[INFO] cloning repository https://github.com/carter-thaxton/lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carter-thaxton/lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarter-thaxton%2Flox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarter-thaxton%2Flox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72c8c8907168f05528cd728451641cd28e56ca43
[INFO] linting carter-thaxton/lox against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarter-thaxton%2Flox" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/carter-thaxton/lox
[INFO] finished tweaking git repo https://github.com/carter-thaxton/lox
[INFO] tweaked toml for git repo https://github.com/carter-thaxton/lox written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/carter-thaxton/lox on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/carter-thaxton/lox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9f2d8a23aceda25bb8f4602378947b205c86a548002a85819029e4c698152ba
[INFO] running `Command { std: "docker" "start" "-a" "b9f2d8a23aceda25bb8f4602378947b205c86a548002a85819029e4c698152ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9f2d8a23aceda25bb8f4602378947b205c86a548002a85819029e4c698152ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f2d8a23aceda25bb8f4602378947b205c86a548002a85819029e4c698152ba", kill_on_drop: false }`
[INFO] [stdout] b9f2d8a23aceda25bb8f4602378947b205c86a548002a85819029e4c698152ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3a0beac6ac04a7d403b01ef5afecb7a3a70d3c12a75b3e76ecd1253c9945aba
[INFO] running `Command { std: "docker" "start" "-a" "e3a0beac6ac04a7d403b01ef5afecb7a3a70d3c12a75b3e76ecd1253c9945aba", kill_on_drop: false }`
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/errors.rs:249:42
[INFO] [stdout]     |
[INFO] [stdout] 249 |             ErrorKind::ParserError(_) => &self.span.as_ref().expect("ParserError should have a span"),
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `self.span.as_ref().expect("ParserError should have a span")`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]    --> src/interpreter.rs:179:60
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 let args: Result<Vec<Value>, Error> = args.into_iter().map(|arg| self.evaluate(arg)).collect();
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/interpreter.rs:294:47
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     let result = self.execute(&stmt);
[INFO] [stdout]     |                                               ^^^^^ help: change this to: `stmt`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/interpreter.rs:415:47
[INFO] [stdout]     |
[INFO] [stdout] 415 |                     let result = self.execute(&body);
[INFO] [stdout]     |                                               ^^^^^ help: change this to: `body`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:538:17
[INFO] [stdout]     |
[INFO] [stdout] 538 |                 return Ok(());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 538 -                 return Ok(());
[INFO] [stdout] 538 +                 Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:540:17
[INFO] [stdout]     |
[INFO] [stdout] 540 |                 return Err(Error::test_output_mismatch(expected, actual));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 540 -                 return Err(Error::test_output_mismatch(expected, actual));
[INFO] [stdout] 540 +                 Err(Error::test_output_mismatch(expected, actual))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:543:13
[INFO] [stdout]     |
[INFO] [stdout] 543 |             return Err(Error::test_output_missing(expected));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 543 -             return Err(Error::test_output_missing(expected));
[INFO] [stdout] 543 +             Err(Error::test_output_missing(expected))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/lexer.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | /         match self {
[INFO] [stdout] 145 | |             TokenKind::ExpectOutput(_)          => true,
[INFO] [stdout] 146 | |             TokenKind::ExpectParserError(_)     => true,
[INFO] [stdout] 147 | |             TokenKind::ExpectRuntimeError(_)    => true,
[INFO] [stdout] 148 | |             _ => false,
[INFO] [stdout] 149 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 144 -         match self {
[INFO] [stdout] 145 -             TokenKind::ExpectOutput(_)          => true,
[INFO] [stdout] 146 -             TokenKind::ExpectParserError(_)     => true,
[INFO] [stdout] 147 -             TokenKind::ExpectRuntimeError(_)    => true,
[INFO] [stdout] 148 -             _ => false,
[INFO] [stdout] 149 -         }
[INFO] [stdout] 144 +         matches!(self, TokenKind::ExpectOutput(_) | TokenKind::ExpectParserError(_) | TokenKind::ExpectRuntimeError(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:354:29
[INFO] [stdout]     |
[INFO] [stdout] 354 |                         if !c.is_digit(10) {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]     = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:360:85
[INFO] [stdout]     |
[INFO] [stdout] 360 |                     if self.peek() == Some('.') && self.peek_next().is_some_and(|c| c.is_digit(10)) {
[INFO] [stdout]     |                                                                                     ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 364 | ...                   if !c.is_digit(10) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 | /             return Ok(Stmt::Var {
[INFO] [stdout] 141 | |                 name: name.to_string(),
[INFO] [stdout] 142 | |                 init: Some(expr),
[INFO] [stdout] 143 | |                 line: tok.span.line,
[INFO] [stdout] 144 | |             });
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 140 ~             Ok(Stmt::Var {
[INFO] [stdout] 141 +                 name: name.to_string(),
[INFO] [stdout] 142 +                 init: Some(expr),
[INFO] [stdout] 143 +                 line: tok.span.line,
[INFO] [stdout] 144 ~             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 | /             return Ok(Stmt::Var {
[INFO] [stdout] 148 | |                 name: name.to_string(),
[INFO] [stdout] 149 | |                 init: None,
[INFO] [stdout] 150 | |                 line: tok.span.line,
[INFO] [stdout] 151 | |             });
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 147 ~             Ok(Stmt::Var {
[INFO] [stdout] 148 +                 name: name.to_string(),
[INFO] [stdout] 149 +                 init: None,
[INFO] [stdout] 150 +                 line: tok.span.line,
[INFO] [stdout] 151 ~             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:168:20
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 | /         return Ok(Stmt::Function {
[INFO] [stdout] 185 | |             name: name.to_string(),
[INFO] [stdout] 186 | |             params,
[INFO] [stdout] 187 | |             body,
[INFO] [stdout] 188 | |             line,
[INFO] [stdout] 189 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 184 ~         Ok(Stmt::Function {
[INFO] [stdout] 185 +             name: name.to_string(),
[INFO] [stdout] 186 +             params,
[INFO] [stdout] 187 +             body,
[INFO] [stdout] 188 +             line,
[INFO] [stdout] 189 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:349:16
[INFO] [stdout]     |
[INFO] [stdout] 349 |             if !in_loop.is_some() {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^ help: try: `in_loop.is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]    --> src/parser.rs:224:47
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let else_branch = else_branch.map(|e| Box::new(e));
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `Box::new`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]     = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:398:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |         return Err(self.parser_error("Expect '}' after block."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 398 -         return Err(self.parser_error("Expect '}' after block."));
[INFO] [stdout] 398 +         Err(self.parser_error("Expect '}' after block."))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:594:28
[INFO] [stdout]     |
[INFO] [stdout] 594 |                         if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:715:20
[INFO] [stdout]     |
[INFO] [stdout] 715 |                 if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:726:9
[INFO] [stdout]     |
[INFO] [stdout] 726 |         return Ok(Expr::Function { params, body, line });
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 726 -         return Ok(Expr::Function { params, body, line });
[INFO] [stdout] 726 +         Ok(Expr::Function { params, body, line })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/parser.rs:704:57
[INFO] [stdout]     |
[INFO] [stdout] 704 |         let lparen = self.consume(TokenKind::LeftParen, format!("Expect '(' after fun."))?;
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Expect '(' after fun.".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]     = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/parser.rs:722:44
[INFO] [stdout]     |
[INFO] [stdout] 722 |         self.consume(TokenKind::LeftBrace, format!("Expect '{{' before function body."))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Expect '{' before function body.".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/errors.rs:249:42
[INFO] [stdout]     |
[INFO] [stdout] 249 |             ErrorKind::ParserError(_) => &self.span.as_ref().expect("ParserError should have a span"),
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `self.span.as_ref().expect("ParserError should have a span")`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:167:60
[INFO] [stdout]     |
[INFO] [stdout] 167 |                       Stmt::Function { params, body, .. } => match resolve_function(FunctionKind::Method, params, body, scopes) {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 168 | |                         Err(err) => {
[INFO] [stdout] 169 | |                             if has_superclass {
[INFO] [stdout] 170 | |                                 scopes.pop();
[INFO] [stdout] ...   |
[INFO] [stdout] 175 | |                         _ => {}
[INFO] [stdout] 176 | |                     },
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 167 ~                     Stmt::Function { params, body, .. } => if let Err(err) = resolve_function(FunctionKind::Method, params, body, scopes) {
[INFO] [stdout] 168 +                         if has_superclass {
[INFO] [stdout] 169 +                             scopes.pop();
[INFO] [stdout] 170 +                         }
[INFO] [stdout] 171 +                         scopes.pop();
[INFO] [stdout] 172 +                         return Err(err);
[INFO] [stdout] 173 ~                     },
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 | /                 match resolve_stmt(stmt, scopes) {
[INFO] [stdout] 200 | |                     Err(err) => {
[INFO] [stdout] 201 | |                         scopes.pop();
[INFO] [stdout] 202 | |                         return Err(err);
[INFO] [stdout] 203 | |                     }
[INFO] [stdout] 204 | |                     _ => {}
[INFO] [stdout] 205 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 199 ~                 if let Err(err) = resolve_stmt(stmt, scopes) {
[INFO] [stdout] 200 +                     scopes.pop();
[INFO] [stdout] 201 +                     return Err(err);
[INFO] [stdout] 202 +                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 | /         match scopes.declare_and_check(param, *line) {
[INFO] [stdout] 336 | |             Err(err) => {
[INFO] [stdout] 337 | |                 scopes.pop();
[INFO] [stdout] 338 | |                 return Err(err);
[INFO] [stdout] 339 | |             }
[INFO] [stdout] 340 | |             _ => {}
[INFO] [stdout] 341 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 335 ~         if let Err(err) = scopes.declare_and_check(param, *line) {
[INFO] [stdout] 336 +             scopes.pop();
[INFO] [stdout] 337 +             return Err(err);
[INFO] [stdout] 338 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 | /         match resolve_stmt(stmt, scopes) {
[INFO] [stdout] 347 | |             Err(err) => {
[INFO] [stdout] 348 | |                 scopes.pop();
[INFO] [stdout] 349 | |                 return Err(err);
[INFO] [stdout] 350 | |             }
[INFO] [stdout] 351 | |             _ => {}
[INFO] [stdout] 352 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 346 ~         if let Err(err) = resolve_stmt(stmt, scopes) {
[INFO] [stdout] 347 +             scopes.pop();
[INFO] [stdout] 348 +             return Err(err);
[INFO] [stdout] 349 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]    --> src/interpreter.rs:179:60
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 let args: Result<Vec<Value>, Error> = args.into_iter().map(|arg| self.evaluate(arg)).collect();
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/runtime.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fcn: Box<dyn Fn(&[Value]) -> Result<Value, Error>>,
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/runtime.rs:129:69
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let fcn = Function::new(Some(name.to_string()), &params, &body, *line, is_init, env);
[INFO] [stdout]     |                                                                     ^^^^^^^ help: change this to: `params`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/runtime.rs:129:78
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let fcn = Function::new(Some(name.to_string()), &params, &body, *line, is_init, env);
[INFO] [stdout]     |                                                                              ^^^^^ help: change this to: `body`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/interpreter.rs:294:47
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     let result = self.execute(&stmt);
[INFO] [stdout]     |                                               ^^^^^ help: change this to: `stmt`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/interpreter.rs:415:47
[INFO] [stdout]     |
[INFO] [stdout] 415 |                     let result = self.execute(&body);
[INFO] [stdout]     |                                               ^^^^^ help: change this to: `body`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/runtime.rs:311:9
[INFO] [stdout]     |
[INFO] [stdout] 311 | /         match self {
[INFO] [stdout] 312 | |             Value::Nil | Value::False => false,
[INFO] [stdout] 313 | |             _ => true,
[INFO] [stdout] 314 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 311 -         match self {
[INFO] [stdout] 312 -             Value::Nil | Value::False => false,
[INFO] [stdout] 313 -             _ => true,
[INFO] [stdout] 314 -         }
[INFO] [stdout] 311 +         !matches!(self, Value::Nil | Value::False)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/runtime.rs:318:9
[INFO] [stdout]     |
[INFO] [stdout] 318 | /         match self {
[INFO] [stdout] 319 | |             Value::Number(_) => true,
[INFO] [stdout] 320 | |             _ => false,
[INFO] [stdout] 321 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 318 -         match self {
[INFO] [stdout] 319 -             Value::Number(_) => true,
[INFO] [stdout] 320 -             _ => false,
[INFO] [stdout] 321 -         }
[INFO] [stdout] 318 +         matches!(self, Value::Number(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]    --> src/runtime.rs:324:67
[INFO] [stdout]     |
[INFO] [stdout] 324 |     pub fn builtin_fn(name: impl Into<String>, arity: usize, fcn: Box<dyn Fn(&[Value]) -> Result<Value, Error>>) -> Value {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:538:17
[INFO] [stdout]     |
[INFO] [stdout] 538 |                 return Ok(());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 538 -                 return Ok(());
[INFO] [stdout] 538 +                 Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:540:17
[INFO] [stdout]     |
[INFO] [stdout] 540 |                 return Err(Error::test_output_mismatch(expected, actual));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 540 -                 return Err(Error::test_output_mismatch(expected, actual));
[INFO] [stdout] 540 +                 Err(Error::test_output_mismatch(expected, actual))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/interpreter.rs:543:13
[INFO] [stdout]     |
[INFO] [stdout] 543 |             return Err(Error::test_output_missing(expected));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 543 -             return Err(Error::test_output_missing(expected));
[INFO] [stdout] 543 +             Err(Error::test_output_missing(expected))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/lexer.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | /         match self {
[INFO] [stdout] 145 | |             TokenKind::ExpectOutput(_)          => true,
[INFO] [stdout] 146 | |             TokenKind::ExpectParserError(_)     => true,
[INFO] [stdout] 147 | |             TokenKind::ExpectRuntimeError(_)    => true,
[INFO] [stdout] 148 | |             _ => false,
[INFO] [stdout] 149 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 144 -         match self {
[INFO] [stdout] 145 -             TokenKind::ExpectOutput(_)          => true,
[INFO] [stdout] 146 -             TokenKind::ExpectParserError(_)     => true,
[INFO] [stdout] 147 -             TokenKind::ExpectRuntimeError(_)    => true,
[INFO] [stdout] 148 -             _ => false,
[INFO] [stdout] 149 -         }
[INFO] [stdout] 144 +         matches!(self, TokenKind::ExpectOutput(_) | TokenKind::ExpectParserError(_) | TokenKind::ExpectRuntimeError(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:354:29
[INFO] [stdout]     |
[INFO] [stdout] 354 |                         if !c.is_digit(10) {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]     = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:360:85
[INFO] [stdout]     |
[INFO] [stdout] 360 |                     if self.peek() == Some('.') && self.peek_next().is_some_and(|c| c.is_digit(10)) {
[INFO] [stdout]     |                                                                                     ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 364 | ...                   if !c.is_digit(10) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 | /             return Ok(Stmt::Var {
[INFO] [stdout] 141 | |                 name: name.to_string(),
[INFO] [stdout] 142 | |                 init: Some(expr),
[INFO] [stdout] 143 | |                 line: tok.span.line,
[INFO] [stdout] 144 | |             });
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 140 ~             Ok(Stmt::Var {
[INFO] [stdout] 141 +                 name: name.to_string(),
[INFO] [stdout] 142 +                 init: Some(expr),
[INFO] [stdout] 143 +                 line: tok.span.line,
[INFO] [stdout] 144 ~             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 | /             return Ok(Stmt::Var {
[INFO] [stdout] 148 | |                 name: name.to_string(),
[INFO] [stdout] 149 | |                 init: None,
[INFO] [stdout] 150 | |                 line: tok.span.line,
[INFO] [stdout] 151 | |             });
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 147 ~             Ok(Stmt::Var {
[INFO] [stdout] 148 +                 name: name.to_string(),
[INFO] [stdout] 149 +                 init: None,
[INFO] [stdout] 150 +                 line: tok.span.line,
[INFO] [stdout] 151 ~             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:168:20
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 | /         return Ok(Stmt::Function {
[INFO] [stdout] 185 | |             name: name.to_string(),
[INFO] [stdout] 186 | |             params,
[INFO] [stdout] 187 | |             body,
[INFO] [stdout] 188 | |             line,
[INFO] [stdout] 189 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 184 ~         Ok(Stmt::Function {
[INFO] [stdout] 185 +             name: name.to_string(),
[INFO] [stdout] 186 +             params,
[INFO] [stdout] 187 +             body,
[INFO] [stdout] 188 +             line,
[INFO] [stdout] 189 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:349:16
[INFO] [stdout]     |
[INFO] [stdout] 349 |             if !in_loop.is_some() {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^ help: try: `in_loop.is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]    --> src/parser.rs:224:47
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let else_branch = else_branch.map(|e| Box::new(e));
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `Box::new`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]     = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:398:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |         return Err(self.parser_error("Expect '}' after block."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 398 -         return Err(self.parser_error("Expect '}' after block."));
[INFO] [stdout] 398 +         Err(self.parser_error("Expect '}' after block."))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:594:28
[INFO] [stdout]     |
[INFO] [stdout] 594 |                         if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/parser.rs:715:20
[INFO] [stdout]     |
[INFO] [stdout] 715 |                 if !self.matches(TokenKind::Comma).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.matches(TokenKind::Comma).is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:726:9
[INFO] [stdout]     |
[INFO] [stdout] 726 |         return Ok(Expr::Function { params, body, line });
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 726 -         return Ok(Expr::Function { params, body, line });
[INFO] [stdout] 726 +         Ok(Expr::Function { params, body, line })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/parser.rs:704:57
[INFO] [stdout]     |
[INFO] [stdout] 704 |         let lparen = self.consume(TokenKind::LeftParen, format!("Expect '(' after fun."))?;
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Expect '(' after fun.".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]     = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/parser.rs:722:44
[INFO] [stdout]     |
[INFO] [stdout] 722 |         self.consume(TokenKind::LeftBrace, format!("Expect '{{' before function body."))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Expect '{' before function body.".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:167:60
[INFO] [stdout]     |
[INFO] [stdout] 167 |                       Stmt::Function { params, body, .. } => match resolve_function(FunctionKind::Method, params, body, scopes) {
[INFO] [stdout]     |  ____________________________________________________________^
[INFO] [stdout] 168 | |                         Err(err) => {
[INFO] [stdout] 169 | |                             if has_superclass {
[INFO] [stdout] 170 | |                                 scopes.pop();
[INFO] [stdout] ...   |
[INFO] [stdout] 175 | |                         _ => {}
[INFO] [stdout] 176 | |                     },
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 167 ~                     Stmt::Function { params, body, .. } => if let Err(err) = resolve_function(FunctionKind::Method, params, body, scopes) {
[INFO] [stdout] 168 +                         if has_superclass {
[INFO] [stdout] 169 +                             scopes.pop();
[INFO] [stdout] 170 +                         }
[INFO] [stdout] 171 +                         scopes.pop();
[INFO] [stdout] 172 +                         return Err(err);
[INFO] [stdout] 173 ~                     },
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 | /                 match resolve_stmt(stmt, scopes) {
[INFO] [stdout] 200 | |                     Err(err) => {
[INFO] [stdout] 201 | |                         scopes.pop();
[INFO] [stdout] 202 | |                         return Err(err);
[INFO] [stdout] 203 | |                     }
[INFO] [stdout] 204 | |                     _ => {}
[INFO] [stdout] 205 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 199 ~                 if let Err(err) = resolve_stmt(stmt, scopes) {
[INFO] [stdout] 200 +                     scopes.pop();
[INFO] [stdout] 201 +                     return Err(err);
[INFO] [stdout] 202 +                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 | /         match scopes.declare_and_check(param, *line) {
[INFO] [stdout] 336 | |             Err(err) => {
[INFO] [stdout] 337 | |                 scopes.pop();
[INFO] [stdout] 338 | |                 return Err(err);
[INFO] [stdout] 339 | |             }
[INFO] [stdout] 340 | |             _ => {}
[INFO] [stdout] 341 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 335 ~         if let Err(err) = scopes.declare_and_check(param, *line) {
[INFO] [stdout] 336 +             scopes.pop();
[INFO] [stdout] 337 +             return Err(err);
[INFO] [stdout] 338 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/resolver.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 | /         match resolve_stmt(stmt, scopes) {
[INFO] [stdout] 347 | |             Err(err) => {
[INFO] [stdout] 348 | |                 scopes.pop();
[INFO] [stdout] 349 | |                 return Err(err);
[INFO] [stdout] 350 | |             }
[INFO] [stdout] 351 | |             _ => {}
[INFO] [stdout] 352 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 346 ~         if let Err(err) = resolve_stmt(stmt, scopes) {
[INFO] [stdout] 347 +             scopes.pop();
[INFO] [stdout] 348 +             return Err(err);
[INFO] [stdout] 349 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/runtime.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fcn: Box<dyn Fn(&[Value]) -> Result<Value, Error>>,
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/runtime.rs:129:69
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let fcn = Function::new(Some(name.to_string()), &params, &body, *line, is_init, env);
[INFO] [stdout]     |                                                                     ^^^^^^^ help: change this to: `params`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/runtime.rs:129:78
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let fcn = Function::new(Some(name.to_string()), &params, &body, *line, is_init, env);
[INFO] [stdout]     |                                                                              ^^^^^ help: change this to: `body`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/runtime.rs:311:9
[INFO] [stdout]     |
[INFO] [stdout] 311 | /         match self {
[INFO] [stdout] 312 | |             Value::Nil | Value::False => false,
[INFO] [stdout] 313 | |             _ => true,
[INFO] [stdout] 314 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 311 -         match self {
[INFO] [stdout] 312 -             Value::Nil | Value::False => false,
[INFO] [stdout] 313 -             _ => true,
[INFO] [stdout] 314 -         }
[INFO] [stdout] 311 +         !matches!(self, Value::Nil | Value::False)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/runtime.rs:318:9
[INFO] [stdout]     |
[INFO] [stdout] 318 | /         match self {
[INFO] [stdout] 319 | |             Value::Number(_) => true,
[INFO] [stdout] 320 | |             _ => false,
[INFO] [stdout] 321 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 318 -         match self {
[INFO] [stdout] 319 -             Value::Number(_) => true,
[INFO] [stdout] 320 -             _ => false,
[INFO] [stdout] 321 -         }
[INFO] [stdout] 318 +         matches!(self, Value::Number(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]    --> src/runtime.rs:324:67
[INFO] [stdout]     |
[INFO] [stdout] 324 |     pub fn builtin_fn(name: impl Into<String>, arity: usize, fcn: Box<dyn Fn(&[Value]) -> Result<Value, Error>>) -> Value {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e3a0beac6ac04a7d403b01ef5afecb7a3a70d3c12a75b3e76ecd1253c9945aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a0beac6ac04a7d403b01ef5afecb7a3a70d3c12a75b3e76ecd1253c9945aba", kill_on_drop: false }`
[INFO] [stdout] e3a0beac6ac04a7d403b01ef5afecb7a3a70d3c12a75b3e76ecd1253c9945aba