Dec 11 20:46:50.429 INFO checking clD11/rust-katas against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:46:50.429 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 11 20:46:50.724 INFO [stdout] 47296bd6fe6086c154b9aa873ac94aa1ee9e9e65cefb247ee77eba0c2aaab48c
Dec 11 20:46:50.724 INFO running `"docker" "start" "-a" "47296bd6fe6086c154b9aa873ac94aa1ee9e9e65cefb247ee77eba0c2aaab48c"`
Dec 11 20:46:51.604 INFO [stderr] usermod: no changes
Dec 11 20:46:51.683 INFO [stderr]     Checking rust-katas v0.1.0 (/source)
Dec 11 20:46:52.054 INFO [stderr] warning: unused import: `std::io`
Dec 11 20:46:52.054 INFO [stderr]  --> src/main.rs:3:5
Dec 11 20:46:52.054 INFO [stderr]   |
Dec 11 20:46:52.054 INFO [stderr] 3 | use std::io;
Dec 11 20:46:52.054 INFO [stderr]   |     ^^^^^^^
Dec 11 20:46:52.054 INFO [stderr]   |
Dec 11 20:46:52.054 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:46:52.054 INFO [stderr] 
Dec 11 20:46:52.054 INFO [stderr] warning: unused import: `rand::Rng`
Dec 11 20:46:52.054 INFO [stderr]  --> src/main.rs:4:5
Dec 11 20:46:52.054 INFO [stderr]   |
Dec 11 20:46:52.054 INFO [stderr] 4 | use rand::Rng;
Dec 11 20:46:52.054 INFO [stderr]   |     ^^^^^^^^^
Dec 11 20:46:52.054 INFO [stderr] 
Dec 11 20:46:52.054 INFO [stderr] warning: unused import: `std::cmp::Ordering`
Dec 11 20:46:52.054 INFO [stderr]  --> src/main.rs:5:5
Dec 11 20:46:52.054 INFO [stderr]   |
Dec 11 20:46:52.054 INFO [stderr] 5 | use std::cmp::Ordering;
Dec 11 20:46:52.054 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:46:52.054 INFO [stderr] 
Dec 11 20:46:52.364 INFO [stderr] warning: unused import: `std::io`
Dec 11 20:46:52.365 INFO [stderr]  --> src/main.rs:3:5
Dec 11 20:46:52.365 INFO [stderr]   |
Dec 11 20:46:52.365 INFO [stderr] 3 | use std::io;
Dec 11 20:46:52.365 INFO [stderr]   |     ^^^^^^^
Dec 11 20:46:52.365 INFO [stderr]   |
Dec 11 20:46:52.365 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:46:52.365 INFO [stderr] 
Dec 11 20:46:52.365 INFO [stderr] warning: unused import: `rand::Rng`
Dec 11 20:46:52.365 INFO [stderr]  --> src/main.rs:4:5
Dec 11 20:46:52.365 INFO [stderr]   |
Dec 11 20:46:52.365 INFO [stderr] 4 | use rand::Rng;
Dec 11 20:46:52.365 INFO [stderr]   |     ^^^^^^^^^
Dec 11 20:46:52.365 INFO [stderr] 
Dec 11 20:46:52.365 INFO [stderr] warning: unused import: `std::cmp::Ordering`
Dec 11 20:46:52.365 INFO [stderr]  --> src/main.rs:5:5
Dec 11 20:46:52.365 INFO [stderr]   |
Dec 11 20:46:52.365 INFO [stderr] 5 | use std::cmp::Ordering;
Dec 11 20:46:52.365 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:46:52.365 INFO [stderr] 
Dec 11 20:46:52.365 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 11 20:46:52.365 INFO [stderr] su: No module specific data is present
Dec 11 20:46:52.953 INFO running `"docker" "inspect" "47296bd6fe6086c154b9aa873ac94aa1ee9e9e65cefb247ee77eba0c2aaab48c"`
Dec 11 20:46:53.316 INFO running `"docker" "rm" "-f" "47296bd6fe6086c154b9aa873ac94aa1ee9e9e65cefb247ee77eba0c2aaab48c"`
Dec 11 20:46:53.718 INFO [stdout] 47296bd6fe6086c154b9aa873ac94aa1ee9e9e65cefb247ee77eba0c2aaab48c