[INFO] crate atomic-batcher 0.8.2 is already in cache
[INFO] extracting crate atomic-batcher 0.8.2 into work/ex/clippy-test-run/sources/stable/reg/atomic-batcher/0.8.2
[INFO] extracting crate atomic-batcher 0.8.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/atomic-batcher/0.8.2
[INFO] validating manifest of atomic-batcher-0.8.2 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of atomic-batcher-0.8.2 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing atomic-batcher-0.8.2
[INFO] finished frobbing atomic-batcher-0.8.2
[INFO] frobbed toml for atomic-batcher-0.8.2 written to work/ex/clippy-test-run/sources/stable/reg/atomic-batcher/0.8.2/Cargo.toml
[INFO] started frobbing atomic-batcher-0.8.2
[INFO] finished frobbing atomic-batcher-0.8.2
[INFO] frobbed toml for atomic-batcher-0.8.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/atomic-batcher/0.8.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting atomic-batcher-0.8.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/atomic-batcher/0.8.2:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5c948268c25cdda6b43677826f16f9a9e03723bb42a08a54acb04ea5973dc07a
[INFO] running `"docker" "start" "-a" "5c948268c25cdda6b43677826f16f9a9e03723bb42a08a54acb04ea5973dc07a"`
[INFO] [stderr]     Checking atomic-batcher v0.8.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/lib.rs:88:51
[INFO] [stderr]    |
[INFO] [stderr] 88 |   pub fn append(&self, val: Vec<T>, cb: CbOption) -> () {
[INFO] [stderr]    |                                                   ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/lib.rs:106:52
[INFO] [stderr]     |
[INFO] [stderr] 106 |   pub fn done(self, err: Result<(), &'static str>) -> () {
[INFO] [stderr]     |                                                    ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] error: unneeded unit return type
[INFO] [stderr]   --> src/lib.rs:88:51
[INFO] [stderr]    |
[INFO] [stderr] 88 |   pub fn append(&self, val: Vec<T>, cb: CbOption) -> () {
[INFO] [stderr]    |                                                   ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:2:24
[INFO] [stderr]    |
[INFO] [stderr] 2  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr]    = note: #[deny(clippy::unused_unit)] implied by #[deny(warnings)]
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] error: unneeded unit return type
[INFO] [stderr]    --> src/lib.rs:106:52
[INFO] [stderr]     |
[INFO] [stderr] 106 |   pub fn done(self, err: Result<(), &'static str>) -> () {
[INFO] [stderr]     |                                                    ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `atomic-batcher`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> tests/test.rs:12:49
[INFO] [stderr]    |
[INFO] [stderr] 12 |   fn run(val: Vec<u64>, _batcher: Batcher<u64>) -> () {
[INFO] [stderr]    |                                                 ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> tests/test.rs:21:52
[INFO] [stderr]    |
[INFO] [stderr] 21 |   let run = |val: Vec<u64>, batcher: Batcher<u64>| -> () {
[INFO] [stderr]    |                                                    ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> tests/test.rs:35:52
[INFO] [stderr]    |
[INFO] [stderr] 35 |   let run = |val: Vec<u64>, batcher: Batcher<u64>| -> () {
[INFO] [stderr]    |                                                    ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> tests/test.rs:56:58
[INFO] [stderr]    |
[INFO] [stderr] 56 |   let run = move |val: Vec<u64>, _batcher: Batcher<u64>| -> () {
[INFO] [stderr]    |                                                          ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5c948268c25cdda6b43677826f16f9a9e03723bb42a08a54acb04ea5973dc07a"`
[INFO] running `"docker" "rm" "-f" "5c948268c25cdda6b43677826f16f9a9e03723bb42a08a54acb04ea5973dc07a"`
[INFO] [stdout] 5c948268c25cdda6b43677826f16f9a9e03723bb42a08a54acb04ea5973dc07a