Dec 04 12:31:23.334 INFO checking petr-tik/dark_rusty_pool against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 12:31:23.334 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 12:31:23.619 INFO [stdout] ac61aa55c634cd996e43dd7e7e11e8ec037694c9ffe1919a116f192d5b1a309d
Dec 04 12:31:23.621 INFO running `"docker" "start" "-a" "ac61aa55c634cd996e43dd7e7e11e8ec037694c9ffe1919a116f192d5b1a309d"`
Dec 04 12:31:24.546 INFO [stderr] usermod: no changes
Dec 04 12:31:24.577 INFO [stderr]     Checking order_book v0.1.0 (/source)
Dec 04 12:31:24.884 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 04 12:31:24.884 INFO [stderr]  --> src/main.rs:5:5
Dec 04 12:31:24.885 INFO [stderr]   |
Dec 04 12:31:24.885 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 04 12:31:24.885 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:31:24.885 INFO [stderr]   |
Dec 04 12:31:24.885 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 12:31:24.885 INFO [stderr] 
Dec 04 12:31:24.885 INFO [stderr] warning: unused import: `hash`
Dec 04 12:31:24.885 INFO [stderr]   --> src/main.rs:21:14
Dec 04 12:31:24.885 INFO [stderr]    |
Dec 04 12:31:24.887 INFO [stderr] 21 | use orders::{hash, LimitOrder, ReduceOrder};
Dec 04 12:31:24.887 INFO [stderr]    |              ^^^^
Dec 04 12:31:24.887 INFO [stderr] 
Dec 04 12:31:24.937 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 04 12:31:24.937 INFO [stderr]  --> src/main.rs:5:5
Dec 04 12:31:24.938 INFO [stderr]   |
Dec 04 12:31:24.938 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 04 12:31:24.938 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:31:24.938 INFO [stderr]   |
Dec 04 12:31:24.938 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 12:31:24.938 INFO [stderr] 
Dec 04 12:31:25.116 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 04 12:31:25.116 INFO [stderr]  --> src/main.rs:1:12
Dec 04 12:31:25.116 INFO [stderr]   |
Dec 04 12:31:25.116 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 04 12:31:25.116 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 04 12:31:25.116 INFO [stderr]   |
Dec 04 12:31:25.116 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 12:31:25.116 INFO [stderr] 
Dec 04 12:31:25.475 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 04 12:31:25.475 INFO [stderr]  --> src/main.rs:1:12
Dec 04 12:31:25.475 INFO [stderr]   |
Dec 04 12:31:25.475 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 04 12:31:25.475 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 04 12:31:25.475 INFO [stderr]   |
Dec 04 12:31:25.475 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 12:31:25.475 INFO [stderr] 
Dec 04 12:31:25.543 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
Dec 04 12:31:25.543 INFO [stderr] su: No module specific data is present
Dec 04 12:31:25.905 INFO running `"docker" "inspect" "ac61aa55c634cd996e43dd7e7e11e8ec037694c9ffe1919a116f192d5b1a309d"`
Dec 04 12:31:25.977 INFO running `"docker" "rm" "-f" "ac61aa55c634cd996e43dd7e7e11e8ec037694c9ffe1919a116f192d5b1a309d"`
Dec 04 12:31:26.056 INFO [stdout] ac61aa55c634cd996e43dd7e7e11e8ec037694c9ffe1919a116f192d5b1a309d