[INFO] updating cached repository cderwin/kaleidescope-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cderwin/kaleidescope-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cderwin/kaleidescope-rs" "work/ex/clippy-test-run/sources/stable/gh/cderwin/kaleidescope-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/cderwin/kaleidescope-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cderwin/kaleidescope-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cderwin/kaleidescope-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cderwin/kaleidescope-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 39d058450b09f064dc67cc9a080a2b69dfbffe16
[INFO] sha for GitHub repo cderwin/kaleidescope-rs: 39d058450b09f064dc67cc9a080a2b69dfbffe16
[INFO] validating manifest of cderwin/kaleidescope-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 cderwin/kaleidescope-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 cderwin/kaleidescope-rs
[INFO] finished frobbing cderwin/kaleidescope-rs
[INFO] frobbed toml for cderwin/kaleidescope-rs written to work/ex/clippy-test-run/sources/stable/gh/cderwin/kaleidescope-rs/Cargo.toml
[INFO] started frobbing cderwin/kaleidescope-rs
[INFO] finished frobbing cderwin/kaleidescope-rs
[INFO] frobbed toml for cderwin/kaleidescope-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cderwin/kaleidescope-rs/Cargo.toml
[INFO] crate cderwin/kaleidescope-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 cderwin/kaleidescope-rs against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/cderwin/kaleidescope-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" "-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] 94b73494a03f038dc1756667d13bed1803b69636d16ba3567605ed2aa75934b5
[INFO] running `"docker" "start" "-a" "94b73494a03f038dc1756667d13bed1803b69636d16ba3567605ed2aa75934b5"`
[INFO] [stderr]     Checking kaleidescope-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             body: body,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `body`
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             body: body,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `body`
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:13:30
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut p = Parser { lexer: lexer, token: Token::Eof };
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:13:30
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut p = Parser { lexer: lexer, token: Token::Eof };
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[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: unneeded return statement
[INFO] [stderr]    --> src/lexer.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 return Ok(Token::OpenDelim(Delim::Paren));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::OpenDelim(Delim::Paren))`
[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] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lexer.rs:145:17
[INFO] [stderr]     |
[INFO] [stderr] 145 |                 return Ok(Token::CloseDelim(Delim::Paren));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::CloseDelim(Delim::Paren))`
[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/lexer.rs:156:17
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 return Ok(Token::Eq);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Eq)`
[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/lexer.rs:166:17
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 return Ok(Token::Lt)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Lt)`
[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/lexer.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |                 return Ok(Token::Gt)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Gt)`
[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/lexer.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 return Ok(Token::Bang)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Bang)`
[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/lexer.rs:196:17
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 return Err("`&` must be followed by `&` to form valid token".to_string())
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("`&` must be followed by `&` to form valid token".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/lexer.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 return Err("`|` must be followed by `|` to form valid token".to_string())
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("`|` must be followed by `|` to form valid token".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/lexer.rs:211:17
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 return Ok(self.binop(Operator::Plus));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Plus))`
[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/lexer.rs:216:17
[INFO] [stderr]     |
[INFO] [stderr] 216 |                 return Ok(self.binop(Operator::Minus));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Minus))`
[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/lexer.rs:221:17
[INFO] [stderr]     |
[INFO] [stderr] 221 |                 return Ok(self.binop(Operator::Star));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Star))`
[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/lexer.rs:226:17
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 return Ok(self.binop(Operator::Slash));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Slash))`
[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/lexer.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 return Ok(self.binop(Operator::Percent));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Percent))`
[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/lexer.rs:238:17
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 return Ok(Token::Comma)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Comma)`
[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/lexer.rs:243:17
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 return Ok(Token::Semicolon)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Semicolon)`
[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/lexer.rs:249:17
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 return Err(msg);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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/lexer.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 return Ok(Token::OpenDelim(Delim::Paren));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::OpenDelim(Delim::Paren))`
[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] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lexer.rs:145:17
[INFO] [stderr]     |
[INFO] [stderr] 145 |                 return Ok(Token::CloseDelim(Delim::Paren));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::CloseDelim(Delim::Paren))`
[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/lexer.rs:156:17
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 return Ok(Token::Eq);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Eq)`
[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/lexer.rs:166:17
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 return Ok(Token::Lt)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Lt)`
[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/lexer.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |                 return Ok(Token::Gt)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Gt)`
[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/lexer.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 return Ok(Token::Bang)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Bang)`
[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/lexer.rs:196:17
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 return Err("`&` must be followed by `&` to form valid token".to_string())
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("`&` must be followed by `&` to form valid token".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/lexer.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 return Err("`|` must be followed by `|` to form valid token".to_string())
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("`|` must be followed by `|` to form valid token".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/lexer.rs:211:17
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 return Ok(self.binop(Operator::Plus));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Plus))`
[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/lexer.rs:216:17
[INFO] [stderr]     |
[INFO] [stderr] 216 |                 return Ok(self.binop(Operator::Minus));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Minus))`
[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/lexer.rs:221:17
[INFO] [stderr]     |
[INFO] [stderr] 221 |                 return Ok(self.binop(Operator::Star));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Star))`
[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/lexer.rs:226:17
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 return Ok(self.binop(Operator::Slash));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Slash))`
[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/lexer.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 return Ok(self.binop(Operator::Percent));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(self.binop(Operator::Percent))`
[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/lexer.rs:238:17
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 return Ok(Token::Comma)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Comma)`
[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/lexer.rs:243:17
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 return Ok(Token::Semicolon)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Token::Semicolon)`
[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/lexer.rs:249:17
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 return Err(msg);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "94b73494a03f038dc1756667d13bed1803b69636d16ba3567605ed2aa75934b5"`
[INFO] running `"docker" "rm" "-f" "94b73494a03f038dc1756667d13bed1803b69636d16ba3567605ed2aa75934b5"`
[INFO] [stdout] 94b73494a03f038dc1756667d13bed1803b69636d16ba3567605ed2aa75934b5