[INFO] crate mio-utun 0.6.19 is already in cache
[INFO] extracting crate mio-utun 0.6.19 into work/ex/clippy-test-run/sources/stable/reg/mio-utun/0.6.19
[INFO] extracting crate mio-utun 0.6.19 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mio-utun/0.6.19
[INFO] validating manifest of mio-utun-0.6.19 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 mio-utun-0.6.19 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 mio-utun-0.6.19
[INFO] finished frobbing mio-utun-0.6.19
[INFO] frobbed toml for mio-utun-0.6.19 written to work/ex/clippy-test-run/sources/stable/reg/mio-utun/0.6.19/Cargo.toml
[INFO] started frobbing mio-utun-0.6.19
[INFO] finished frobbing mio-utun-0.6.19
[INFO] frobbed toml for mio-utun-0.6.19 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mio-utun/0.6.19/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 mio-utun-0.6.19 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/mio-utun/0.6.19:/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] 4d5cde02fa4e3adae4d7963250ea9a3a7fc06d0f1ad962abb35ffe5363210231
[INFO] running `"docker" "start" "-a" "4d5cde02fa4e3adae4d7963250ea9a3a7fc06d0f1ad962abb35ffe5363210231"`
[INFO] [stderr]     Checking mio-utun v0.6.19 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/linux.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |         return Ok(UtunStream { fd })
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(UtunStream { fd })`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/linux.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |         return Ok(UtunStream { fd })
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(UtunStream { fd })`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] error: casting from `*mut [u8; 40]` to a more-strictly-aligned pointer (`*mut i32`)
[INFO] [stderr]   --> src/linux.rs:65:32
[INFO] [stderr]    |
[INFO] [stderr] 65 |         unsafe { tunsetiff(fd, &mut req as *mut _ as *mut _) }
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::cast_ptr_alignment)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_ptr_alignment
[INFO] [stderr] 
[INFO] [stderr] error: casting from `*mut u8` to a more-strictly-aligned pointer (`*mut u32`)
[INFO] [stderr]   --> src/linux.rs:75:47
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let res = unsafe { tungetiff(self.fd, buf.as_mut_ptr() as *mut u32) };
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_ptr_alignment
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/linux.rs:128:12
[INFO] [stderr]     |
[INFO] [stderr] 128 |         if buf.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/linux.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |         if buf.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mio-utun`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: casting from `*mut [u8; 40]` to a more-strictly-aligned pointer (`*mut i32`)
[INFO] [stderr]   --> src/linux.rs:65:32
[INFO] [stderr]    |
[INFO] [stderr] 65 |         unsafe { tunsetiff(fd, &mut req as *mut _ as *mut _) }
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::cast_ptr_alignment)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_ptr_alignment
[INFO] [stderr] 
[INFO] [stderr] error: casting from `*mut u8` to a more-strictly-aligned pointer (`*mut u32`)
[INFO] [stderr]   --> src/linux.rs:75:47
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let res = unsafe { tungetiff(self.fd, buf.as_mut_ptr() as *mut u32) };
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_ptr_alignment
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/linux.rs:128:12
[INFO] [stderr]     |
[INFO] [stderr] 128 |         if buf.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/linux.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |         if buf.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mio-utun`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4d5cde02fa4e3adae4d7963250ea9a3a7fc06d0f1ad962abb35ffe5363210231"`
[INFO] running `"docker" "rm" "-f" "4d5cde02fa4e3adae4d7963250ea9a3a7fc06d0f1ad962abb35ffe5363210231"`
[INFO] [stdout] 4d5cde02fa4e3adae4d7963250ea9a3a7fc06d0f1ad962abb35ffe5363210231