[INFO] crate hamlrs 0.4.2 is already in cache
[INFO] extracting crate hamlrs 0.4.2 into work/ex/clippy-test-run/sources/stable/reg/hamlrs/0.4.2
[INFO] extracting crate hamlrs 0.4.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hamlrs/0.4.2
[INFO] validating manifest of hamlrs-0.4.2 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 hamlrs-0.4.2 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 hamlrs-0.4.2
[INFO] finished frobbing hamlrs-0.4.2
[INFO] frobbed toml for hamlrs-0.4.2 written to work/ex/clippy-test-run/sources/stable/reg/hamlrs/0.4.2/Cargo.toml
[INFO] started frobbing hamlrs-0.4.2
[INFO] finished frobbing hamlrs-0.4.2
[INFO] frobbed toml for hamlrs-0.4.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hamlrs/0.4.2/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 hamlrs-0.4.2 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/reg/hamlrs/0.4.2:/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" "-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] 3627beea7496605ed9c3dc129d67741d05c4cebb2755eb832ca8d429cee70c7f
[INFO] running `"docker" "start" "-a" "3627beea7496605ed9c3dc129d67741d05c4cebb2755eb832ca8d429cee70c7f"`
[INFO] [stderr]     Checking hamlrs v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/scanner.rs:47:16
[INFO] [stderr]    |
[INFO] [stderr] 47 |           } else {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 48 | |             if let Some(ch) = self.chars.next() {
[INFO] [stderr] 49 | |                 current_char = ch;
[INFO] [stderr] 50 | |             } else {
[INFO] [stderr] 51 | |                 return None;
[INFO] [stderr] 52 | |             }
[INFO] [stderr] 53 | |         }
[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] 47 |         } else if let Some(ch) = self.chars.next() {
[INFO] [stderr] 48 |     current_char = ch;
[INFO] [stderr] 49 | } else {
[INFO] [stderr] 50 |     return None;
[INFO] [stderr] 51 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/scanner.rs:143:28
[INFO] [stderr]     |
[INFO] [stderr] 143 |                       } else {
[INFO] [stderr]     |  ____________________________^
[INFO] [stderr] 144 | |                         if Token::is_delim(&next_char) && next_char != '.' {
[INFO] [stderr] 145 | |                             self.current_char = Some(next_char);
[INFO] [stderr] 146 | |                             break;
[INFO] [stderr] ...   |
[INFO] [stderr] 149 | |                         }
[INFO] [stderr] 150 | |                     }
[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] 143 |                     } else if Token::is_delim(&next_char) && next_char != '.' {
[INFO] [stderr] 144 |     self.current_char = Some(next_char);
[INFO] [stderr] 145 |     break;
[INFO] [stderr] 146 | } else {
[INFO] [stderr] 147 |     text_builder.push(next_char);
[INFO] [stderr] 148 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/scanner.rs:154:24
[INFO] [stderr]     |
[INFO] [stderr] 154 |                   } else {
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 155 | |                     if &text_builder == "!!!" {
[INFO] [stderr] 156 | |                         Some(Token::DocType())
[INFO] [stderr] 157 | |                     } else {
[INFO] [stderr] 158 | |                         Some(Token::Text(text_builder))
[INFO] [stderr] 159 | |                     }
[INFO] [stderr] 160 | |                 }
[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] 154 |                 } else if &text_builder == "!!!" {
[INFO] [stderr] 155 |     Some(Token::DocType())
[INFO] [stderr] 156 | } else {
[INFO] [stderr] 157 |     Some(Token::Text(text_builder))
[INFO] [stderr] 158 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/scanner.rs:47:16
[INFO] [stderr]    |
[INFO] [stderr] 47 |           } else {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 48 | |             if let Some(ch) = self.chars.next() {
[INFO] [stderr] 49 | |                 current_char = ch;
[INFO] [stderr] 50 | |             } else {
[INFO] [stderr] 51 | |                 return None;
[INFO] [stderr] 52 | |             }
[INFO] [stderr] 53 | |         }
[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] 47 |         } else if let Some(ch) = self.chars.next() {
[INFO] [stderr] 48 |     current_char = ch;
[INFO] [stderr] 49 | } else {
[INFO] [stderr] 50 |     return None;
[INFO] [stderr] 51 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/scanner.rs:143:28
[INFO] [stderr]     |
[INFO] [stderr] 143 |                       } else {
[INFO] [stderr]     |  ____________________________^
[INFO] [stderr] 144 | |                         if Token::is_delim(&next_char) && next_char != '.' {
[INFO] [stderr] 145 | |                             self.current_char = Some(next_char);
[INFO] [stderr] 146 | |                             break;
[INFO] [stderr] ...   |
[INFO] [stderr] 149 | |                         }
[INFO] [stderr] 150 | |                     }
[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] 143 |                     } else if Token::is_delim(&next_char) && next_char != '.' {
[INFO] [stderr] 144 |     self.current_char = Some(next_char);
[INFO] [stderr] 145 |     break;
[INFO] [stderr] 146 | } else {
[INFO] [stderr] 147 |     text_builder.push(next_char);
[INFO] [stderr] 148 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/scanner.rs:154:24
[INFO] [stderr]     |
[INFO] [stderr] 154 |                   } else {
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 155 | |                     if &text_builder == "!!!" {
[INFO] [stderr] 156 | |                         Some(Token::DocType())
[INFO] [stderr] 157 | |                     } else {
[INFO] [stderr] 158 | |                         Some(Token::Text(text_builder))
[INFO] [stderr] 159 | |                     }
[INFO] [stderr] 160 | |                 }
[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] 154 |                 } else if &text_builder == "!!!" {
[INFO] [stderr] 155 |     Some(Token::DocType())
[INFO] [stderr] 156 | } else {
[INFO] [stderr] 157 |     Some(Token::Text(text_builder))
[INFO] [stderr] 158 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `token` is never read
[INFO] [stderr]   --> src/parser.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut token: Option<&Token> = None;
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `class` is never read
[INFO] [stderr]   --> src/parser.rs:86:33
[INFO] [stderr]    |
[INFO] [stderr] 86 |                         let mut class = String::new();
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `id` is never read
[INFO] [stderr]    --> src/parser.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut id = String::new();
[INFO] [stderr]     |                                 ^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/scanner.rs:68:25
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 let mut value: Option<Token> = None;
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `token` is never read
[INFO] [stderr]   --> src/parser.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut token: Option<&Token> = None;
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `class` is never read
[INFO] [stderr]   --> src/parser.rs:86:33
[INFO] [stderr]    |
[INFO] [stderr] 86 |                         let mut class = String::new();
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `id` is never read
[INFO] [stderr]    --> src/parser.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut id = String::new();
[INFO] [stderr]     |                                 ^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/scanner.rs:68:25
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 let mut value: Option<Token> = None;
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/ast.rs:34:26
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let values = self.attributes.get(key).unwrap().join(" ");
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.attributes[key]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: useless use of `format!`
[INFO] [stderr]    --> src/ast.rs:196:44
[INFO] [stderr]     |
[INFO] [stderr] 196 |                     html_builder.push_str(&format!("{}", self.node_to_html(*child_id)));
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.node_to_html(*child_id).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]     = 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/ast.rs:215:40
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 html_builder.push_str(&format!("{}", self.node_to_html(sibling_id)));
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.node_to_html(sibling_id).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: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:225:12
[INFO] [stderr]     |
[INFO] [stderr] 225 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/ast.rs:34:26
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let values = self.attributes.get(key).unwrap().join(" ");
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.attributes[key]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:235:12
[INFO] [stderr]     |
[INFO] [stderr] 235 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/parser.rs:14:24
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(tokens: &'a Vec<Token>) -> Parser<'a> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^ help: change this to: `&[Token]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/parser.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 | /         loop {
[INFO] [stderr] 178 | |             match self.tokens.next() {
[INFO] [stderr] 179 | |                 Some(tok) => match tok {
[INFO] [stderr] 180 | |                     Token::ClosedCurlyBrace() => break,
[INFO] [stderr] ...   |
[INFO] [stderr] 222 | |             }
[INFO] [stderr] 223 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(tok) = self.tokens.next() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/ast.rs:196:44
[INFO] [stderr]     |
[INFO] [stderr] 196 |                     html_builder.push_str(&format!("{}", self.node_to_html(*child_id)));
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.node_to_html(*child_id).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]     = 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/ast.rs:215:40
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 html_builder.push_str(&format!("{}", self.node_to_html(sibling_id)));
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.node_to_html(sibling_id).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: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:225:12
[INFO] [stderr]     |
[INFO] [stderr] 225 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: length comparison to zero
[INFO] [stderr]    --> src/ast.rs:235:12
[INFO] [stderr]     |
[INFO] [stderr] 235 |         if self.nodes.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.nodes.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/parser.rs:14:24
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(tokens: &'a Vec<Token>) -> Parser<'a> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^ help: change this to: `&[Token]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/parser.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 | /         loop {
[INFO] [stderr] 178 | |             match self.tokens.next() {
[INFO] [stderr] 179 | |                 Some(tok) => match tok {
[INFO] [stderr] 180 | |                     Token::ClosedCurlyBrace() => break,
[INFO] [stderr] ...   |
[INFO] [stderr] 222 | |             }
[INFO] [stderr] 223 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(tok) = self.tokens.next() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/scanner.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         loop {
[INFO] [stderr] 29 | |             if let Some(token) = self.next() {
[INFO] [stderr] 30 | |                 self.tokens.push(token);
[INFO] [stderr] 31 | |             } else {
[INFO] [stderr] 32 | |                 break;
[INFO] [stderr] 33 | |             }
[INFO] [stderr] 34 | |         }
[INFO] [stderr]    | |_________^ help: try: `while let Some(token) = self.next() { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/scanner.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 | /                 let mut return_value = Some(Token::Whitespace());
[INFO] [stderr] 102 | |                 if Some(Token::EndLine()) == self.previous_token {
[INFO] [stderr] 103 | |                     let mut count = 1;
[INFO] [stderr] 104 | |                     loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 116 | |                     return_value = Some(Token::Indentation(count / 2));
[INFO] [stderr] 117 | |                 }
[INFO] [stderr]     | |_________________^ help: it is more idiomatic to write: `let <mut> return_value = if Some(Token::EndLine()) == self.previous_token { ..; Some(Token::Indentation(count / 2)) } else { Some(Token::Whitespace()) };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/values.rs:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn is_delim(ch: &char) -> bool {
[INFO] [stderr]    |                         ^^^^^ help: consider passing by value instead: `char`
[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: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/scanner.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         loop {
[INFO] [stderr] 29 | |             if let Some(token) = self.next() {
[INFO] [stderr] 30 | |                 self.tokens.push(token);
[INFO] [stderr] 31 | |             } else {
[INFO] [stderr] 32 | |                 break;
[INFO] [stderr] 33 | |             }
[INFO] [stderr] 34 | |         }
[INFO] [stderr]    | |_________^ help: try: `while let Some(token) = self.next() { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/scanner.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 | /                 let mut return_value = Some(Token::Whitespace());
[INFO] [stderr] 102 | |                 if Some(Token::EndLine()) == self.previous_token {
[INFO] [stderr] 103 | |                     let mut count = 1;
[INFO] [stderr] 104 | |                     loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 116 | |                     return_value = Some(Token::Indentation(count / 2));
[INFO] [stderr] 117 | |                 }
[INFO] [stderr]     | |_________________^ help: it is more idiomatic to write: `let <mut> return_value = if Some(Token::EndLine()) == self.previous_token { ..; Some(Token::Indentation(count / 2)) } else { Some(Token::Whitespace()) };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/values.rs:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn is_delim(ch: &char) -> bool {
[INFO] [stderr]    |                         ^^^^^ help: consider passing by value instead: `char`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 6.74s
[INFO] running `"docker" "inspect" "3627beea7496605ed9c3dc129d67741d05c4cebb2755eb832ca8d429cee70c7f"`
[INFO] running `"docker" "rm" "-f" "3627beea7496605ed9c3dc129d67741d05c4cebb2755eb832ca8d429cee70c7f"`
[INFO] [stdout] 3627beea7496605ed9c3dc129d67741d05c4cebb2755eb832ca8d429cee70c7f