eb899263f69a0a1d97c8a016f0d6b4a672407c75edc