Dec 19 11:04:45.498 INFO checking petr-tik/dark_rusty_pool against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 11:04:45.498 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:04:45.729 INFO [stdout] 36c83cd810b0e318ddf5850e780dadeee84aaf05ae646b616a7c0df2a86c5641
Dec 19 11:04:45.734 INFO running `"docker" "start" "-a" "36c83cd810b0e318ddf5850e780dadeee84aaf05ae646b616a7c0df2a86c5641"`
Dec 19 11:04:46.648 INFO [stderr]     Checking order_book v0.1.0 (/opt/crater/workdir)
Dec 19 11:04:46.824 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 11:04:46.824 INFO [stderr]  --> src/main.rs:5:5
Dec 19 11:04:46.824 INFO [stderr]   |
Dec 19 11:04:46.824 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 19 11:04:46.824 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:04:46.824 INFO [stderr]   |
Dec 19 11:04:46.824 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:04:46.824 INFO [stderr] 
Dec 19 11:04:46.824 INFO [stderr] warning: unused import: `hash`
Dec 19 11:04:46.824 INFO [stderr]   --> src/main.rs:21:14
Dec 19 11:04:46.824 INFO [stderr]    |
Dec 19 11:04:46.824 INFO [stderr] 21 | use orders::{hash, LimitOrder, ReduceOrder};
Dec 19 11:04:46.824 INFO [stderr]    |              ^^^^
Dec 19 11:04:46.824 INFO [stderr] 
Dec 19 11:04:46.897 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 11:04:46.897 INFO [stderr]  --> src/main.rs:5:5
Dec 19 11:04:46.897 INFO [stderr]   |
Dec 19 11:04:46.897 INFO [stderr] 5 | use std::collections::BTreeMap;
Dec 19 11:04:46.897 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:04:46.897 INFO [stderr]   |
Dec 19 11:04:46.897 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:04:46.897 INFO [stderr] 
Dec 19 11:04:47.000 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 19 11:04:47.000 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:04:47.000 INFO [stderr]   |
Dec 19 11:04:47.000 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 19 11:04:47.000 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 19 11:04:47.000 INFO [stderr]   |
Dec 19 11:04:47.000 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:04:47.000 INFO [stderr] 
Dec 19 11:04:47.395 INFO [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 19 11:04:47.395 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:04:47.395 INFO [stderr]   |
Dec 19 11:04:47.395 INFO [stderr] 1 | #![feature(extern_prelude)]
Dec 19 11:04:47.395 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 19 11:04:47.400 INFO [stderr]   |
Dec 19 11:04:47.400 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:04:47.400 INFO [stderr] 
Dec 19 11:04:47.491 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
Dec 19 11:04:47.954 INFO running `"docker" "inspect" "36c83cd810b0e318ddf5850e780dadeee84aaf05ae646b616a7c0df2a86c5641"`
Dec 19 11:04:48.109 INFO running `"docker" "rm" "-f" "36c83cd810b0e318ddf5850e780dadeee84aaf05ae646b616a7c0df2a86c5641"`
Dec 19 11:04:48.243 INFO [stdout] 36c83cd810b0e318ddf5850e780dadeee84aaf05ae646b616a7c0df2a86c5641