Dec 19 11:04:45.906 INFO checking petr-tik/dark_rusty_pool against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:04:45.906 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/petr-tik/dark_rusty_pool:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:04:46.230 INFO [stdout] 2bec536adb55034aceb576ba512cff5192875aa4f10b00c779bd6c768dfee3d5
Dec 19 11:04:46.251 INFO running `"docker" "start" "-a" "2bec536adb55034aceb576ba512cff5192875aa4f10b00c779bd6c768dfee3d5"`
Dec 19 11:04:47.200 INFO [stderr]     Checking order_book v0.1.0 (/opt/crater/workdir)
Dec 19 11:04:47.492 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 11:04:47.492 INFO [stderr]  --> src/main.rs:5:5
Dec 19 11:04:47.492 INFO [stderr]   |
Dec 19 11:04:47.492 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 19 11:04:47.492 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:04:47.492 INFO [stderr]   |
Dec 19 11:04:47.492 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:04:47.492 INFO [stderr] 
Dec 19 11:04:47.500 INFO [stderr] warning: unused import: `hash`
Dec 19 11:04:47.500 INFO [stderr]   --> src/main.rs:21:14
Dec 19 11:04:47.500 INFO [stderr]    |
Dec 19 11:04:47.500 INFO [stderr] 21 | use orders::{hash, LimitOrder, ReduceOrder};
Dec 19 11:04:47.500 INFO [stderr]    |              ^^^^
Dec 19 11:04:47.500 INFO [stderr] 
Dec 19 11:04:47.568 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 11:04:47.568 INFO [stderr]  --> src/main.rs:5:5
Dec 19 11:04:47.568 INFO [stderr]   |
Dec 19 11:04:47.568 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 19 11:04:47.568 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:04:47.568 INFO [stderr]   |
Dec 19 11:04:47.568 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:04:47.568 INFO [stderr] 
Dec 19 11:04:47.687 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 19 11:04:47.687 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:04:47.687 INFO [stderr]   |
Dec 19 11:04:47.687 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 19 11:04:47.687 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 19 11:04:47.687 INFO [stderr]   |
Dec 19 11:04:47.687 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:04:47.687 INFO [stderr] 
Dec 19 11:04:48.075 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 19 11:04:48.075 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:04:48.075 INFO [stderr]   |
Dec 19 11:04:48.075 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 19 11:04:48.075 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 19 11:04:48.075 INFO [stderr]   |
Dec 19 11:04:48.075 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:04:48.076 INFO [stderr] 
Dec 19 11:04:48.128 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Dec 19 11:04:48.460 INFO running `"docker" "inspect" "2bec536adb55034aceb576ba512cff5192875aa4f10b00c779bd6c768dfee3d5"`
Dec 19 11:04:48.574 INFO running `"docker" "rm" "-f" "2bec536adb55034aceb576ba512cff5192875aa4f10b00c779bd6c768dfee3d5"`
Dec 19 11:04:48.758 INFO [stdout] 2bec536adb55034aceb576ba512cff5192875aa4f10b00c779bd6c768dfee3d5