[INFO] updating cached repository roneesh/rust_book_exercises [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/roneesh/rust_book_exercises [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/roneesh/rust_book_exercises" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/roneesh/rust_book_exercises"` [INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/roneesh/rust_book_exercises'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/roneesh/rust_book_exercises" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/roneesh/rust_book_exercises"` [INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/roneesh/rust_book_exercises'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a36288522b8d9fecc1f4ab9b10180647c046aa2a [INFO] sha for GitHub repo roneesh/rust_book_exercises: a36288522b8d9fecc1f4ab9b10180647c046aa2a [INFO] validating manifest of roneesh/rust_book_exercises on toolchain master#a850a426491e14186af2250549bf41256b5938d2 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of roneesh/rust_book_exercises on toolchain try#06a150c7d11500b41499224f165e9de1de096768 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing roneesh/rust_book_exercises [INFO] finished frobbing roneesh/rust_book_exercises [INFO] frobbed toml for roneesh/rust_book_exercises written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/roneesh/rust_book_exercises/Cargo.toml [INFO] started frobbing roneesh/rust_book_exercises [INFO] finished frobbing roneesh/rust_book_exercises [INFO] frobbed toml for roneesh/rust_book_exercises written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/roneesh/rust_book_exercises/Cargo.toml [INFO] crate roneesh/rust_book_exercises already has a lockfile, it will not be regenerated [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking roneesh/rust_book_exercises against try#06a150c7d11500b41499224f165e9de1de096768 for pr-60162 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-5/try#06a150c7d11500b41499224f165e9de1de096768:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/roneesh/rust_book_exercises:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+06a150c7d11500b41499224f165e9de1de096768-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 6fe5d4e58fb19f1db6e4c3a32a917772ab26a24f299f5361f3ec4c7dc05a172a [INFO] running `"docker" "start" "-a" "6fe5d4e58fb19f1db6e4c3a32a917772ab26a24f299f5361f3ec4c7dc05a172a"` [INFO] [stderr] Checking rust_book_exercises v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | x + 1 [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unreachable_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:4:6 [INFO] [stderr] | [INFO] [stderr] 4 | let x = 5; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:5:7 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:5:10 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `roneesh` [INFO] [stderr] --> src/main.rs:5:13 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_roneesh` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:7:6 [INFO] [stderr] | [INFO] [stderr] 7 | let z : i32 = 5; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: variable `a` is assigned to, but never used [INFO] [stderr] --> src/main.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | let mut a = 5; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_a` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `a` is never read [INFO] [stderr] --> src/main.rs:10:2 [INFO] [stderr] | [INFO] [stderr] 10 | a = 10; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_assignments)] on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:12:6 [INFO] [stderr] | [INFO] [stderr] 12 | let b: i32; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `x` is never read [INFO] [stderr] --> src/main.rs:35:10 [INFO] [stderr] | [INFO] [stderr] 35 | let mut x: i32 = 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:37:6 [INFO] [stderr] | [INFO] [stderr] 37 | let x = x; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:39:6 [INFO] [stderr] | [INFO] [stderr] 39 | let y = 4; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:40:6 [INFO] [stderr] | [INFO] [stderr] 40 | let y = "I can also be bound to text!"; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:94:9 [INFO] [stderr] | [INFO] [stderr] 94 | let f : fn(i32) -> i32; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:100:9 [INFO] [stderr] | [INFO] [stderr] 100 | let f: fn(i32) -> i32 = plus_one; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/main.rs:102:9 [INFO] [stderr] | [INFO] [stderr] 102 | let six = f(5); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_six` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:111:9 [INFO] [stderr] | [INFO] [stderr] 111 | let x = true; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | let x = 42; // x has type of i32 now [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let y = 1.0; // y has type of f64 now [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | let a = [1,2,3]; // array of types i32, 3 elements [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:121:13 [INFO] [stderr] | [INFO] [stderr] 121 | let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:122:9 [INFO] [stderr] | [INFO] [stderr] 122 | let a = [0; 20]; // arry of 20 i32 elements [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tup` [INFO] [stderr] --> src/main.rs:134:9 [INFO] [stderr] | [INFO] [stderr] 134 | let tup = (1, "hello"); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_tup` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tup2` [INFO] [stderr] --> src/main.rs:135:9 [INFO] [stderr] | [INFO] [stderr] 135 | let tup2 : (i32, &str) = (1, "hello"); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_tup2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:137:10 [INFO] [stderr] | [INFO] [stderr] 137 | let (x,y,z) = (1, "hello", 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:137:12 [INFO] [stderr] | [INFO] [stderr] 137 | let (x,y,z) = (1, "hello", 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:143:9 [INFO] [stderr] | [INFO] [stderr] 143 | let y = tuppy.1; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:144:9 [INFO] [stderr] | [INFO] [stderr] 144 | let z = tuppy.2; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/main.rs:218:9 [INFO] [stderr] | [INFO] [stderr] 218 | let v = vec![1,2,3,4,5];// v: Vec [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_v` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:256:9 [INFO] [stderr] | [INFO] [stderr] 256 | let v2 = v; [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:269:9 [INFO] [stderr] | [INFO] [stderr] 269 | let c : bool = flip(b); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:287:10 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:287:14 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `answer` [INFO] [stderr] --> src/main.rs:287:18 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_answer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `answer` [INFO] [stderr] --> src/main.rs:308:9 [INFO] [stderr] | [INFO] [stderr] 308 | let answer = noo(&v1, &v2); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_answer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> src/main.rs:377:13 [INFO] [stderr] | [INFO] [stderr] 377 | let origin = Point(0,0,0); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/main.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let black = Color(0,0,0); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `white` [INFO] [stderr] --> src/main.rs:381:9 [INFO] [stderr] | [INFO] [stderr] 381 | let white = Color(255,255,255); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_white` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `length` [INFO] [stderr] --> src/main.rs:387:9 [INFO] [stderr] | [INFO] [stderr] 387 | let length = Inches(10); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_length` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:390:9 [INFO] [stderr] | [INFO] [stderr] 390 | let x = Electron; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:298:12 [INFO] [stderr] | [INFO] [stderr] 298 | fn noo(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:298:27 [INFO] [stderr] | [INFO] [stderr] 298 | fn noo(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:448:21 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `g` [INFO] [stderr] --> src/main.rs:448:29 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_g` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:448:37 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:449:20 [INFO] [stderr] | [INFO] [stderr] 449 | fn move_cursor(x: i32, y: i32) { println!("move()"); } [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:449:28 [INFO] [stderr] | [INFO] [stderr] 449 | fn move_cursor(x: i32, y: i32) { println!("move()"); } [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:121:9 [INFO] [stderr] | [INFO] [stderr] 121 | let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `foo` [INFO] [stderr] --> src/main.rs:49:2 [INFO] [stderr] | [INFO] [stderr] 49 | fn foo() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `foo` [INFO] [stderr] --> src/main.rs:73:6 [INFO] [stderr] | [INFO] [stderr] 73 | {fn foo(x: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `foo` [INFO] [stderr] --> src/main.rs:81:6 [INFO] [stderr] | [INFO] [stderr] 81 | {fn foo(x: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | fn diverges() -> ! { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:404:9 [INFO] [stderr] | [INFO] [stderr] 404 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:413:9 [INFO] [stderr] | [INFO] [stderr] 413 | Move { squares: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable `linesEnum` should have a snake case name [INFO] [stderr] --> src/main.rs:182:9 [INFO] [stderr] | [INFO] [stderr] 182 | let linesEnum = lines.enumerate(); [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `lines_enum` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable `charsEnum` should have a snake case name [INFO] [stderr] --> src/main.rs:189:9 [INFO] [stderr] | [INFO] [stderr] 189 | let charsEnum = "hello world".chars().enumerate(); [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `chars_enum` [INFO] [stderr] [INFO] [stderr] warning: variable `charNumber` should have a snake case name [INFO] [stderr] --> src/main.rs:190:10 [INFO] [stderr] | [INFO] [stderr] 190 | for (charNumber, charItem) in charsEnum { [INFO] [stderr] | ^^^^^^^^^^ help: convert the identifier to snake case: `char_number` [INFO] [stderr] [INFO] [stderr] warning: variable `charItem` should have a snake case name [INFO] [stderr] --> src/main.rs:190:22 [INFO] [stderr] | [INFO] [stderr] 190 | for (charNumber, charItem) in charsEnum { [INFO] [stderr] | ^^^^^^^^ help: convert the identifier to snake case: `char_item` [INFO] [stderr] [INFO] [stderr] warning: function `MessageWriter` should have a snake case name [INFO] [stderr] --> src/main.rs:424:8 [INFO] [stderr] | [INFO] [stderr] 424 | fn MessageWriter(x: String) -> Message { [INFO] [stderr] | ^^^^^^^^^^^^^ help: convert the identifier to snake case: `message_writer` [INFO] [stderr] [INFO] [stderr] warning: the `x:` in this pattern is redundant [INFO] [stderr] --> src/main.rs:455:27 [INFO] [stderr] | [INFO] [stderr] 455 | Message::Move{x: x, y: y} => move_cursor(x,y), [INFO] [stderr] | --^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_shorthand_field_patterns)] on by default [INFO] [stderr] [INFO] [stderr] warning: the `y:` in this pattern is redundant [INFO] [stderr] --> src/main.rs:455:33 [INFO] [stderr] | [INFO] [stderr] 455 | Message::Move{x: x, y: y} => move_cursor(x,y), [INFO] [stderr] | --^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | x + 1 [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unreachable_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:4:6 [INFO] [stderr] | [INFO] [stderr] 4 | let x = 5; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:5:7 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:5:10 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `roneesh` [INFO] [stderr] --> src/main.rs:5:13 [INFO] [stderr] | [INFO] [stderr] 5 | let (x, y, roneesh) = (1, 2, 3); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_roneesh` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:7:6 [INFO] [stderr] | [INFO] [stderr] 7 | let z : i32 = 5; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: variable `a` is assigned to, but never used [INFO] [stderr] --> src/main.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | let mut a = 5; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_a` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `a` is never read [INFO] [stderr] --> src/main.rs:10:2 [INFO] [stderr] | [INFO] [stderr] 10 | a = 10; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_assignments)] on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:12:6 [INFO] [stderr] | [INFO] [stderr] 12 | let b: i32; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `x` is never read [INFO] [stderr] --> src/main.rs:35:10 [INFO] [stderr] | [INFO] [stderr] 35 | let mut x: i32 = 1; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:37:6 [INFO] [stderr] | [INFO] [stderr] 37 | let x = x; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:39:6 [INFO] [stderr] | [INFO] [stderr] 39 | let y = 4; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:40:6 [INFO] [stderr] | [INFO] [stderr] 40 | let y = "I can also be bound to text!"; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:94:9 [INFO] [stderr] | [INFO] [stderr] 94 | let f : fn(i32) -> i32; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:100:9 [INFO] [stderr] | [INFO] [stderr] 100 | let f: fn(i32) -> i32 = plus_one; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/main.rs:102:9 [INFO] [stderr] | [INFO] [stderr] 102 | let six = f(5); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_six` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:111:9 [INFO] [stderr] | [INFO] [stderr] 111 | let x = true; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | let x = 42; // x has type of i32 now [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let y = 1.0; // y has type of f64 now [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | let a = [1,2,3]; // array of types i32, 3 elements [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:121:13 [INFO] [stderr] | [INFO] [stderr] 121 | let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:122:9 [INFO] [stderr] | [INFO] [stderr] 122 | let a = [0; 20]; // arry of 20 i32 elements [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tup` [INFO] [stderr] --> src/main.rs:134:9 [INFO] [stderr] | [INFO] [stderr] 134 | let tup = (1, "hello"); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_tup` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `tup2` [INFO] [stderr] --> src/main.rs:135:9 [INFO] [stderr] | [INFO] [stderr] 135 | let tup2 : (i32, &str) = (1, "hello"); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_tup2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:137:10 [INFO] [stderr] | [INFO] [stderr] 137 | let (x,y,z) = (1, "hello", 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:137:12 [INFO] [stderr] | [INFO] [stderr] 137 | let (x,y,z) = (1, "hello", 3); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:143:9 [INFO] [stderr] | [INFO] [stderr] 143 | let y = tuppy.1; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:144:9 [INFO] [stderr] | [INFO] [stderr] 144 | let z = tuppy.2; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/main.rs:218:9 [INFO] [stderr] | [INFO] [stderr] 218 | let v = vec![1,2,3,4,5];// v: Vec [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_v` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:256:9 [INFO] [stderr] | [INFO] [stderr] 256 | let v2 = v; [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:269:9 [INFO] [stderr] | [INFO] [stderr] 269 | let c : bool = flip(b); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:287:10 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:287:14 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `answer` [INFO] [stderr] --> src/main.rs:287:18 [INFO] [stderr] | [INFO] [stderr] 287 | let (v1, v2, answer) = boo(v1, v2); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_answer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `answer` [INFO] [stderr] --> src/main.rs:308:9 [INFO] [stderr] | [INFO] [stderr] 308 | let answer = noo(&v1, &v2); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_answer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> src/main.rs:377:13 [INFO] [stderr] | [INFO] [stderr] 377 | let origin = Point(0,0,0); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/main.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let black = Color(0,0,0); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `white` [INFO] [stderr] --> src/main.rs:381:9 [INFO] [stderr] | [INFO] [stderr] 381 | let white = Color(255,255,255); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_white` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `length` [INFO] [stderr] --> src/main.rs:387:9 [INFO] [stderr] | [INFO] [stderr] 387 | let length = Inches(10); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_length` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:390:9 [INFO] [stderr] | [INFO] [stderr] 390 | let x = Electron; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:298:12 [INFO] [stderr] | [INFO] [stderr] 298 | fn noo(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:298:27 [INFO] [stderr] | [INFO] [stderr] 298 | fn noo(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r` [INFO] [stderr] --> src/main.rs:448:21 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_r` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `g` [INFO] [stderr] --> src/main.rs:448:29 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_g` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:448:37 [INFO] [stderr] | [INFO] [stderr] 448 | fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");} [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:449:20 [INFO] [stderr] | [INFO] [stderr] 449 | fn move_cursor(x: i32, y: i32) { println!("move()"); } [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:449:28 [INFO] [stderr] | [INFO] [stderr] 449 | fn move_cursor(x: i32, y: i32) { println!("move()"); } [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:121:9 [INFO] [stderr] | [INFO] [stderr] 121 | let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable `linesEnum` should have a snake case name [INFO] [stderr] --> src/main.rs:182:9 [INFO] [stderr] | [INFO] [stderr] 182 | let linesEnum = lines.enumerate(); [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `lines_enum` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable `charsEnum` should have a snake case name [INFO] [stderr] --> src/main.rs:189:9 [INFO] [stderr] | [INFO] [stderr] 189 | let charsEnum = "hello world".chars().enumerate(); [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `chars_enum` [INFO] [stderr] [INFO] [stderr] warning: variable `charNumber` should have a snake case name [INFO] [stderr] --> src/main.rs:190:10 [INFO] [stderr] | [INFO] [stderr] 190 | for (charNumber, charItem) in charsEnum { [INFO] [stderr] | ^^^^^^^^^^ help: convert the identifier to snake case: `char_number` [INFO] [stderr] [INFO] [stderr] warning: variable `charItem` should have a snake case name [INFO] [stderr] --> src/main.rs:190:22 [INFO] [stderr] | [INFO] [stderr] 190 | for (charNumber, charItem) in charsEnum { [INFO] [stderr] | ^^^^^^^^ help: convert the identifier to snake case: `char_item` [INFO] [stderr] [INFO] [stderr] warning: function `MessageWriter` should have a snake case name [INFO] [stderr] --> src/main.rs:424:8 [INFO] [stderr] | [INFO] [stderr] 424 | fn MessageWriter(x: String) -> Message { [INFO] [stderr] | ^^^^^^^^^^^^^ help: convert the identifier to snake case: `message_writer` [INFO] [stderr] [INFO] [stderr] warning: the `x:` in this pattern is redundant [INFO] [stderr] --> src/main.rs:455:27 [INFO] [stderr] | [INFO] [stderr] 455 | Message::Move{x: x, y: y} => move_cursor(x,y), [INFO] [stderr] | --^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_shorthand_field_patterns)] on by default [INFO] [stderr] [INFO] [stderr] warning: the `y:` in this pattern is redundant [INFO] [stderr] --> src/main.rs:455:33 [INFO] [stderr] | [INFO] [stderr] 455 | Message::Move{x: x, y: y} => move_cursor(x,y), [INFO] [stderr] | --^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.62s [INFO] running `"docker" "inspect" "6fe5d4e58fb19f1db6e4c3a32a917772ab26a24f299f5361f3ec4c7dc05a172a"` [INFO] running `"docker" "rm" "-f" "6fe5d4e58fb19f1db6e4c3a32a917772ab26a24f299f5361f3ec4c7dc05a172a"` [INFO] [stdout] 6fe5d4e58fb19f1db6e4c3a32a917772ab26a24f299f5361f3ec4c7dc05a172a