Dec 05 13:37:43.191 INFO checking frust-0.0.7 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 13:37:43.215 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 13:37:43.443 INFO [stdout] 4ea70bc2e6c32215cb15616d9854beab939a9d5849e04e1aac15a83ec19c06bc
Dec 05 13:37:43.451 INFO running `"docker" "start" "-a" "4ea70bc2e6c32215cb15616d9854beab939a9d5849e04e1aac15a83ec19c06bc"`
Dec 05 13:37:44.040 INFO [stderr] usermod: no changes
Dec 05 13:37:44.070 INFO [stderr]     Checking frust v0.0.7 (/source)
Dec 05 13:37:44.860 INFO [stderr] warning: unused import: `std::collections::*`
Dec 05 13:37:44.861 INFO [stderr]    --> src/semigroup.rs:313:9
Dec 05 13:37:44.861 INFO [stderr]     |
Dec 05 13:37:44.861 INFO [stderr] 313 |     use std::collections::*;
Dec 05 13:37:44.861 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^
Dec 05 13:37:44.861 INFO [stderr]     |
Dec 05 13:37:44.861 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 05 13:37:44.861 INFO [stderr] 
Dec 05 13:37:44.861 INFO [stderr] warning: unused import: `std::cell::*`
Dec 05 13:37:44.861 INFO [stderr]    --> src/semigroup.rs:314:9
Dec 05 13:37:44.861 INFO [stderr]     |
Dec 05 13:37:44.861 INFO [stderr] 314 |     use std::cell::*;
Dec 05 13:37:44.861 INFO [stderr]     |         ^^^^^^^^^^^^
Dec 05 13:37:44.861 INFO [stderr] 
Dec 05 13:37:44.862 INFO [stderr] warning: unused import: `std::collections::*`
Dec 05 13:37:44.862 INFO [stderr]    --> src/monoid.rs:226:9
Dec 05 13:37:44.862 INFO [stderr]     |
Dec 05 13:37:44.862 INFO [stderr] 226 |     use std::collections::*;
Dec 05 13:37:44.862 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^
Dec 05 13:37:44.862 INFO [stderr] 
Dec 05 13:37:46.027 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
Dec 05 13:37:46.029 INFO [stderr] su: No module specific data is present
Dec 05 13:37:46.419 INFO running `"docker" "inspect" "4ea70bc2e6c32215cb15616d9854beab939a9d5849e04e1aac15a83ec19c06bc"`
Dec 05 13:37:46.779 INFO running `"docker" "rm" "-f" "4ea70bc2e6c32215cb15616d9854beab939a9d5849e04e1aac15a83ec19c06bc"`
Dec 05 13:37:46.999 INFO [stdout] 4ea70bc2e6c32215cb15616d9854beab939a9d5849e04e1aac15a83ec19c06bc