[INFO] crate shelf 0.2.2 is already in cache
[INFO] extracting crate shelf 0.2.2 into work/ex/clippy-test-run/sources/stable/reg/shelf/0.2.2
[INFO] extracting crate shelf 0.2.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/shelf/0.2.2
[INFO] validating manifest of shelf-0.2.2 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 shelf-0.2.2 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 shelf-0.2.2
[INFO] finished frobbing shelf-0.2.2
[INFO] frobbed toml for shelf-0.2.2 written to work/ex/clippy-test-run/sources/stable/reg/shelf/0.2.2/Cargo.toml
[INFO] started frobbing shelf-0.2.2
[INFO] finished frobbing shelf-0.2.2
[INFO] frobbed toml for shelf-0.2.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/shelf/0.2.2/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 shelf-0.2.2 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/reg/shelf/0.2.2:/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 -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] 33b50dc857a0be63cace54d89e1b079507a1cbfb4b6d62e23e7403c3ab1bbbc9
[INFO] running `"docker" "start" "-a" "33b50dc857a0be63cace54d89e1b079507a1cbfb4b6d62e23e7403c3ab1bbbc9"`
[INFO] [stderr]     Checking shelf v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/shelf.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |   pub fn set(&self, key: &str, value: &str) -> () {
[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/shelf.rs:43:35
[INFO] [stderr]    |
[INFO] [stderr] 43 |   pub fn delete(&self, key: &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: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/shelf.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     entry.write(value.as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/shelf.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | /     match fs::remove_file(path) {
[INFO] [stderr] 48 | |       Err(why) => println!("{}", why),
[INFO] [stderr] 49 | |       Ok(_) => ()
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Err(why) = fs::remove_file(path) { println!("{}", why) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/shelf.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 | /       match self.get(&entry.unwrap().file_name().into_string().unwrap()) {
[INFO] [stderr] 68 | |         Some(value) => values.push(value),
[INFO] [stderr] 69 | |         None => ()
[INFO] [stderr] 70 | |       }
[INFO] [stderr]    | |_______^ help: try this: `if let Some(value) = self.get(&entry.unwrap().file_name().into_string().unwrap()) { values.push(value) }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `shelf`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/shelf.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |   pub fn set(&self, key: &str, value: &str) -> () {
[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/shelf.rs:43:35
[INFO] [stderr]    |
[INFO] [stderr] 43 |   pub fn delete(&self, key: &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: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/shelf.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     entry.write(value.as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/shelf.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | /     match fs::remove_file(path) {
[INFO] [stderr] 48 | |       Err(why) => println!("{}", why),
[INFO] [stderr] 49 | |       Ok(_) => ()
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Err(why) = fs::remove_file(path) { println!("{}", why) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/shelf.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 | /       match self.get(&entry.unwrap().file_name().into_string().unwrap()) {
[INFO] [stderr] 68 | |         Some(value) => values.push(value),
[INFO] [stderr] 69 | |         None => ()
[INFO] [stderr] 70 | |       }
[INFO] [stderr]    | |_______^ help: try this: `if let Some(value) = self.get(&entry.unwrap().file_name().into_string().unwrap()) { values.push(value) }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `shelf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "33b50dc857a0be63cace54d89e1b079507a1cbfb4b6d62e23e7403c3ab1bbbc9"`
[INFO] running `"docker" "rm" "-f" "33b50dc857a0be63cace54d89e1b079507a1cbfb4b6d62e23e7403c3ab1bbbc9"`
[INFO] [stdout] 33b50dc857a0be63cace54d89e1b079507a1cbfb4b6d62e23e7403c3ab1bbbc9