[INFO] updating cached repository caporta/rust_fundamentals
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/caporta/rust_fundamentals
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/caporta/rust_fundamentals" "work/ex/clippy-test-run/sources/stable/gh/caporta/rust_fundamentals"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/caporta/rust_fundamentals'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/caporta/rust_fundamentals" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/caporta/rust_fundamentals"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/caporta/rust_fundamentals'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78a5378e3b3c9e32237f5f6bcc8083bd250e7b8d
[INFO] sha for GitHub repo caporta/rust_fundamentals: 78a5378e3b3c9e32237f5f6bcc8083bd250e7b8d
[INFO] validating manifest of caporta/rust_fundamentals 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 caporta/rust_fundamentals 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 caporta/rust_fundamentals
[INFO] finished frobbing caporta/rust_fundamentals
[INFO] frobbed toml for caporta/rust_fundamentals written to work/ex/clippy-test-run/sources/stable/gh/caporta/rust_fundamentals/Cargo.toml
[INFO] started frobbing caporta/rust_fundamentals
[INFO] finished frobbing caporta/rust_fundamentals
[INFO] frobbed toml for caporta/rust_fundamentals written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/caporta/rust_fundamentals/Cargo.toml
[INFO] crate caporta/rust_fundamentals 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 caporta/rust_fundamentals against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/caporta/rust_fundamentals:/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] 5c08a91b0337f12a5077c31b6c730636eee69143467eac0d1e14c1f3355af599
[INFO] running `"docker" "start" "-a" "5c08a91b0337f12a5077c31b6c730636eee69143467eac0d1e14c1f3355af599"`
[INFO] [stderr]     Checking hello_world v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let d:char = 'x'; // can be inferred
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let e = 2.5; // inferred double-precision, 8 bytes/64 bits (f64)
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f:f32 = 2.5; // double-precision, 4 bytes/32 bits (f32)
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let g = false;
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 9th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let h = 4 > 0; // true
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_variable`
[INFO] [stderr]  --> src/stack_and_heap.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[allow(unused_variable)]
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |           ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:14
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |              ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:19
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:22
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |                      ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let d:char = 'x'; // can be inferred
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let e = 2.5; // inferred double-precision, 8 bytes/64 bits (f64)
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f:f32 = 2.5; // double-precision, 4 bytes/32 bits (f32)
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let g = false;
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 9th binding whose name is just one char
[INFO] [stderr]   --> src/primitives.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let h = 4 > 0; // true
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_variable`
[INFO] [stderr]  --> src/stack_and_heap.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[allow(unused_variable)]
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |           ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:14
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |              ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:19
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/data_structures_2.rs:87:22
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ((c, d), (e, f)) = combined;
[INFO] [stderr]    |                      ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/primitives.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut c = 123456789; // inferred 32-bit signed int (i32)
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider: `123_456_789`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/data_structures_1.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/data_structures_1.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/primitives.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut c = 123456789; // inferred 32-bit signed int (i32)
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider: `123_456_789`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/data_structures_1.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/data_structures_1.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/stack_and_heap.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let x = 5; // i32 stored on the stack
[INFO] [stderr]    |         ^ help: consider using `_x` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/data_structures_2.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let u:&str = &letters; // d-ref conversions
[INFO] [stderr]    |         ^ help: consider using `_u` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]  --> src/pattern_matching.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stderr]   |         ^ help: consider using `_z` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `myLine`
[INFO] [stderr]   --> src/generics.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stderr]    |         ^^^^^^ help: consider using `_myLine` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/stack_and_heap.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let x = 5; // i32 stored on the stack
[INFO] [stderr]    |         ^ help: consider using `_x` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/data_structures_2.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let u:&str = &letters; // d-ref conversions
[INFO] [stderr]    |         ^ help: consider using `_u` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]  --> src/pattern_matching.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         z @ 9...11 => "lots of", //assign range to variable
[INFO] [stderr]   |         ^ help: consider using `_z` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `myLine`
[INFO] [stderr]   --> src/generics.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stderr]    |         ^^^^^^ help: consider using `_myLine` instead
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]  --> src/stack_and_heap.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     y: f64
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Red`
[INFO] [stderr]   --> src/data_structures_1.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Red, // "memberless struct"
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stderr]   --> src/data_structures_1.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Green, // "memberless struct"
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Blue`
[INFO] [stderr]   --> src/data_structures_1.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Blue, // etc...
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RGBColor`
[INFO] [stderr]   --> src/data_structures_1.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cyan`
[INFO] [stderr]   --> src/data_structures_1.rs:32:15
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `magenta`
[INFO] [stderr]   --> src/data_structures_1.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `yellow`
[INFO] [stderr]   --> src/data_structures_1.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |                                    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `start`
[INFO] [stderr]  --> src/generics.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     start: Point<T>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `end`
[INFO] [stderr]  --> src/generics.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     end: Point<T>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: useless lint attribute
[INFO] [stderr]  --> src/stack_and_heap.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[allow(dead_code)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![allow(dead_code)]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(clippy::useless_attribute)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_attribute
[INFO] [stderr] 
[INFO] [stderr] error: useless lint attribute
[INFO] [stderr]  --> src/stack_and_heap.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[allow(unused_variable)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![allow(unused_variable)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_attribute
[INFO] [stderr] 
[INFO] [stderr] warning: some ranges overlap
[INFO] [stderr]   --> src/control_flow.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         1...999 => "unknown", // inclusive range notation (opposite in most langs)
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_overlapping_arm)] on by default
[INFO] [stderr] note: overlaps with this
[INFO] [stderr]   --> src/control_flow.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         7 => "Russia",
[INFO] [stderr]    |         ^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_overlapping_arm
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]  --> src/stack_and_heap.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     y: f64
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Red`
[INFO] [stderr]   --> src/data_structures_1.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Red, // "memberless struct"
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stderr]   --> src/data_structures_1.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Green, // "memberless struct"
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Blue`
[INFO] [stderr]   --> src/data_structures_1.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Blue, // etc...
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RGBColor`
[INFO] [stderr]   --> src/data_structures_1.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cyan`
[INFO] [stderr]   --> src/data_structures_1.rs:32:15
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `magenta`
[INFO] [stderr]   --> src/data_structures_1.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `yellow`
[INFO] [stderr]   --> src/data_structures_1.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
[INFO] [stderr]    |                                    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `start`
[INFO] [stderr]  --> src/generics.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     start: Point<T>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `end`
[INFO] [stderr]  --> src/generics.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     end: Point<T>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
[INFO] [stderr]   --> src/data_structures_1.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let myLine = Line { start: p, end: p2 };
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: useless lint attribute
[INFO] [stderr]  --> src/stack_and_heap.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[allow(dead_code)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![allow(dead_code)]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(clippy::useless_attribute)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_attribute
[INFO] [stderr] 
[INFO] [stderr] error: useless lint attribute
[INFO] [stderr]  --> src/stack_and_heap.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[allow(unused_variable)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![allow(unused_variable)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_attribute
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `b`.
[INFO] [stderr]   --> src/data_structures_1.rs:90:14
[INFO] [stderr]    |
[INFO] [stderr] 90 |     for i in 0..b.len() { println!("{}", b[i]); }
[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] 90 |     for <item> in &b { println!("{}", b[i]); }
[INFO] [stderr]    |         ^^^^^^    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `mtx`
[INFO] [stderr]    --> src/data_structures_1.rs:100:14
[INFO] [stderr]     |
[INFO] [stderr] 100 |     for i in 0..mtx.len() {
[INFO] [stderr]     |              ^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 100 |     for (i, <item>) in mtx.iter().enumerate() {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: some ranges overlap
[INFO] [stderr]   --> src/control_flow.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         1...999 => "unknown", // inclusive range notation (opposite in most langs)
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_overlapping_arm)] on by default
[INFO] [stderr] note: overlaps with this
[INFO] [stderr]   --> src/control_flow.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         7 => "Russia",
[INFO] [stderr]    |         ^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_overlapping_arm
[INFO] [stderr] 
[INFO] [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
[INFO] [stderr]   --> src/data_structures_1.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let myLine = Line { start: p, end: p2 };
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/data_structures_2.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let mut a = 'a' as u8;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::char_lit_as_u8)] on by default
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'a'
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/data_structures_2.rs:34:16
[INFO] [stderr]    |
[INFO] [stderr] 34 |     while a <= ('z' as u8) {
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'z'
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
[INFO] [stderr]   --> src/generics.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `b`.
[INFO] [stderr]   --> src/data_structures_1.rs:90:14
[INFO] [stderr]    |
[INFO] [stderr] 90 |     for i in 0..b.len() { println!("{}", b[i]); }
[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] 90 |     for <item> in &b { println!("{}", b[i]); }
[INFO] [stderr]    |         ^^^^^^    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `mtx`
[INFO] [stderr]    --> src/data_structures_1.rs:100:14
[INFO] [stderr]     |
[INFO] [stderr] 100 |     for i in 0..mtx.len() {
[INFO] [stderr]     |              ^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 100 |     for (i, <item>) in mtx.iter().enumerate() {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/data_structures_2.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let mut a = 'a' as u8;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::char_lit_as_u8)] on by default
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'a'
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/data_structures_2.rs:34:16
[INFO] [stderr]    |
[INFO] [stderr] 34 |     while a <= ('z' as u8) {
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'z'
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `hello_world`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
[INFO] [stderr]   --> src/generics.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let myLine = Line { start: a, end: b };
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `hello_world`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5c08a91b0337f12a5077c31b6c730636eee69143467eac0d1e14c1f3355af599"`
[INFO] running `"docker" "rm" "-f" "5c08a91b0337f12a5077c31b6c730636eee69143467eac0d1e14c1f3355af599"`
[INFO] [stdout] 5c08a91b0337f12a5077c31b6c730636eee69143467eac0d1e14c1f3355af599