[INFO] updating cached repository irvingwashington/leaky_bucket
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/irvingwashington/leaky_bucket
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/irvingwashington/leaky_bucket" "work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/irvingwashington/leaky_bucket" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/irvingwashington/leaky_bucket"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/irvingwashington/leaky_bucket'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 46239661d6c1a941e1cd08f7b7b4ca93f8e89fd6
[INFO] sha for GitHub repo irvingwashington/leaky_bucket: 46239661d6c1a941e1cd08f7b7b4ca93f8e89fd6
[INFO] validating manifest of irvingwashington/leaky_bucket on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of irvingwashington/leaky_bucket on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing irvingwashington/leaky_bucket
[INFO] finished frobbing irvingwashington/leaky_bucket
[INFO] frobbed toml for irvingwashington/leaky_bucket written to work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket/Cargo.toml
[INFO] started frobbing irvingwashington/leaky_bucket
[INFO] finished frobbing irvingwashington/leaky_bucket
[INFO] frobbed toml for irvingwashington/leaky_bucket written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/irvingwashington/leaky_bucket/Cargo.toml
[INFO] crate irvingwashington/leaky_bucket already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing irvingwashington/leaky_bucket against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2a8af40a02d1b6e2da4a5ae7deaf92bcb9881c3b073e1fd4031d0b850d731e4d
[INFO] running `"docker" "start" "-a" "2a8af40a02d1b6e2da4a5ae7deaf92bcb9881c3b073e1fd4031d0b850d731e4d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.32
[INFO] [stderr]    Compiling serde_derive_internals v0.20.1
[INFO] [stderr]    Compiling serde_derive v1.0.32
[INFO] [stderr]    Compiling bincode v1.0.0
[INFO] [stderr]    Compiling leaky_bucket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut stream = stream_result.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/hash_storage.rs:35:25
[INFO] [stderr]    |
[INFO] [stderr] 35 |                     let mut priority_elements = self.elements.get_mut(&priority).unwrap();
[INFO] [stderr]    |                         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.77s
[INFO] running `"docker" "inspect" "2a8af40a02d1b6e2da4a5ae7deaf92bcb9881c3b073e1fd4031d0b850d731e4d"`
[INFO] running `"docker" "rm" "-f" "2a8af40a02d1b6e2da4a5ae7deaf92bcb9881c3b073e1fd4031d0b850d731e4d"`
[INFO] [stdout] 2a8af40a02d1b6e2da4a5ae7deaf92bcb9881c3b073e1fd4031d0b850d731e4d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a357fae7cdb154ded5e121b081f72f68deda74653b81957f9ffe2a23b8643bc7
[INFO] running `"docker" "start" "-a" "a357fae7cdb154ded5e121b081f72f68deda74653b81957f9ffe2a23b8643bc7"`
[INFO] [stderr]    Compiling leaky_bucket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut stream = stream_result.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/hash_storage.rs:35:25
[INFO] [stderr]    |
[INFO] [stderr] 35 |                     let mut priority_elements = self.elements.get_mut(&priority).unwrap();
[INFO] [stderr]    |                         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "a357fae7cdb154ded5e121b081f72f68deda74653b81957f9ffe2a23b8643bc7"`
[INFO] running `"docker" "rm" "-f" "a357fae7cdb154ded5e121b081f72f68deda74653b81957f9ffe2a23b8643bc7"`
[INFO] [stdout] a357fae7cdb154ded5e121b081f72f68deda74653b81957f9ffe2a23b8643bc7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/irvingwashington/leaky_bucket:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 0eae2756683624728aa6c342f995c3a8edde72dfcc7562171e30f1322aa3099a
[INFO] running `"docker" "start" "-a" "0eae2756683624728aa6c342f995c3a8edde72dfcc7562171e30f1322aa3099a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/leaky_bucket-1dd22fbc48066f20
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test hash_storage::test::it_clears ... ok
[INFO] [stdout] test hash_storage::test::it_works_for_more_elements ... ok
[INFO] [stdout] test hash_storage::test::it_returns_correct_max_priority ... ok
[INFO] [stdout] test hash_storage::test::it_works_for_2_elements ... ok
[INFO] [stdout] test hash_storage::test::it_works_for_no_elements ... ok
[INFO] [stdout] test hash_storage::test::it_preserves_order_for_the_same_priority ... ok
[INFO] [stdout] test hash_storage::test::it_works_for_a_single_element ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0eae2756683624728aa6c342f995c3a8edde72dfcc7562171e30f1322aa3099a"`
[INFO] running `"docker" "rm" "-f" "0eae2756683624728aa6c342f995c3a8edde72dfcc7562171e30f1322aa3099a"`
[INFO] [stdout] 0eae2756683624728aa6c342f995c3a8edde72dfcc7562171e30f1322aa3099a