Dec 18 06:23:36.507 INFO checking MindBuffer/osc_to_beyond against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:23:36.507 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/MindBuffer/osc_to_beyond:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:23:36.767 INFO [stdout] 3f6bfb56ee84325457aa71f4390009cf56343386050d8e7fab73aea7db4b605d
Dec 18 06:23:36.771 INFO running `"docker" "start" "-a" "3f6bfb56ee84325457aa71f4390009cf56343386050d8e7fab73aea7db4b605d"`
Dec 18 06:23:37.469 INFO [stderr]    Compiling libloading v0.4.0
Dec 18 06:23:38.663 INFO [stderr]     Checking pangolin v0.1.0 (/opt/crater/workdir/pangolin)
Dec 18 06:23:39.080 INFO [stderr]     Checking osc_to_beyond v0.1.0 (/opt/crater/workdir)
Dec 18 06:23:39.532 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:39.532 INFO [stderr]    --> src/main.rs:158:17
Dec 18 06:23:39.532 INFO [stderr]     |
Dec 18 06:23:39.532 INFO [stderr] 158 |             let mut layer = layer_map.entry(message.addr.clone()).or_insert(Layer::default());
Dec 18 06:23:39.532 INFO [stderr]     |                 ----^^^^^
Dec 18 06:23:39.532 INFO [stderr]     |                 |
Dec 18 06:23:39.532 INFO [stderr]     |                 help: remove this `mut`
Dec 18 06:23:39.532 INFO [stderr]     |
Dec 18 06:23:39.532 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:23:39.532 INFO [stderr] 
Dec 18 06:23:39.532 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:39.532 INFO [stderr]    --> src/main.rs:165:21
Dec 18 06:23:39.532 INFO [stderr]     |
Dec 18 06:23:39.532 INFO [stderr] 165 |                 let mut blob_chunks = layer.blob_map.entry(time_stamp).or_insert(Vec::new());
Dec 18 06:23:39.532 INFO [stderr]     |                     ----^^^^^^^^^^^
Dec 18 06:23:39.532 INFO [stderr]     |                     |
Dec 18 06:23:39.532 INFO [stderr]     |                     help: remove this `mut`
Dec 18 06:23:39.532 INFO [stderr] 
Dec 18 06:23:39.556 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:39.556 INFO [stderr]    --> src/main.rs:158:17
Dec 18 06:23:39.556 INFO [stderr]     |
Dec 18 06:23:39.556 INFO [stderr] 158 |             let mut layer = layer_map.entry(message.addr.clone()).or_insert(Layer::default());
Dec 18 06:23:39.556 INFO [stderr]     |                 ----^^^^^
Dec 18 06:23:39.556 INFO [stderr]     |                 |
Dec 18 06:23:39.556 INFO [stderr]     |                 help: remove this `mut`
Dec 18 06:23:39.556 INFO [stderr]     |
Dec 18 06:23:39.556 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:23:39.556 INFO [stderr] 
Dec 18 06:23:39.556 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:39.556 INFO [stderr]    --> src/main.rs:165:21
Dec 18 06:23:39.556 INFO [stderr]     |
Dec 18 06:23:39.556 INFO [stderr] 165 |                 let mut blob_chunks = layer.blob_map.entry(time_stamp).or_insert(Vec::new());
Dec 18 06:23:39.556 INFO [stderr]     |                     ----^^^^^^^^^^^
Dec 18 06:23:39.556 INFO [stderr]     |                     |
Dec 18 06:23:39.556 INFO [stderr]     |                     help: remove this `mut`
Dec 18 06:23:39.556 INFO [stderr] 
Dec 18 06:23:39.594 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
Dec 18 06:23:39.860 INFO running `"docker" "inspect" "3f6bfb56ee84325457aa71f4390009cf56343386050d8e7fab73aea7db4b605d"`
Dec 18 06:23:39.982 INFO running `"docker" "rm" "-f" "3f6bfb56ee84325457aa71f4390009cf56343386050d8e7fab73aea7db4b605d"`
Dec 18 06:23:40.197 INFO [stdout] 3f6bfb56ee84325457aa71f4390009cf56343386050d8e7fab73aea7db4b605d