[INFO] updating cached repository jakelishman/brainfuck-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/jakelishman/brainfuck-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/jakelishman/brainfuck-rust" "work/ex/clippy-test-run/sources/stable/gh/jakelishman/brainfuck-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/jakelishman/brainfuck-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/jakelishman/brainfuck-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jakelishman/brainfuck-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jakelishman/brainfuck-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9c91023e66274e2aa20d414c9a19880ff3e44c0d [INFO] sha for GitHub repo jakelishman/brainfuck-rust: 9c91023e66274e2aa20d414c9a19880ff3e44c0d [INFO] validating manifest of jakelishman/brainfuck-rust 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 jakelishman/brainfuck-rust 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 jakelishman/brainfuck-rust [INFO] finished frobbing jakelishman/brainfuck-rust [INFO] frobbed toml for jakelishman/brainfuck-rust written to work/ex/clippy-test-run/sources/stable/gh/jakelishman/brainfuck-rust/Cargo.toml [INFO] started frobbing jakelishman/brainfuck-rust [INFO] finished frobbing jakelishman/brainfuck-rust [INFO] frobbed toml for jakelishman/brainfuck-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jakelishman/brainfuck-rust/Cargo.toml [INFO] crate jakelishman/brainfuck-rust 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 jakelishman/brainfuck-rust 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/jakelishman/brainfuck-rust:/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] 8cf5c0e651ac350014df4e27c46e5c55cbe6c8e630383dea7a3773d0a42ec1d1 [INFO] running `"docker" "start" "-a" "8cf5c0e651ac350014df4e27c46e5c55cbe6c8e630383dea7a3773d0a42ec1d1"` [INFO] [stderr] Checking brainfuck_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/bf_rust/parse.rs:3:28 [INFO] [stderr] | [INFO] [stderr] 3 | pub fn to_base_ops (input: &String) -> Vec { [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/bf_rust/parse.rs:21:39 [INFO] [stderr] | [INFO] [stderr] 21 | pub fn find_matching_end_loop (input: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: the loop variable `i` is used to index `input` [INFO] [stderr] --> src/bf_rust/parse.rs:24:14 [INFO] [stderr] | [INFO] [stderr] 24 | for i in start_pos + 1 .. input.len() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_range_loop)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop [INFO] [stderr] help: consider using an iterator [INFO] [stderr] | [INFO] [stderr] 24 | for (i, ) in input.iter().enumerate().skip(start_pos + 1) { [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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/bf_rust/parse.rs:35:26 [INFO] [stderr] | [INFO] [stderr] 35 | fn to_ops_helper (input: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [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/bf_rust/parse.rs:85:23 [INFO] [stderr] | [INFO] [stderr] 85 | pub fn to_ops (input: &Vec) -> Result, String> { [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/bf_rust/parse.rs:3:28 [INFO] [stderr] | [INFO] [stderr] 3 | pub fn to_base_ops (input: &String) -> Vec { [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/bf_rust/parse.rs:21:39 [INFO] [stderr] | [INFO] [stderr] 21 | pub fn find_matching_end_loop (input: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: the loop variable `i` is used to index `input` [INFO] [stderr] --> src/bf_rust/parse.rs:24:14 [INFO] [stderr] | [INFO] [stderr] 24 | for i in start_pos + 1 .. input.len() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_range_loop)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop [INFO] [stderr] help: consider using an iterator [INFO] [stderr] | [INFO] [stderr] 24 | for (i, ) in input.iter().enumerate().skip(start_pos + 1) { [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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/bf_rust/parse.rs:35:26 [INFO] [stderr] | [INFO] [stderr] 35 | fn to_ops_helper (input: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [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/bf_rust/parse.rs:85:23 [INFO] [stderr] | [INFO] [stderr] 85 | pub fn to_ops (input: &Vec) -> Result, String> { [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [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/interpreter/main.rs:34:38 [INFO] [stderr] | [INFO] [stderr] 34 | fn interpret_base<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/interpreter/main.rs:102:47 [INFO] [stderr] | [INFO] [stderr] 102 | fn interpret_native_helper<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: change this to: `&[Expression]` [INFO] [stderr] | [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 don't need to add `&` to all patterns [INFO] [stderr] --> src/interpreter/main.rs:111:9 [INFO] [stderr] | [INFO] [stderr] 111 | / match expr { [INFO] [stderr] 112 | | &Loop(ref body, None) => { [INFO] [stderr] 113 | | let mut i = 0; [INFO] [stderr] 114 | | debug_message!(flags.debug, streams.err, [INFO] [stderr] ... | [INFO] [stderr] 171 | | }, [INFO] [stderr] 172 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::match_ref_pats)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats [INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression [INFO] [stderr] | [INFO] [stderr] 111 | match *expr { [INFO] [stderr] 112 | Loop(ref body, None) => { [INFO] [stderr] 113 | let mut i = 0; [INFO] [stderr] 114 | debug_message!(flags.debug, streams.err, [INFO] [stderr] 115 | "Entering loop of unknown length."); [INFO] [stderr] 116 | while data[*dptr] != 0 { [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:139:33 [INFO] [stderr] | [INFO] [stderr] 139 | data[*dptr] = ((data[*dptr] as i16 + i as i16 + 256) % 256) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: try: `i16::from(data[*dptr])` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting i8 to i16 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:139:54 [INFO] [stderr] | [INFO] [stderr] 139 | data[*dptr] = ((data[*dptr] as i16 + i as i16 + 256) % 256) as u8; [INFO] [stderr] | ^^^^^^^^ help: try: `i16::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting i16 to i64 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:145:41 [INFO] [stderr] | [INFO] [stderr] 145 | *dptr = (*dptr as i64 + i as i64) as usize; [INFO] [stderr] | ^^^^^^^^ help: try: `i64::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [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/interpreter/main.rs:177:40 [INFO] [stderr] | [INFO] [stderr] 177 | fn interpret_native<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: change this to: `&[Expression]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/interpreter/main.rs:194:34 [INFO] [stderr] | [INFO] [stderr] 194 | fn read_instructions (file_path: &String) -> [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: single-character string constant used as pattern [INFO] [stderr] --> src/interpreter/main.rs:210:35 [INFO] [stderr] | [INFO] [stderr] 210 | } else if arg.starts_with("-") { [INFO] [stderr] | ^^^ help: try using a char instead: `'-'` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::single_char_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/interpreter/main.rs:254:21 [INFO] [stderr] | [INFO] [stderr] 254 | fn compile (string: &String, flags: &CommandLineFlags) [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/interpreter/main.rs:279:22 [INFO] [stderr] | [INFO] [stderr] 279 | if flags.help || files.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `files.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/interpreter/main.rs:34:38 [INFO] [stderr] | [INFO] [stderr] 34 | fn interpret_base<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^ help: change this to: `&[BaseOp]` [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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/interpreter/main.rs:102:47 [INFO] [stderr] | [INFO] [stderr] 102 | fn interpret_native_helper<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: change this to: `&[Expression]` [INFO] [stderr] | [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 don't need to add `&` to all patterns [INFO] [stderr] --> src/interpreter/main.rs:111:9 [INFO] [stderr] | [INFO] [stderr] 111 | / match expr { [INFO] [stderr] 112 | | &Loop(ref body, None) => { [INFO] [stderr] 113 | | let mut i = 0; [INFO] [stderr] 114 | | debug_message!(flags.debug, streams.err, [INFO] [stderr] ... | [INFO] [stderr] 171 | | }, [INFO] [stderr] 172 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::match_ref_pats)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats [INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression [INFO] [stderr] | [INFO] [stderr] 111 | match *expr { [INFO] [stderr] 112 | Loop(ref body, None) => { [INFO] [stderr] 113 | let mut i = 0; [INFO] [stderr] 114 | debug_message!(flags.debug, streams.err, [INFO] [stderr] 115 | "Entering loop of unknown length."); [INFO] [stderr] 116 | while data[*dptr] != 0 { [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:139:33 [INFO] [stderr] | [INFO] [stderr] 139 | data[*dptr] = ((data[*dptr] as i16 + i as i16 + 256) % 256) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: try: `i16::from(data[*dptr])` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting i8 to i16 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:139:54 [INFO] [stderr] | [INFO] [stderr] 139 | data[*dptr] = ((data[*dptr] as i16 + i as i16 + 256) % 256) as u8; [INFO] [stderr] | ^^^^^^^^ help: try: `i16::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting i16 to i64 may become silently lossy if types change [INFO] [stderr] --> src/interpreter/main.rs:145:41 [INFO] [stderr] | [INFO] [stderr] 145 | *dptr = (*dptr as i64 + i as i64) as usize; [INFO] [stderr] | ^^^^^^^^ help: try: `i64::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [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/interpreter/main.rs:177:40 [INFO] [stderr] | [INFO] [stderr] 177 | fn interpret_native<'a> (instructions: &Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: change this to: `&[Expression]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/interpreter/main.rs:194:34 [INFO] [stderr] | [INFO] [stderr] 194 | fn read_instructions (file_path: &String) -> [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: single-character string constant used as pattern [INFO] [stderr] --> src/interpreter/main.rs:210:35 [INFO] [stderr] | [INFO] [stderr] 210 | } else if arg.starts_with("-") { [INFO] [stderr] | ^^^ help: try using a char instead: `'-'` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::single_char_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/interpreter/main.rs:254:21 [INFO] [stderr] | [INFO] [stderr] 254 | fn compile (string: &String, flags: &CommandLineFlags) [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/interpreter/main.rs:279:22 [INFO] [stderr] | [INFO] [stderr] 279 | if flags.help || files.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `files.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.17s [INFO] running `"docker" "inspect" "8cf5c0e651ac350014df4e27c46e5c55cbe6c8e630383dea7a3773d0a42ec1d1"` [INFO] running `"docker" "rm" "-f" "8cf5c0e651ac350014df4e27c46e5c55cbe6c8e630383dea7a3773d0a42ec1d1"` [INFO] [stdout] 8cf5c0e651ac350014df4e27c46e5c55cbe6c8e630383dea7a3773d0a42ec1d1