[INFO] crate colorful 0.1.0 is already in cache
[INFO] extracting crate colorful 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/colorful/0.1.0
[INFO] extracting crate colorful 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/colorful/0.1.0
[INFO] validating manifest of colorful-0.1.0 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 colorful-0.1.0 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 colorful-0.1.0
[INFO] finished frobbing colorful-0.1.0
[INFO] frobbed toml for colorful-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/colorful/0.1.0/Cargo.toml
[INFO] started frobbing colorful-0.1.0
[INFO] finished frobbing colorful-0.1.0
[INFO] frobbed toml for colorful-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/colorful/0.1.0/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 colorful-0.1.0 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-0/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/colorful/0.1.0:/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] 267ea59d3ba7dd0f1f450252d5a9cb2d1d8e8e5da859e185c84046a124e941ad
[INFO] running `"docker" "start" "-a" "267ea59d3ba7dd0f1f450252d5a9cb2d1d8e8e5da859e185c84046a124e941ad"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking colorful v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/lib.rs:157:14
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:157:20
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:162:14
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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: 6th binding whose name is just one char
[INFO] [stderr]    --> src/lib.rs:162:17
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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/lib.rs:162:20
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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/lib.rs:157:14
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:157:20
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let (r, g, b) = c.unpack();
[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/lib.rs:162:14
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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: 6th binding whose name is just one char
[INFO] [stderr]    --> src/lib.rs:162:17
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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/lib.rs:162:20
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let (r, g, b) = c.unpack();
[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: unused import: `std::fmt::Display`
[INFO] [stderr]  --> src/core/colors.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Formatter`
[INFO] [stderr]  --> src/core/colors.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Formatter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Result as FmtResult`
[INFO] [stderr]  --> src/core/colors.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt::Result as FmtResult;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]  --> src/core/colors.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Formatter`
[INFO] [stderr]  --> src/core/colors.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Formatter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Result as FmtResult`
[INFO] [stderr]  --> src/core/colors.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt::Result as FmtResult;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:579:9
[INFO] [stderr]     |
[INFO] [stderr] 579 |     let mut red: f32;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:580:9
[INFO] [stderr]     |
[INFO] [stderr] 580 |     let mut green: f32;
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:581:9
[INFO] [stderr]     |
[INFO] [stderr] 581 |     let mut blue: f32;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:267:9
[INFO] [stderr]     |
[INFO] [stderr] 267 | /         format!("{}",
[INFO] [stderr] 268 | |                 match self {
[INFO] [stderr] 269 | |                     Color::Black => "0",
[INFO] [stderr] 270 | |                     Color::Red => "1",
[INFO] [stderr] ...   |
[INFO] [stderr] 525 | |                 }
[INFO] [stderr] 526 | |         )
[INFO] [stderr]     | |_________^
[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] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 2   | $ crate :: fmt :: format ( match self {
[INFO] [stderr] 3   |                     Color::Black => "0",
[INFO] [stderr] 4   |                     Color::Red => "1",
[INFO] [stderr] 5   |                     Color::Green => "2",
[INFO] [stderr] 6   |                     Color::Yellow => "3",
[INFO] [stderr] 7   |                     Color::Blue => "4",
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/core/colors.rs:551:19
[INFO] [stderr]     |
[INFO] [stderr] 551 |     pub fn unpack(&self) -> (u8, u8, u8) {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/core/colors.rs:597:54
[INFO] [stderr]     |
[INFO] [stderr] 597 |         green = 255.0 * hue_2_rgb(var_1, var_2, &mut hsl.h.clone());
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^ help: try removing the `clone` call: `hsl.h`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:647:17
[INFO] [stderr]     |
[INFO] [stderr] 647 |         let c = format!("{}", color.to_string());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `color.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:649:20
[INFO] [stderr]     |
[INFO] [stderr] 649 |             color: format!("{}", color.to_string()),
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `color.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/core/colors.rs:650:33
[INFO] [stderr]     |
[INFO] [stderr] 650 |             mode: if c.contains(";") {
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `';'`
[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] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/core/style.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn to_str(&self) -> &'static str {
[INFO] [stderr]    |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/core/style.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn to_string(&self) -> String {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:133:19
[INFO] [stderr]     |
[INFO] [stderr] 133 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:141:19
[INFO] [stderr]     |
[INFO] [stderr] 141 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:149:19
[INFO] [stderr]     |
[INFO] [stderr] 149 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:167:19
[INFO] [stderr]     |
[INFO] [stderr] 167 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[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/lib.rs:227:13
[INFO] [stderr]     |
[INFO] [stderr] 227 | /             match &self.fg_color {
[INFO] [stderr] 228 | |                 Some(v) => {
[INFO] [stderr] 229 | |                     is_colored = true;
[INFO] [stderr] 230 | |                     match v.mode {
[INFO] [stderr] ...   |
[INFO] [stderr] 241 | |                 _ => {}
[INFO] [stderr] 242 | |             }
[INFO] [stderr]     | |_____________^
[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] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 227 |             if let Some(v) = &self.fg_color {
[INFO] [stderr] 228 |     is_colored = true;
[INFO] [stderr] 229 |     match v.mode {
[INFO] [stderr] 230 |         ColorMode::SIMPLE => {
[INFO] [stderr] 231 |             f.write_str(Symbol::Simple256Foreground.to_str())?;
[INFO] [stderr] 232 |         }
[INFO] [stderr]   ...
[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/lib.rs:243:13
[INFO] [stderr]     |
[INFO] [stderr] 243 | /             match &self.bg_color {
[INFO] [stderr] 244 | |                 Some(v) => {
[INFO] [stderr] 245 | |                     if is_colored {
[INFO] [stderr] 246 | |                         f.write_str(Symbol::Mode.to_str())?;
[INFO] [stderr] ...   |
[INFO] [stderr] 261 | |                 _ => {}
[INFO] [stderr] 262 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 243 |             if let Some(v) = &self.bg_color {
[INFO] [stderr] 244 |     if is_colored {
[INFO] [stderr] 245 |         f.write_str(Symbol::Mode.to_str())?;
[INFO] [stderr] 246 |     } else {
[INFO] [stderr] 247 |         is_colored = true;
[INFO] [stderr] 248 |     }
[INFO] [stderr]   ...
[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/lib.rs:264:13
[INFO] [stderr]     |
[INFO] [stderr] 264 | /             match &self.styles {
[INFO] [stderr] 265 | |                 Some(v) => {
[INFO] [stderr] 266 | |                     if !is_colored { // pure style without color
[INFO] [stderr] 267 | |                         write!(f, "{}{}", Symbol::Esc, Symbol::LeftBrackets)?;
[INFO] [stderr] ...   |
[INFO] [stderr] 274 | |                 _ => {}
[INFO] [stderr] 275 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 264 |             if let Some(v) = &self.styles {
[INFO] [stderr] 265 |     if !is_colored { // pure style without color
[INFO] [stderr] 266 |         write!(f, "{}{}", Symbol::Esc, Symbol::LeftBrackets)?;
[INFO] [stderr] 267 |     } else {
[INFO] [stderr] 268 |         f.write_str(Symbol::Semicolon.to_str())?;
[INFO] [stderr] 269 |     }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]    --> src/lib.rs:271:44
[INFO] [stderr]     |
[INFO] [stderr] 271 |                     let t: Vec<String> = v.into_iter().map(|x| x.to_string()).collect();
[INFO] [stderr]     |                                            ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:579:9
[INFO] [stderr]     |
[INFO] [stderr] 579 |     let mut red: f32;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:580:9
[INFO] [stderr]     |
[INFO] [stderr] 580 |     let mut green: f32;
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/core/colors.rs:581:9
[INFO] [stderr]     |
[INFO] [stderr] 581 |     let mut blue: f32;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:267:9
[INFO] [stderr]     |
[INFO] [stderr] 267 | /         format!("{}",
[INFO] [stderr] 268 | |                 match self {
[INFO] [stderr] 269 | |                     Color::Black => "0",
[INFO] [stderr] 270 | |                     Color::Red => "1",
[INFO] [stderr] ...   |
[INFO] [stderr] 525 | |                 }
[INFO] [stderr] 526 | |         )
[INFO] [stderr]     | |_________^
[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] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 2   | $ crate :: fmt :: format ( match self {
[INFO] [stderr] 3   |                     Color::Black => "0",
[INFO] [stderr] 4   |                     Color::Red => "1",
[INFO] [stderr] 5   |                     Color::Green => "2",
[INFO] [stderr] 6   |                     Color::Yellow => "3",
[INFO] [stderr] 7   |                     Color::Blue => "4",
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/core/colors.rs:551:19
[INFO] [stderr]     |
[INFO] [stderr] 551 |     pub fn unpack(&self) -> (u8, u8, u8) {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/core/colors.rs:597:54
[INFO] [stderr]     |
[INFO] [stderr] 597 |         green = 255.0 * hue_2_rgb(var_1, var_2, &mut hsl.h.clone());
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^ help: try removing the `clone` call: `hsl.h`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:647:17
[INFO] [stderr]     |
[INFO] [stderr] 647 |         let c = format!("{}", color.to_string());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `color.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/core/colors.rs:649:20
[INFO] [stderr]     |
[INFO] [stderr] 649 |             color: format!("{}", color.to_string()),
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `color.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/core/colors.rs:650:33
[INFO] [stderr]     |
[INFO] [stderr] 650 |             mode: if c.contains(";") {
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `';'`
[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] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/core/style.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn to_str(&self) -> &'static str {
[INFO] [stderr]    |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/core/style.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn to_string(&self) -> String {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:133:19
[INFO] [stderr]     |
[INFO] [stderr] 133 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:141:19
[INFO] [stderr]     |
[INFO] [stderr] 141 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:149:19
[INFO] [stderr]     |
[INFO] [stderr] 149 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lib.rs:167:19
[INFO] [stderr]     |
[INFO] [stderr] 167 |             text: String::from(self.to_str()),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `self.to_str()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[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/lib.rs:227:13
[INFO] [stderr]     |
[INFO] [stderr] 227 | /             match &self.fg_color {
[INFO] [stderr] 228 | |                 Some(v) => {
[INFO] [stderr] 229 | |                     is_colored = true;
[INFO] [stderr] 230 | |                     match v.mode {
[INFO] [stderr] ...   |
[INFO] [stderr] 241 | |                 _ => {}
[INFO] [stderr] 242 | |             }
[INFO] [stderr]     | |_____________^
[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] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 227 |             if let Some(v) = &self.fg_color {
[INFO] [stderr] 228 |     is_colored = true;
[INFO] [stderr] 229 |     match v.mode {
[INFO] [stderr] 230 |         ColorMode::SIMPLE => {
[INFO] [stderr] 231 |             f.write_str(Symbol::Simple256Foreground.to_str())?;
[INFO] [stderr] 232 |         }
[INFO] [stderr]   ...
[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/lib.rs:243:13
[INFO] [stderr]     |
[INFO] [stderr] 243 | /             match &self.bg_color {
[INFO] [stderr] 244 | |                 Some(v) => {
[INFO] [stderr] 245 | |                     if is_colored {
[INFO] [stderr] 246 | |                         f.write_str(Symbol::Mode.to_str())?;
[INFO] [stderr] ...   |
[INFO] [stderr] 261 | |                 _ => {}
[INFO] [stderr] 262 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 243 |             if let Some(v) = &self.bg_color {
[INFO] [stderr] 244 |     if is_colored {
[INFO] [stderr] 245 |         f.write_str(Symbol::Mode.to_str())?;
[INFO] [stderr] 246 |     } else {
[INFO] [stderr] 247 |         is_colored = true;
[INFO] [stderr] 248 |     }
[INFO] [stderr]   ...
[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/lib.rs:264:13
[INFO] [stderr]     |
[INFO] [stderr] 264 | /             match &self.styles {
[INFO] [stderr] 265 | |                 Some(v) => {
[INFO] [stderr] 266 | |                     if !is_colored { // pure style without color
[INFO] [stderr] 267 | |                         write!(f, "{}{}", Symbol::Esc, Symbol::LeftBrackets)?;
[INFO] [stderr] ...   |
[INFO] [stderr] 274 | |                 _ => {}
[INFO] [stderr] 275 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 264 |             if let Some(v) = &self.styles {
[INFO] [stderr] 265 |     if !is_colored { // pure style without color
[INFO] [stderr] 266 |         write!(f, "{}{}", Symbol::Esc, Symbol::LeftBrackets)?;
[INFO] [stderr] 267 |     } else {
[INFO] [stderr] 268 |         f.write_str(Symbol::Semicolon.to_str())?;
[INFO] [stderr] 269 |     }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]    --> src/lib.rs:271:44
[INFO] [stderr]     |
[INFO] [stderr] 271 |                     let t: Vec<String> = v.into_iter().map(|x| x.to_string()).collect();
[INFO] [stderr]     |                                            ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "267ea59d3ba7dd0f1f450252d5a9cb2d1d8e8e5da859e185c84046a124e941ad"`
[INFO] running `"docker" "rm" "-f" "267ea59d3ba7dd0f1f450252d5a9cb2d1d8e8e5da859e185c84046a124e941ad"`
[INFO] [stdout] 267ea59d3ba7dd0f1f450252d5a9cb2d1d8e8e5da859e185c84046a124e941ad