[INFO] crate byte_channel 0.0.1 is already in cache
[INFO] extracting crate byte_channel 0.0.1 into work/ex/clippy-test-run/sources/stable/reg/byte_channel/0.0.1
[INFO] extracting crate byte_channel 0.0.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/byte_channel/0.0.1
[INFO] validating manifest of byte_channel-0.0.1 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 byte_channel-0.0.1 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 byte_channel-0.0.1
[INFO] finished frobbing byte_channel-0.0.1
[INFO] frobbed toml for byte_channel-0.0.1 written to work/ex/clippy-test-run/sources/stable/reg/byte_channel/0.0.1/Cargo.toml
[INFO] started frobbing byte_channel-0.0.1
[INFO] finished frobbing byte_channel-0.0.1
[INFO] frobbed toml for byte_channel-0.0.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/byte_channel/0.0.1/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 byte_channel-0.0.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/byte_channel/0.0.1:/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] 39ed20f8fe07f9d7dcf466c023e9876b755d61dd9c3b0f5106b42ab9326e0430
[INFO] running `"docker" "start" "-a" "39ed20f8fe07f9d7dcf466c023e9876b755d61dd9c3b0f5106b42ab9326e0430"`
[INFO] [stderr]     Checking test_futures v0.0.1
[INFO] [stderr]     Checking byte_channel v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: item `sync::chunk::Chunk` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/sync/chunk.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | / impl Chunk {
[INFO] [stderr] 52 | |     pub fn len(&self) -> usize {
[INFO] [stderr] 53 | |         match self.bytes {
[INFO] [stderr] 54 | |             ChunkBytes::Zero => 0,
[INFO] [stderr] ...  |
[INFO] [stderr] 68 | |     }
[INFO] [stderr] 69 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing.
[INFO] [stderr]    --> src/sync/chunk.rs:129:21
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     drop(bytes);
[INFO] [stderr]     |                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::drop_ref)] on by default
[INFO] [stderr] note: argument has type &mut bytes::Bytes
[INFO] [stderr]    --> src/sync/chunk.rs:129:26
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     drop(bytes);
[INFO] [stderr]     |                          ^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#drop_ref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `byte_channel`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:2:18
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[cfg_attr(test, macro_use)]
[INFO] [stderr]   |                  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: item `sync::chunk::Chunk` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/sync/chunk.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | / impl Chunk {
[INFO] [stderr] 52 | |     pub fn len(&self) -> usize {
[INFO] [stderr] 53 | |         match self.bytes {
[INFO] [stderr] 54 | |             ChunkBytes::Zero => 0,
[INFO] [stderr] ...  |
[INFO] [stderr] 68 | |     }
[INFO] [stderr] 69 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing.
[INFO] [stderr]    --> src/sync/chunk.rs:129:21
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     drop(bytes);
[INFO] [stderr]     |                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::drop_ref)] on by default
[INFO] [stderr] note: argument has type &mut bytes::Bytes
[INFO] [stderr]    --> src/sync/chunk.rs:129:26
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     drop(bytes);
[INFO] [stderr]     |                          ^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#drop_ref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `byte_channel`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "39ed20f8fe07f9d7dcf466c023e9876b755d61dd9c3b0f5106b42ab9326e0430"`
[INFO] running `"docker" "rm" "-f" "39ed20f8fe07f9d7dcf466c023e9876b755d61dd9c3b0f5106b42ab9326e0430"`
[INFO] [stdout] 39ed20f8fe07f9d7dcf466c023e9876b755d61dd9c3b0f5106b42ab9326e0430