[INFO] updating cached repository srusskih/karacybi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/srusskih/karacybi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/srusskih/karacybi" "work/ex/clippy-test-run/sources/stable/gh/srusskih/karacybi"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/srusskih/karacybi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/srusskih/karacybi" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/srusskih/karacybi"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/srusskih/karacybi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6ecd8a6022f62f807f1bbfe0f2bf297c6797996
[INFO] sha for GitHub repo srusskih/karacybi: a6ecd8a6022f62f807f1bbfe0f2bf297c6797996
[INFO] validating manifest of srusskih/karacybi 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 srusskih/karacybi 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 srusskih/karacybi
[INFO] finished frobbing srusskih/karacybi
[INFO] frobbed toml for srusskih/karacybi written to work/ex/clippy-test-run/sources/stable/gh/srusskih/karacybi/Cargo.toml
[INFO] started frobbing srusskih/karacybi
[INFO] finished frobbing srusskih/karacybi
[INFO] frobbed toml for srusskih/karacybi written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/srusskih/karacybi/Cargo.toml
[INFO] crate srusskih/karacybi 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 srusskih/karacybi against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/srusskih/karacybi:/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] e2d49779f6556ad94d5904081fbef84b82f4b1ebbeb4faabacbd2ff571b0a73d
[INFO] running `"docker" "start" "-a" "e2d49779f6556ad94d5904081fbef84b82f4b1ebbeb4faabacbd2ff571b0a73d"`
[INFO] [stderr]     Checking karacybi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let (a, b) = x.split_at(x.len() - n / 2);
[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:174:10
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let (c, d) = y.split_at(y.len() - n / 2);
[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:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let (c, d) = y.split_at(y.len() - n / 2);
[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: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let (a, b) = x.split_at(x.len() - n / 2);
[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:174:10
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let (c, d) = y.split_at(y.len() - n / 2);
[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:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let (c, d) = y.split_at(y.len() - n / 2);
[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: unneeded return statement
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     return if x.len() > y.len() {
[INFO] [stderr] 17 | |         (Box::new(x.to_string()), 
[INFO] [stderr] 18 | |          Box::new(filler.chain(y.chars()).collect::<String>()))
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |          Box::new(y.to_string()))
[INFO] [stderr] 23 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 16 |     if x.len() > y.len() {
[INFO] [stderr] 17 |         (Box::new(x.to_string()), 
[INFO] [stderr] 18 |          Box::new(filler.chain(y.chars()).collect::<String>()))
[INFO] [stderr] 19 |     }
[INFO] [stderr] 20 |     else {
[INFO] [stderr] 21 |         (Box::new(filler.chain(x.chars()).collect::<String>()),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     return (new_x, new_y);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(new_x, new_y)`
[INFO] [stderr]    |
[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/main.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     return new_x;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `new_x`
[INFO] [stderr]    |
[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/main.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     return Box::new(result.trim_left_matches('0').to_string());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(result.trim_left_matches('0').to_string())`
[INFO] [stderr]     |
[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/main.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     return result;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]     |
[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/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 | /     return sum(
[INFO] [stderr] 191 | |         &sum(
[INFO] [stderr] 192 | |             &mul_10n(&ac, (n / 2) * 2),
[INFO] [stderr] 193 | |             &mul_10n(&ad_bc, n / 2)
[INFO] [stderr] 194 | |         ), 
[INFO] [stderr] 195 | |         &bd
[INFO] [stderr] 196 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 190 |     sum(
[INFO] [stderr] 191 |         &sum(
[INFO] [stderr] 192 |             &mul_10n(&ac, (n / 2) * 2),
[INFO] [stderr] 193 |             &mul_10n(&ad_bc, n / 2)
[INFO] [stderr] 194 |         ), 
[INFO] [stderr] 195 |         &bd
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     return if x.len() > y.len() {
[INFO] [stderr] 17 | |         (Box::new(x.to_string()), 
[INFO] [stderr] 18 | |          Box::new(filler.chain(y.chars()).collect::<String>()))
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |          Box::new(y.to_string()))
[INFO] [stderr] 23 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 16 |     if x.len() > y.len() {
[INFO] [stderr] 17 |         (Box::new(x.to_string()), 
[INFO] [stderr] 18 |          Box::new(filler.chain(y.chars()).collect::<String>()))
[INFO] [stderr] 19 |     }
[INFO] [stderr] 20 |     else {
[INFO] [stderr] 21 |         (Box::new(filler.chain(x.chars()).collect::<String>()),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     return (new_x, new_y);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(new_x, new_y)`
[INFO] [stderr]    |
[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/main.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     return new_x;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `new_x`
[INFO] [stderr]    |
[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/main.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     return Box::new(result.trim_left_matches('0').to_string());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(result.trim_left_matches('0').to_string())`
[INFO] [stderr]     |
[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/main.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     return result;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]     |
[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/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 | /     return sum(
[INFO] [stderr] 191 | |         &sum(
[INFO] [stderr] 192 | |             &mul_10n(&ac, (n / 2) * 2),
[INFO] [stderr] 193 | |             &mul_10n(&ad_bc, n / 2)
[INFO] [stderr] 194 | |         ), 
[INFO] [stderr] 195 | |         &bd
[INFO] [stderr] 196 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 190 |     sum(
[INFO] [stderr] 191 |         &sum(
[INFO] [stderr] 192 |             &mul_10n(&ac, (n / 2) * 2),
[INFO] [stderr] 193 |             &mul_10n(&ad_bc, n / 2)
[INFO] [stderr] 194 |         ), 
[INFO] [stderr] 195 |         &bd
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mod2length`
[INFO] [stderr]   --> src/main.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn mod2length(x: &str, y:&str) -> (Box<String>, Box<String>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "e2d49779f6556ad94d5904081fbef84b82f4b1ebbeb4faabacbd2ff571b0a73d"`
[INFO] running `"docker" "rm" "-f" "e2d49779f6556ad94d5904081fbef84b82f4b1ebbeb4faabacbd2ff571b0a73d"`
[INFO] [stdout] e2d49779f6556ad94d5904081fbef84b82f4b1ebbeb4faabacbd2ff571b0a73d