Dec 18 12:44:28.105 INFO checking pubsub-0.2.3 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 12:44:28.106 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/pubsub/0.2.3:/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 12:44:28.505 INFO [stdout] f31ac121ab48e44052e432e722af1aeb4afe671a0e4c75ca2c5271efa0dd009f
Dec 18 12:44:28.510 INFO running `"docker" "start" "-a" "f31ac121ab48e44052e432e722af1aeb4afe671a0e4c75ca2c5271efa0dd009f"`
Dec 18 12:44:30.092 INFO [stderr]     Checking threadpool v0.1.4
Dec 18 12:44:30.633 INFO [stderr]     Checking pubsub v0.2.3 (/opt/crater/workdir)
Dec 18 12:44:31.351 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:44:31.351 INFO [stderr]    --> src/lib.rs:192:10
Dec 18 12:44:31.351 INFO [stderr]     |
Dec 18 12:44:31.351 INFO [stderr] 192 |                     let mut func = guard.deref_mut();
Dec 18 12:44:31.351 INFO [stderr]     |                         ----^^^^
Dec 18 12:44:31.351 INFO [stderr]     |                         |
Dec 18 12:44:31.351 INFO [stderr]     |                         help: remove this `mut`
Dec 18 12:44:31.351 INFO [stderr]     |
Dec 18 12:44:31.351 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 12:44:31.351 INFO [stderr] 
Dec 18 12:44:31.407 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:44:31.407 INFO [stderr]    --> src/lib.rs:192:10
Dec 18 12:44:31.407 INFO [stderr]     |
Dec 18 12:44:31.407 INFO [stderr] 192 |                     let mut func = guard.deref_mut();
Dec 18 12:44:31.407 INFO [stderr]     |                         ----^^^^
Dec 18 12:44:31.407 INFO [stderr]     |                         |
Dec 18 12:44:31.407 INFO [stderr]     |                         help: remove this `mut`
Dec 18 12:44:31.407 INFO [stderr]     |
Dec 18 12:44:31.407 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 12:44:31.407 INFO [stderr] 
Dec 18 12:44:31.520 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
Dec 18 12:44:32.183 INFO running `"docker" "inspect" "f31ac121ab48e44052e432e722af1aeb4afe671a0e4c75ca2c5271efa0dd009f"`
Dec 18 12:44:32.424 INFO running `"docker" "rm" "-f" "f31ac121ab48e44052e432e722af1aeb4afe671a0e4c75ca2c5271efa0dd009f"`
Dec 18 12:44:32.696 INFO [stdout] f31ac121ab48e44052e432e722af1aeb4afe671a0e4c75ca2c5271efa0dd009f