Dec 11 11:57:51.614 INFO checking petr-tik/dark_rusty_pool against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 11:57:51.614 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 11:57:51.912 INFO [stdout] d1812e396ade59c5d23efba3bfbfd2a514c1336446142bb51eca5b0ff66417fb
Dec 11 11:57:51.913 INFO running `"docker" "start" "-a" "d1812e396ade59c5d23efba3bfbfd2a514c1336446142bb51eca5b0ff66417fb"`
Dec 11 11:57:52.392 INFO [stderr] usermod: no changes
Dec 11 11:57:52.424 INFO [stderr]     Checking order_book v0.1.0 (/source)
Dec 11 11:57:52.651 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 11 11:57:52.651 INFO [stderr]  --> src/main.rs:5:5
Dec 11 11:57:52.651 INFO [stderr]   |
Dec 11 11:57:52.651 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 11 11:57:52.651 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:57:52.651 INFO [stderr]   |
Dec 11 11:57:52.651 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 11:57:52.651 INFO [stderr] 
Dec 11 11:57:52.652 INFO [stderr] warning: unused import: `hash`
Dec 11 11:57:52.656 INFO [stderr]   --> src/main.rs:21:14
Dec 11 11:57:52.656 INFO [stderr]    |
Dec 11 11:57:52.656 INFO [stderr] 21 | use orders::{hash, LimitOrder, ReduceOrder};
Dec 11 11:57:52.656 INFO [stderr]    |              ^^^^
Dec 11 11:57:52.656 INFO [stderr] 
Dec 11 11:57:52.673 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 11 11:57:52.674 INFO [stderr]  --> src/main.rs:5:5
Dec 11 11:57:52.674 INFO [stderr]   |
Dec 11 11:57:52.674 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 11 11:57:52.680 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:57:52.680 INFO [stderr]   |
Dec 11 11:57:52.680 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 11:57:52.680 INFO [stderr] 
Dec 11 11:57:52.845 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 11:57:52.845 INFO [stderr]  --> src/main.rs:1:12
Dec 11 11:57:52.845 INFO [stderr]   |
Dec 11 11:57:52.845 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 11:57:52.845 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 11:57:52.845 INFO [stderr]   |
Dec 11 11:57:52.845 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 11:57:52.845 INFO [stderr] 
Dec 11 11:57:53.153 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 11 11:57:53.153 INFO [stderr]  --> src/main.rs:1:12
Dec 11 11:57:53.153 INFO [stderr]   |
Dec 11 11:57:53.153 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 11 11:57:53.153 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 11 11:57:53.153 INFO [stderr]   |
Dec 11 11:57:53.153 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 11:57:53.153 INFO [stderr] 
Dec 11 11:57:53.184 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
Dec 11 11:57:53.188 INFO [stderr] su: No module specific data is present
Dec 11 11:57:53.596 INFO running `"docker" "inspect" "d1812e396ade59c5d23efba3bfbfd2a514c1336446142bb51eca5b0ff66417fb"`
Dec 11 11:57:53.707 INFO running `"docker" "rm" "-f" "d1812e396ade59c5d23efba3bfbfd2a514c1336446142bb51eca5b0ff66417fb"`
Dec 11 11:57:53.864 INFO [stdout] d1812e396ade59c5d23efba3bfbfd2a514c1336446142bb51eca5b0ff66417fb