[INFO] updating cached repository homsterius/rust-craftinginterpreters
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/homsterius/rust-craftinginterpreters
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/homsterius/rust-craftinginterpreters" "work/ex/clippy-test-run/sources/stable/gh/homsterius/rust-craftinginterpreters"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/homsterius/rust-craftinginterpreters'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/homsterius/rust-craftinginterpreters" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/homsterius/rust-craftinginterpreters"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/homsterius/rust-craftinginterpreters'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db4dd8d31f5bbaa8e900c9ed6317bd3c59abaf84
[INFO] sha for GitHub repo homsterius/rust-craftinginterpreters: db4dd8d31f5bbaa8e900c9ed6317bd3c59abaf84
[INFO] validating manifest of homsterius/rust-craftinginterpreters 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 homsterius/rust-craftinginterpreters 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 homsterius/rust-craftinginterpreters
[INFO] finished frobbing homsterius/rust-craftinginterpreters
[INFO] frobbed toml for homsterius/rust-craftinginterpreters written to work/ex/clippy-test-run/sources/stable/gh/homsterius/rust-craftinginterpreters/Cargo.toml
[INFO] started frobbing homsterius/rust-craftinginterpreters
[INFO] finished frobbing homsterius/rust-craftinginterpreters
[INFO] frobbed toml for homsterius/rust-craftinginterpreters written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/homsterius/rust-craftinginterpreters/Cargo.toml
[INFO] crate homsterius/rust-craftinginterpreters 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 homsterius/rust-craftinginterpreters against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/homsterius/rust-craftinginterpreters:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5401034b562c1b7306729a367d6cfd9ae3a97398c5c1a4c037ecd44cb11e6430
[INFO] running `"docker" "start" "-a" "5401034b562c1b7306729a367d6cfd9ae3a97398c5c1a4c037ecd44cb11e6430"`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/lox/ast_printer.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         return expr.accept(self);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `expr.accept(self)`
[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/lox/ast_printer.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         return expr.accept(self);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `expr.accept(self)`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lox/scanner.rs:139:35
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let lexeme = &self.source[self.current..self.current + 1];
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.current..=self.current`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/lox/scanner.rs:153:23
[INFO] [stderr]     |
[INFO] [stderr] 153 |         (&self.source[self.current..self.current + 1]).parse().unwrap()
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.current..=self.current`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     pub fn new(left: ExprRef<'a>, operator: Rc<Token<'a>>, right: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 27 | |         Rc::new(Binary {
[INFO] [stderr] 28 | |             left,
[INFO] [stderr] 29 | |             operator,
[INFO] [stderr] 30 | |             right,
[INFO] [stderr] 31 | |         })
[INFO] [stderr] 32 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_ret_no_self)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | /     pub fn new(expression: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 48 | |         Rc::new(Grouping { expression })
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 | /     pub fn new(value: TokenLiteral<'a>) -> ExprRef<'a> {
[INFO] [stderr] 65 | |         Rc::new(Literal { value })
[INFO] [stderr] 66 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     pub fn new(operator: Rc<Token<'a>>, right: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 83 | |         Rc::new(Unary {
[INFO] [stderr] 84 | |             operator,
[INFO] [stderr] 85 | |             right,
[INFO] [stderr] 86 | |         })
[INFO] [stderr] 87 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[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/lox/parser.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: &'a Vec<Rc<Token<'a>>>) -> Parser<'a> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Rc<Token<'a>>]`
[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: you should consider deriving a `Default` implementation for `lox::Lox`
[INFO] [stderr]   --> src/lox/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     pub fn new() -> Lox {
[INFO] [stderr] 24 | |         Lox {
[INFO] [stderr] 25 | |             had_error: false,
[INFO] [stderr] 26 | |         }
[INFO] [stderr] 27 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 18 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lox/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             io::stdout().write("> ".as_bytes()).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: calling `as_bytes()` on a string literal
[INFO] [stderr]   --> src/lox/mod.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |             io::stdout().write("> ".as_bytes()).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^ help: consider using a byte string literal instead: `b"> "`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::string_lit_as_bytes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lox/mod.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 | /         match expression {
[INFO] [stderr] 64 | |             Some(expr) => {
[INFO] [stderr] 65 | |                 let ast_printer = AstPrinter {};
[INFO] [stderr] 66 | |                 println!("{}", ast_printer.print(expr.as_ref()));
[INFO] [stderr] 67 | |             },
[INFO] [stderr] 68 | |             _ => {},
[INFO] [stderr] 69 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 63 |         if let Some(expr) = expression {
[INFO] [stderr] 64 |     let ast_printer = AstPrinter {};
[INFO] [stderr] 65 |     println!("{}", ast_printer.print(expr.as_ref()));
[INFO] [stderr] 66 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lox/mod.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         io::stderr().write(s.as_bytes()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `lox`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/lox/scanner.rs:139:35
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let lexeme = &self.source[self.current..self.current + 1];
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.current..=self.current`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/lox/scanner.rs:153:23
[INFO] [stderr]     |
[INFO] [stderr] 153 |         (&self.source[self.current..self.current + 1]).parse().unwrap()
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.current..=self.current`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     pub fn new(left: ExprRef<'a>, operator: Rc<Token<'a>>, right: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 27 | |         Rc::new(Binary {
[INFO] [stderr] 28 | |             left,
[INFO] [stderr] 29 | |             operator,
[INFO] [stderr] 30 | |             right,
[INFO] [stderr] 31 | |         })
[INFO] [stderr] 32 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_ret_no_self)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | /     pub fn new(expression: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 48 | |         Rc::new(Grouping { expression })
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 | /     pub fn new(value: TokenLiteral<'a>) -> ExprRef<'a> {
[INFO] [stderr] 65 | |         Rc::new(Literal { value })
[INFO] [stderr] 66 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/lox/expr.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     pub fn new(operator: Rc<Token<'a>>, right: ExprRef<'a>) -> ExprRef<'a> {
[INFO] [stderr] 83 | |         Rc::new(Unary {
[INFO] [stderr] 84 | |             operator,
[INFO] [stderr] 85 | |             right,
[INFO] [stderr] 86 | |         })
[INFO] [stderr] 87 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[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/lox/parser.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: &'a Vec<Rc<Token<'a>>>) -> Parser<'a> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Rc<Token<'a>>]`
[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: you should consider deriving a `Default` implementation for `lox::Lox`
[INFO] [stderr]   --> src/lox/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     pub fn new() -> Lox {
[INFO] [stderr] 24 | |         Lox {
[INFO] [stderr] 25 | |             had_error: false,
[INFO] [stderr] 26 | |         }
[INFO] [stderr] 27 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 18 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lox/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             io::stdout().write("> ".as_bytes()).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: calling `as_bytes()` on a string literal
[INFO] [stderr]   --> src/lox/mod.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |             io::stdout().write("> ".as_bytes()).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^ help: consider using a byte string literal instead: `b"> "`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::string_lit_as_bytes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lox/mod.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 | /         match expression {
[INFO] [stderr] 64 | |             Some(expr) => {
[INFO] [stderr] 65 | |                 let ast_printer = AstPrinter {};
[INFO] [stderr] 66 | |                 println!("{}", ast_printer.print(expr.as_ref()));
[INFO] [stderr] 67 | |             },
[INFO] [stderr] 68 | |             _ => {},
[INFO] [stderr] 69 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 63 |         if let Some(expr) = expression {
[INFO] [stderr] 64 |     let ast_printer = AstPrinter {};
[INFO] [stderr] 65 |     println!("{}", ast_printer.print(expr.as_ref()));
[INFO] [stderr] 66 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lox/mod.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         io::stderr().write(s.as_bytes()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `lox`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5401034b562c1b7306729a367d6cfd9ae3a97398c5c1a4c037ecd44cb11e6430"`
[INFO] running `"docker" "rm" "-f" "5401034b562c1b7306729a367d6cfd9ae3a97398c5c1a4c037ecd44cb11e6430"`
[INFO] [stdout] 5401034b562c1b7306729a367d6cfd9ae3a97398c5c1a4c037ecd44cb11e6430