[INFO] updating cached repository richardjennings/rust_3
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/richardjennings/rust_3
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/richardjennings/rust_3" "work/ex/clippy-test-run/sources/stable/gh/richardjennings/rust_3"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/richardjennings/rust_3'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/richardjennings/rust_3" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardjennings/rust_3"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardjennings/rust_3'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c63311a69dda87ca0356bfe213ff01cf6424c80b
[INFO] sha for GitHub repo richardjennings/rust_3: c63311a69dda87ca0356bfe213ff01cf6424c80b
[INFO] validating manifest of richardjennings/rust_3 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 richardjennings/rust_3 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 richardjennings/rust_3
[INFO] finished frobbing richardjennings/rust_3
[INFO] frobbed toml for richardjennings/rust_3 written to work/ex/clippy-test-run/sources/stable/gh/richardjennings/rust_3/Cargo.toml
[INFO] started frobbing richardjennings/rust_3
[INFO] finished frobbing richardjennings/rust_3
[INFO] frobbed toml for richardjennings/rust_3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardjennings/rust_3/Cargo.toml
[INFO] crate richardjennings/rust_3 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 richardjennings/rust_3 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-3/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/richardjennings/rust_3:/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] 15ac500e9027b9d6437ed20e178e5d17d3027b85710263c5f051e0adbf9618a4
[INFO] running `"docker" "start" "-a" "15ac500e9027b9d6437ed20e178e5d17d3027b85710263c5f051e0adbf9618a4"`
[INFO] [stderr]     Checking rust_3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |     let c = 'z'; //char is a 'Unicode scalar value',
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let z = 'ℤ';
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let a = [1u32, 2, 3, 4, 5]; //also specifies type u32 for all elements
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |     let c = 'z'; //char is a 'Unicode scalar value',
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let z = 'ℤ';
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let a = [1u32, 2, 3, 4, 5]; //also specifies type u32 for all elements
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:285:5
[INFO] [stderr]     |
[INFO] [stderr] 285 |     nth
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:274:15
[INFO] [stderr]     |
[INFO] [stderr] 274 |       let nth = match n {
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 275 | |         0 => { 0 }
[INFO] [stderr] 276 | |         1 => { 1 }
[INFO] [stderr] 277 | |         _ => {
[INFO] [stderr] ...   |
[INFO] [stderr] 283 | |         }
[INFO] [stderr] 284 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:285:5
[INFO] [stderr]     |
[INFO] [stderr] 285 |     nth
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:274:15
[INFO] [stderr]     |
[INFO] [stderr] 274 |       let nth = match n {
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 275 | |         0 => { 0 }
[INFO] [stderr] 276 | |         1 => { 1 }
[INFO] [stderr] 277 | |         _ => {
[INFO] [stderr] ...   |
[INFO] [stderr] 283 | |         }
[INFO] [stderr] 284 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/main.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 | /     loop { // indefinite
[INFO] [stderr] 211 | |         println!("again!");
[INFO] [stderr] 212 | |         break; // end
[INFO] [stderr] 213 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:222:9
[INFO] [stderr]     |
[INFO] [stderr] 222 |         number = number - 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^ help: replace it with: `number -= 1`
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/main.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 | /     loop { // indefinite
[INFO] [stderr] 211 | |         println!("again!");
[INFO] [stderr] 212 | |         break; // end
[INFO] [stderr] 213 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:222:9
[INFO] [stderr]     |
[INFO] [stderr] 222 |         number = number - 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^ help: replace it with: `number -= 1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |         index = index + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: replace it with: `index += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |         index = index + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: replace it with: `index += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_3`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rust_3`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "15ac500e9027b9d6437ed20e178e5d17d3027b85710263c5f051e0adbf9618a4"`
[INFO] running `"docker" "rm" "-f" "15ac500e9027b9d6437ed20e178e5d17d3027b85710263c5f051e0adbf9618a4"`
[INFO] [stdout] 15ac500e9027b9d6437ed20e178e5d17d3027b85710263c5f051e0adbf9618a4