[INFO] updating cached repository categulario/rust_shell [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/categulario/rust_shell [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/categulario/rust_shell" "work/ex/clippy-test-run/sources/stable/gh/categulario/rust_shell"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/categulario/rust_shell'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/categulario/rust_shell" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/categulario/rust_shell"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/categulario/rust_shell'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 78ee7701c4317f270ce3336731b9536f131df7d0 [INFO] sha for GitHub repo categulario/rust_shell: 78ee7701c4317f270ce3336731b9536f131df7d0 [INFO] validating manifest of categulario/rust_shell 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 categulario/rust_shell 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 categulario/rust_shell [INFO] finished frobbing categulario/rust_shell [INFO] frobbed toml for categulario/rust_shell written to work/ex/clippy-test-run/sources/stable/gh/categulario/rust_shell/Cargo.toml [INFO] started frobbing categulario/rust_shell [INFO] finished frobbing categulario/rust_shell [INFO] frobbed toml for categulario/rust_shell written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/categulario/rust_shell/Cargo.toml [INFO] crate categulario/rust_shell 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 categulario/rust_shell 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/categulario/rust_shell:/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] b7ba6388ef439b421af26e69d75e59d5ebe3906e61bba9ab8cd33ecbd3b618af [INFO] running `"docker" "start" "-a" "b7ba6388ef439b421af26e69d75e59d5ebe3906e61bba9ab8cd33ecbd3b618af"` [INFO] [stderr] Checking rust_shell v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/parser.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | return c.is_alphanumeric() || c == '-'; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `c.is_alphanumeric() || c == '-'` [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/tree.rs:190:9 [INFO] [stderr] | [INFO] [stderr] 190 | / return Ok(Expr { [INFO] [stderr] 191 | | value: SemicolonExpr::from_tokens(tokens)?, [INFO] [stderr] 192 | | }); [INFO] [stderr] | |___________^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] help: remove `return` as shown [INFO] [stderr] | [INFO] [stderr] 190 | Ok(Expr { [INFO] [stderr] 191 | value: SemicolonExpr::from_tokens(tokens)?, [INFO] [stderr] 192 | }) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/parser.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | return c.is_alphanumeric() || c == '-'; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `c.is_alphanumeric() || c == '-'` [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/tree.rs:190:9 [INFO] [stderr] | [INFO] [stderr] 190 | / return Ok(Expr { [INFO] [stderr] 191 | | value: SemicolonExpr::from_tokens(tokens)?, [INFO] [stderr] 192 | | }); [INFO] [stderr] | |___________^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] help: remove `return` as shown [INFO] [stderr] | [INFO] [stderr] 190 | Ok(Expr { [INFO] [stderr] 191 | value: SemicolonExpr::from_tokens(tokens)?, [INFO] [stderr] 192 | }) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Word` [INFO] [stderr] --> src/parser.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Word(String), [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `DoubleQuotedString` [INFO] [stderr] --> src/parser.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | DoubleQuotedString(String), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `SingleQuotedString` [INFO] [stderr] --> src/parser.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | SingleQuotedString(String), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Or` [INFO] [stderr] --> src/parser.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | Or, [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `And` [INFO] [stderr] --> src/parser.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | And, [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Parenthesis` [INFO] [stderr] --> src/parser.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | Parenthesis(char), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Pipe` [INFO] [stderr] --> src/parser.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Pipe, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Semicolon` [INFO] [stderr] --> src/parser.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | Semicolon, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `UnterminatedQuote` [INFO] [stderr] --> src/parser.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | UnterminatedQuote, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `IncompleteAnd` [INFO] [stderr] --> src/parser.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | IncompleteAnd, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `InvalidCharacter` [INFO] [stderr] --> src/parser.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | InvalidCharacter, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `is_word` [INFO] [stderr] --> src/parser.rs:23:1 [INFO] [stderr] | [INFO] [stderr] 23 | fn is_word(c: char) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_word` [INFO] [stderr] --> src/parser.rs:27:1 [INFO] [stderr] | [INFO] [stderr] 27 | fn get_word>(iter: &mut Peekable) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_double_quoted_string` [INFO] [stderr] --> src/parser.rs:42:1 [INFO] [stderr] | [INFO] [stderr] 42 | / fn get_double_quoted_string>( [INFO] [stderr] 43 | | iter: &mut Peekable, [INFO] [stderr] 44 | | ) -> Result { [INFO] [stderr] 45 | | let mut result = String::from("\""); [INFO] [stderr] ... | [INFO] [stderr] 59 | | Err(ParseError::UnterminatedQuote) [INFO] [stderr] 60 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_single_quoted_string` [INFO] [stderr] --> src/parser.rs:62:1 [INFO] [stderr] | [INFO] [stderr] 62 | / fn get_single_quoted_string>( [INFO] [stderr] 63 | | iter: &mut Peekable, [INFO] [stderr] 64 | | ) -> Result { [INFO] [stderr] 65 | | let mut result = String::from("\'"); [INFO] [stderr] ... | [INFO] [stderr] 79 | | Err(ParseError::UnterminatedQuote) [INFO] [stderr] 80 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_and` [INFO] [stderr] --> src/parser.rs:82:1 [INFO] [stderr] | [INFO] [stderr] 82 | fn get_and>(iter: &mut Peekable) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_or_pipe` [INFO] [stderr] --> src/parser.rs:94:1 [INFO] [stderr] | [INFO] [stderr] 94 | fn get_or_pipe>(iter: &mut Peekable) -> TokenType { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `parse` [INFO] [stderr] --> src/parser.rs:106:1 [INFO] [stderr] | [INFO] [stderr] 106 | pub fn parse(line: &String) -> Result, ParseError> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/parser.rs:106:20 [INFO] [stderr] | [INFO] [stderr] 106 | pub fn parse(line: &String) -> Result, ParseError> { [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] error: this `if` has identical blocks [INFO] [stderr] --> src/parser.rs:129:28 [INFO] [stderr] | [INFO] [stderr] 129 | } else if c == ')' { [INFO] [stderr] | ____________________________^ [INFO] [stderr] 130 | | tokens.push(TokenType::Parenthesis(c)); [INFO] [stderr] 131 | | it.next(); [INFO] [stderr] 132 | | } else if is_word(c) { [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::if_same_then_else)] on by default [INFO] [stderr] note: same as this [INFO] [stderr] --> src/parser.rs:126:28 [INFO] [stderr] | [INFO] [stderr] 126 | } else if c == '(' { [INFO] [stderr] | ____________________________^ [INFO] [stderr] 127 | | tokens.push(TokenType::Parenthesis(c)); [INFO] [stderr] 128 | | it.next(); [INFO] [stderr] 129 | | } else if c == ')' { [INFO] [stderr] | |_________^ [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/process.rs:24:12 [INFO] [stderr] | [INFO] [stderr] 24 | if process.arguments.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `process.arguments.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: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise [INFO] [stderr] --> src/process.rs:37:23 [INFO] [stderr] | [INFO] [stderr] 37 | let cd = &process.arguments.get(0).unwrap().to_string(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&process.arguments[0]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::get_unwrap)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap [INFO] [stderr] [INFO] [stderr] warning: redundant pattern matching, consider using `is_err()` [INFO] [stderr] --> src/process.rs:50:12 [INFO] [stderr] | [INFO] [stderr] 50 | if let Err(_) = Command::new(process.command) [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_pattern_matching)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 50 | if Command::new(process.command) [INFO] [stderr] 51 | .args(process.arguments) [INFO] [stderr] 52 | .stdout(Stdio::inherit()) [INFO] [stderr] 53 | .stderr(Stdio::inherit()) [INFO] [stderr] 54 | .output().is_err() [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result` [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | io::stdout().flush().ok().expect("Could not flush stdout"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::ok_expect)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/main.rs:26:12 [INFO] [stderr] | [INFO] [stderr] 26 | if buf.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | process::receive_command(&mut buf.split_whitespace().collect()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: Could not compile `rust_shell`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/parser.rs:106:20 [INFO] [stderr] | [INFO] [stderr] 106 | pub fn parse(line: &String) -> Result, ParseError> { [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] error: this `if` has identical blocks [INFO] [stderr] --> src/parser.rs:129:28 [INFO] [stderr] | [INFO] [stderr] 129 | } else if c == ')' { [INFO] [stderr] | ____________________________^ [INFO] [stderr] 130 | | tokens.push(TokenType::Parenthesis(c)); [INFO] [stderr] 131 | | it.next(); [INFO] [stderr] 132 | | } else if is_word(c) { [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::if_same_then_else)] on by default [INFO] [stderr] note: same as this [INFO] [stderr] --> src/parser.rs:126:28 [INFO] [stderr] | [INFO] [stderr] 126 | } else if c == '(' { [INFO] [stderr] | ____________________________^ [INFO] [stderr] 127 | | tokens.push(TokenType::Parenthesis(c)); [INFO] [stderr] 128 | | it.next(); [INFO] [stderr] 129 | | } else if c == ')' { [INFO] [stderr] | |_________^ [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/process.rs:24:12 [INFO] [stderr] | [INFO] [stderr] 24 | if process.arguments.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `process.arguments.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: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise [INFO] [stderr] --> src/process.rs:37:23 [INFO] [stderr] | [INFO] [stderr] 37 | let cd = &process.arguments.get(0).unwrap().to_string(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&process.arguments[0]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::get_unwrap)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap [INFO] [stderr] [INFO] [stderr] warning: redundant pattern matching, consider using `is_err()` [INFO] [stderr] --> src/process.rs:50:12 [INFO] [stderr] | [INFO] [stderr] 50 | if let Err(_) = Command::new(process.command) [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_pattern_matching)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 50 | if Command::new(process.command) [INFO] [stderr] 51 | .args(process.arguments) [INFO] [stderr] 52 | .stdout(Stdio::inherit()) [INFO] [stderr] 53 | .stderr(Stdio::inherit()) [INFO] [stderr] 54 | .output().is_err() [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result` [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | io::stdout().flush().ok().expect("Could not flush stdout"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::ok_expect)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/main.rs:26:12 [INFO] [stderr] | [INFO] [stderr] 26 | if buf.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buf.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | process::receive_command(&mut buf.split_whitespace().collect()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: Could not compile `rust_shell`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "b7ba6388ef439b421af26e69d75e59d5ebe3906e61bba9ab8cd33ecbd3b618af"` [INFO] running `"docker" "rm" "-f" "b7ba6388ef439b421af26e69d75e59d5ebe3906e61bba9ab8cd33ecbd3b618af"` [INFO] [stdout] b7ba6388ef439b421af26e69d75e59d5ebe3906e61bba9ab8cd33ecbd3b618af