[INFO] crate paxos 0.0.2 is already in cache
[INFO] extracting crate paxos 0.0.2 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/paxos/0.0.2
[INFO] extracting crate paxos 0.0.2 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/paxos/0.0.2
[INFO] validating manifest of paxos-0.0.2 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of paxos-0.0.2 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing paxos-0.0.2
[INFO] finished frobbing paxos-0.0.2
[INFO] frobbed toml for paxos-0.0.2 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/paxos/0.0.2/Cargo.toml
[INFO] started frobbing paxos-0.0.2
[INFO] finished frobbing paxos-0.0.2
[INFO] frobbed toml for paxos-0.0.2 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/paxos/0.0.2/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking paxos-0.0.2 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/paxos/0.0.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4f22024936e6fa1caeb5c028870328b69f99a9f06a171c6bbd379c87a70214d9
[INFO] running `"docker" "start" "-a" "4f22024936e6fa1caeb5c028870328b69f99a9f06a171c6bbd379c87a70214d9"`
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking pagetable v0.0.3
[INFO] [stderr]     Checking sled_sync v0.2.2
[INFO] [stderr]     Checking historian v3.0.11
[INFO] [stderr]     Checking pagecache v0.6.0
[INFO] [stderr]     Checking sled v0.15.21
[INFO] [stderr]     Checking paxos v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/proposer.rs:301:21
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 let mut pending = self.in_flight.get_mut(&ballot).unwrap();
[INFO] [stderr]     |                     ----^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/proposer.rs:301:21
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 let mut pending = self.in_flight.get_mut(&ballot).unwrap();
[INFO] [stderr]     |                     ----^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/quickcheck.rs:468:21
[INFO] [stderr]     |
[INFO] [stderr] 468 |                 let mut entry = value_pool.entry(v).or_insert(0);
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/quickcheck.rs:482:21
[INFO] [stderr]     |
[INFO] [stderr] 482 |                 let mut count = value_pool.get_mut(&v).unwrap();
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `"docker" "inspect" "4f22024936e6fa1caeb5c028870328b69f99a9f06a171c6bbd379c87a70214d9"`
[INFO] running `"docker" "rm" "-f" "4f22024936e6fa1caeb5c028870328b69f99a9f06a171c6bbd379c87a70214d9"`
[INFO] [stdout] 4f22024936e6fa1caeb5c028870328b69f99a9f06a171c6bbd379c87a70214d9