[INFO] updating cached repository vigneshsarma/sudoku.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vigneshsarma/sudoku.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vigneshsarma/sudoku.rs" "work/ex/clippy-test-run/sources/stable/gh/vigneshsarma/sudoku.rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/vigneshsarma/sudoku.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vigneshsarma/sudoku.rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vigneshsarma/sudoku.rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vigneshsarma/sudoku.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 23047de68c46fa90149140905b3471629cd000b7
[INFO] sha for GitHub repo vigneshsarma/sudoku.rs: 23047de68c46fa90149140905b3471629cd000b7
[INFO] validating manifest of vigneshsarma/sudoku.rs 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 vigneshsarma/sudoku.rs 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 vigneshsarma/sudoku.rs
[INFO] finished frobbing vigneshsarma/sudoku.rs
[INFO] frobbed toml for vigneshsarma/sudoku.rs written to work/ex/clippy-test-run/sources/stable/gh/vigneshsarma/sudoku.rs/Cargo.toml
[INFO] started frobbing vigneshsarma/sudoku.rs
[INFO] finished frobbing vigneshsarma/sudoku.rs
[INFO] frobbed toml for vigneshsarma/sudoku.rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vigneshsarma/sudoku.rs/Cargo.toml
[INFO] crate vigneshsarma/sudoku.rs 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 vigneshsarma/sudoku.rs 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/gh/vigneshsarma/sudoku.rs:/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] 7b1df80d46951c7ecdb85c35a0506aa1c055c05e12aaf9361fe7f5665320c81b
[INFO] running `"docker" "start" "-a" "7b1df80d46951c7ecdb85c35a0506aa1c055c05e12aaf9361fe7f5665320c81b"`
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/main.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Axis{len: 0, i: i, present: [false; 9]}
[INFO] [stderr]    |                      ^^^^ help: replace it with: `i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/main.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |         write!(f, "Axis {{{} ->  {}, {:?}}}\n", self.i, self.len, self.present)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/main.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Axis{len: 0, i: i, present: [false; 9]}
[INFO] [stderr]    |                      ^^^^ help: replace it with: `i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/main.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |         write!(f, "Axis {{{} ->  {}, {:?}}}\n", self.i, self.len, self.present)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:200:24
[INFO] [stderr]     |
[INFO] [stderr] 200 |                   } else {
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 201 | |                     if possible.len() < 3 {
[INFO] [stderr] 202 | |                         return (i, j, possible)
[INFO] [stderr] 203 | |                     } else {
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | |                     }
[INFO] [stderr] 211 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 200 |                 } else if possible.len() < 3 {
[INFO] [stderr] 201 |     return (i, j, possible)
[INFO] [stderr] 202 | } else {
[INFO] [stderr] 203 |     if possible.len() > 0 && (
[INFO] [stderr] 204 |         min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 205 |         r = i;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:203:28
[INFO] [stderr]     |
[INFO] [stderr] 203 |                       } else {
[INFO] [stderr]     |  ____________________________^
[INFO] [stderr] 204 | |                         if possible.len() > 0 && (
[INFO] [stderr] 205 | |                             min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 206 | |                             r = i;
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |                         }
[INFO] [stderr] 210 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 203 |                     } else if possible.len() > 0 && (
[INFO] [stderr] 204 |     min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 205 |     r = i;
[INFO] [stderr] 206 |     c = j;
[INFO] [stderr] 207 |     min = possible;
[INFO] [stderr] 208 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:200:24
[INFO] [stderr]     |
[INFO] [stderr] 200 |                   } else {
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 201 | |                     if possible.len() < 3 {
[INFO] [stderr] 202 | |                         return (i, j, possible)
[INFO] [stderr] 203 | |                     } else {
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | |                     }
[INFO] [stderr] 211 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 200 |                 } else if possible.len() < 3 {
[INFO] [stderr] 201 |     return (i, j, possible)
[INFO] [stderr] 202 | } else {
[INFO] [stderr] 203 |     if possible.len() > 0 && (
[INFO] [stderr] 204 |         min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 205 |         r = i;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:203:28
[INFO] [stderr]     |
[INFO] [stderr] 203 |                       } else {
[INFO] [stderr]     |  ____________________________^
[INFO] [stderr] 204 | |                         if possible.len() > 0 && (
[INFO] [stderr] 205 | |                             min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 206 | |                             r = i;
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |                         }
[INFO] [stderr] 210 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 203 |                     } else if possible.len() > 0 && (
[INFO] [stderr] 204 |     min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr] 205 |     r = i;
[INFO] [stderr] 206 |     c = j;
[INFO] [stderr] 207 |     min = possible;
[INFO] [stderr] 208 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |         if self.present[(val-1) as usize] == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!self.present[(val-1) as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |         if self.present[(val-1) as usize] == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!self.present[(val-1) as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `k` is used to index `recorder`
[INFO] [stderr]    --> src/main.rs:160:26
[INFO] [stderr]     |
[INFO] [stderr] 160 |                 for k in 0..9 { // iter over possible values
[INFO] [stderr]     |                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 160 |                 for (k, <item>) in recorder.iter().enumerate() { // iter over possible values
[INFO] [stderr]     |                     ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `k` is used to index `recorder`
[INFO] [stderr]    --> src/main.rs:160:26
[INFO] [stderr]     |
[INFO] [stderr] 160 |                 for k in 0..9 { // iter over possible values
[INFO] [stderr]     |                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 160 |                 for (k, <item>) in recorder.iter().enumerate() { // iter over possible values
[INFO] [stderr]     |                     ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:162:29
[INFO] [stderr]     |
[INFO] [stderr] 162 |                         let ref mut locations = recorder[k];
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^^^^^--------------- help: try: `let locations = &mut recorder[k];`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:162:29
[INFO] [stderr]     |
[INFO] [stderr] 162 |                         let ref mut locations = recorder[k];
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^^^^^--------------- help: try: `let locations = &mut recorder[k];`
[INFO] [stderr] warning: the loop variable `k` is used to index `recorder`
[INFO] [stderr]     |
[INFO] [stderr]    --> src/main.rs:167:22
[INFO] [stderr]     |
[INFO] [stderr] 167 |             for k in 0..9 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `k` is used to index `recorder`
[INFO] [stderr]    --> src/main.rs:167:22
[INFO] [stderr]     |
[INFO] [stderr] 167 |             for k in 0..9 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 167 |             for (k, <item>) in recorder.iter().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:168:21
[INFO] [stderr]     |
[INFO] [stderr] 168 |                 let ref locations = recorder[k];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^--------------- help: try: `let locations = &recorder[k];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 167 |             for (k, <item>) in recorder.iter().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:168:21
[INFO] [stderr]     |
[INFO] [stderr] 168 |                 let ref locations = recorder[k];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^--------------- help: try: `let locations = &recorder[k];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:199:28
[INFO] [stderr]     |
[INFO] [stderr] 199 |                     panic!(format!("you have more options before calling me."))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"you have more options before calling me.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:204:28
[INFO] [stderr]     |
[INFO] [stderr] 204 |                         if possible.len() > 0 && (
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!possible.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/main.rs:205:29
[INFO] [stderr]     |
[INFO] [stderr] 205 |                             min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `min.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] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:199:28
[INFO] [stderr]     |
[INFO] [stderr] 199 |                     panic!(format!("you have more options before calling me."))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"you have more options before calling me.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:204:28
[INFO] [stderr]     |
[INFO] [stderr] 204 |                         if possible.len() > 0 && (
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!possible.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/main.rs:205:29
[INFO] [stderr]     |
[INFO] [stderr] 205 |                             min.len() == 0 || min.len() > possible.len()){
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `min.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] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:401:44
[INFO] [stderr]     |
[INFO] [stderr] 401 |         let game_strs: Vec<&str> = s.split("\n").collect();
[INFO] [stderr]     |                                            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "7b1df80d46951c7ecdb85c35a0506aa1c055c05e12aaf9361fe7f5665320c81b"`
[INFO] running `"docker" "rm" "-f" "7b1df80d46951c7ecdb85c35a0506aa1c055c05e12aaf9361fe7f5665320c81b"`
[INFO] [stdout] 7b1df80d46951c7ecdb85c35a0506aa1c055c05e12aaf9361fe7f5665320c81b