[INFO] updating cached repository blt/mmap_comm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/blt/mmap_comm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/blt/mmap_comm" "work/ex/clippy-test-run/sources/stable/gh/blt/mmap_comm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/blt/mmap_comm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/blt/mmap_comm" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/blt/mmap_comm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/blt/mmap_comm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d0a505789d7e9ba8da6d04b2bf3f1b7e4617e897
[INFO] sha for GitHub repo blt/mmap_comm: d0a505789d7e9ba8da6d04b2bf3f1b7e4617e897
[INFO] validating manifest of blt/mmap_comm 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 blt/mmap_comm 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 blt/mmap_comm
[INFO] finished frobbing blt/mmap_comm
[INFO] frobbed toml for blt/mmap_comm written to work/ex/clippy-test-run/sources/stable/gh/blt/mmap_comm/Cargo.toml
[INFO] started frobbing blt/mmap_comm
[INFO] finished frobbing blt/mmap_comm
[INFO] frobbed toml for blt/mmap_comm written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/blt/mmap_comm/Cargo.toml
[INFO] crate blt/mmap_comm has a lockfile. skipping
[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 blt/mmap_comm against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/blt/mmap_comm:/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 -Dclippy::into_iter_on_array" "-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] 6c2ef4ec2c0a6b86304119f32aa81b54a52beb403cd1d39b5eb5a3a797b246ed
[INFO] running `"docker" "start" "-a" "6c2ef4ec2c0a6b86304119f32aa81b54a52beb403cd1d39b5eb5a3a797b246ed"`
[INFO] [stderr]     Checking quantiles v0.7.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking mmap_comm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/main.rs:27:29
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn delay(attempts: u32) -> () {
[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/main.rs:171:47
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn validate(rcv: (u64, u64), snd: (u64, 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: digits grouped inconsistently by underscores
[INFO] [stderr]    --> src/main.rs:243:83
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                                                   ^^^^^^^^^^^^^^ help: consider: `1_000_000_000.0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::inconsistent_digit_grouping)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: digits grouped inconsistently by underscores
[INFO] [stderr]    --> src/main.rs:263:83
[INFO] [stderr]     |
[INFO] [stderr] 263 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                                                   ^^^^^^^^^^^^^^ help: consider: `1_000_000_000.0`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/main.rs:27:29
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn delay(attempts: u32) -> () {
[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/main.rs:171:47
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn validate(rcv: (u64, u64), snd: (u64, 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: digits grouped inconsistently by underscores
[INFO] [stderr]    --> src/main.rs:243:83
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                                                   ^^^^^^^^^^^^^^ help: consider: `1_000_000_000.0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::inconsistent_digit_grouping)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: digits grouped inconsistently by underscores
[INFO] [stderr]    --> src/main.rs:263:83
[INFO] [stderr]     |
[INFO] [stderr] 263 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                                                   ^^^^^^^^^^^^^^ help: consider: `1_000_000_000.0`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:243:51
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(elapsed.subsec_nanos())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:263:51
[INFO] [stderr]     |
[INFO] [stderr] 263 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(elapsed.subsec_nanos())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:243:51
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(elapsed.subsec_nanos())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:263:51
[INFO] [stderr]     |
[INFO] [stderr] 263 |                     (elapsed.as_secs() as f64) + (elapsed.subsec_nanos() as f64 / 1000_000_000.0),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(elapsed.subsec_nanos())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `"docker" "inspect" "6c2ef4ec2c0a6b86304119f32aa81b54a52beb403cd1d39b5eb5a3a797b246ed"`
[INFO] running `"docker" "rm" "-f" "6c2ef4ec2c0a6b86304119f32aa81b54a52beb403cd1d39b5eb5a3a797b246ed"`
[INFO] [stdout] 6c2ef4ec2c0a6b86304119f32aa81b54a52beb403cd1d39b5eb5a3a797b246ed