Dec 18 04:36:31.465 INFO checking acmumn/minnehack-blockchain-check-in against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:36:31.465 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/acmumn/minnehack-blockchain-check-in:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:36:32.227 INFO [stdout] dc187f763a5b866a39519391b5c9ff8415f87ac770d6336156c51743fb3884c8
Dec 18 04:36:32.230 INFO running `"docker" "start" "-a" "dc187f763a5b866a39519391b5c9ff8415f87ac770d6336156c51743fb3884c8"`
Dec 18 04:36:34.018 INFO [stderr]     Checking memchr v1.0.2
Dec 18 04:36:34.024 INFO [stderr]     Checking serde_cbor v0.8.1
Dec 18 04:36:34.025 INFO [stderr]     Checking arrayvec v0.4.6
Dec 18 04:36:34.025 INFO [stderr]     Checking bytes v0.4.6
Dec 18 04:36:34.025 INFO [stderr]     Checking tui v0.2.0
Dec 18 04:36:34.025 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 18 04:36:34.025 INFO [stderr]     Checking env_logger v0.4.3
Dec 18 04:36:34.025 INFO [stderr]     Checking error-chain v0.10.0
Dec 18 04:36:35.630 INFO [stderr]     Checking nom v3.2.1
Dec 18 04:36:36.839 INFO [stderr]     Checking dotenv v0.10.1
Dec 18 04:36:37.267 INFO [stderr]     Checking pretty_env_logger v0.1.1
Dec 18 04:36:39.730 INFO [stderr]     Checking quickcheck v0.6.0
Dec 18 04:36:40.586 INFO [stderr]     Checking tokio-io v0.1.4
Dec 18 04:36:44.854 INFO [stderr]     Checking tokio-core v0.1.12
Dec 18 04:36:49.317 INFO [stderr]     Checking minnehack-check-in v0.1.0 (/opt/crater/workdir)
Dec 18 04:36:51.224 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:36:51.224 INFO [stderr]   --> src/lib.rs:79:13
Dec 18 04:36:51.224 INFO [stderr]    |
Dec 18 04:36:51.224 INFO [stderr] 79 |         let mut client = Client::new_with_opts(
Dec 18 04:36:51.224 INFO [stderr]    |             ----^^^^^^
Dec 18 04:36:51.224 INFO [stderr]    |             |
Dec 18 04:36:51.224 INFO [stderr]    |             help: remove this `mut`
Dec 18 04:36:51.224 INFO [stderr]    |
Dec 18 04:36:51.224 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 04:36:51.224 INFO [stderr] 
Dec 18 04:36:51.296 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:36:51.296 INFO [stderr]   --> src/lib.rs:79:13
Dec 18 04:36:51.296 INFO [stderr]    |
Dec 18 04:36:51.296 INFO [stderr] 79 |         let mut client = Client::new_with_opts(
Dec 18 04:36:51.296 INFO [stderr]    |             ----^^^^^^
Dec 18 04:36:51.296 INFO [stderr]    |             |
Dec 18 04:36:51.296 INFO [stderr]    |             help: remove this `mut`
Dec 18 04:36:51.296 INFO [stderr]    |
Dec 18 04:36:51.296 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 04:36:51.296 INFO [stderr] 
Dec 18 04:36:51.867 INFO [stderr]     Checking minnehack-check-in-monitor v0.1.0 (/opt/crater/workdir/minnehack-check-in-monitor)
Dec 18 04:36:55.924 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.17s
Dec 18 04:36:56.627 INFO running `"docker" "inspect" "dc187f763a5b866a39519391b5c9ff8415f87ac770d6336156c51743fb3884c8"`
Dec 18 04:36:56.940 INFO running `"docker" "rm" "-f" "dc187f763a5b866a39519391b5c9ff8415f87ac770d6336156c51743fb3884c8"`
Dec 18 04:36:57.215 INFO [stdout] dc187f763a5b866a39519391b5c9ff8415f87ac770d6336156c51743fb3884c8