Nov 16 15:27:16.886 INFO testing roneesh/rust_book_exercises against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 15:27:16.887 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 15:27:17.099 INFO [stdout] e8638d452dd4fec78d6d7c6d3cc47c92c05535bb5961c78b180181724b9e4dde
Nov 16 15:27:17.103 INFO running `"docker" "start" "-a" "e8638d452dd4fec78d6d7c6d3cc47c92c05535bb5961c78b180181724b9e4dde"`
Nov 16 15:27:17.978 INFO [stderr] usermod: no changes
Nov 16 15:27:18.011 INFO [stderr]    Compiling rust_book_exercises v0.1.0 (/source)
Nov 16 15:27:18.311 INFO [stderr] warning: unreachable expression
Nov 16 15:27:18.311 INFO [stderr]   --> src/main.rs:77:9
Nov 16 15:27:18.311 INFO [stderr]    |
Nov 16 15:27:18.311 INFO [stderr] 77 |         x + 1
Nov 16 15:27:18.311 INFO [stderr]    |         ^^^^^
Nov 16 15:27:18.311 INFO [stderr]    |
Nov 16 15:27:18.311 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Nov 16 15:27:18.311 INFO [stderr] 
Nov 16 15:27:18.329 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.329 INFO [stderr]  --> src/main.rs:4:6
Nov 16 15:27:18.329 INFO [stderr]   |
Nov 16 15:27:18.329 INFO [stderr] 4 |     let x = 5;
Nov 16 15:27:18.329 INFO [stderr]   |         ^ help: consider using `_x` instead
Nov 16 15:27:18.329 INFO [stderr]   |
Nov 16 15:27:18.329 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 16 15:27:18.329 INFO [stderr] 
Nov 16 15:27:18.329 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.329 INFO [stderr]  --> src/main.rs:5:7
Nov 16 15:27:18.329 INFO [stderr]   |
Nov 16 15:27:18.329 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:18.329 INFO [stderr]   |          ^ help: consider using `_x` instead
Nov 16 15:27:18.329 INFO [stderr] 
Nov 16 15:27:18.329 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.329 INFO [stderr]  --> src/main.rs:5:10
Nov 16 15:27:18.329 INFO [stderr]   |
Nov 16 15:27:18.329 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:18.329 INFO [stderr]   |             ^ help: consider using `_y` instead
Nov 16 15:27:18.329 INFO [stderr] 
Nov 16 15:27:18.329 INFO [stderr] warning: unused variable: `roneesh`
Nov 16 15:27:18.329 INFO [stderr]  --> src/main.rs:5:13
Nov 16 15:27:18.329 INFO [stderr]   |
Nov 16 15:27:18.329 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:18.329 INFO [stderr]   |                ^^^^^^^ help: consider using `_roneesh` instead
Nov 16 15:27:18.329 INFO [stderr] 
Nov 16 15:27:18.329 INFO [stderr] warning: unused variable: `z`
Nov 16 15:27:18.330 INFO [stderr]  --> src/main.rs:7:6
Nov 16 15:27:18.330 INFO [stderr]   |
Nov 16 15:27:18.330 INFO [stderr] 7 |     let z : i32 = 5;
Nov 16 15:27:18.330 INFO [stderr]   |         ^ help: consider using `_z` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: variable `a` is assigned to, but never used
Nov 16 15:27:18.330 INFO [stderr]  --> src/main.rs:9:10
Nov 16 15:27:18.330 INFO [stderr]   |
Nov 16 15:27:18.330 INFO [stderr] 9 |     let mut a = 5;
Nov 16 15:27:18.330 INFO [stderr]   |             ^
Nov 16 15:27:18.330 INFO [stderr]   |
Nov 16 15:27:18.330 INFO [stderr]   = note: consider using `_a` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: value assigned to `a` is never read
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:10:2
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 10 |     a = 10;
Nov 16 15:27:18.330 INFO [stderr]    |     ^
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `b`
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:12:6
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 12 |     let b: i32;
Nov 16 15:27:18.330 INFO [stderr]    |         ^ help: consider using `_b` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: value assigned to `x` is never read
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:35:10
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 35 |     let mut x: i32 = 1;
Nov 16 15:27:18.330 INFO [stderr]    |             ^
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:37:6
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 37 |     let x = x;
Nov 16 15:27:18.330 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:39:6
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 39 |     let y = 4;
Nov 16 15:27:18.330 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:40:6
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 40 |     let y = "I can also be bound to text!"; 
Nov 16 15:27:18.330 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `f`
Nov 16 15:27:18.330 INFO [stderr]   --> src/main.rs:94:9
Nov 16 15:27:18.330 INFO [stderr]    |
Nov 16 15:27:18.330 INFO [stderr] 94 |     let f : fn(i32) -> i32;
Nov 16 15:27:18.330 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `f`
Nov 16 15:27:18.330 INFO [stderr]    --> src/main.rs:100:9
Nov 16 15:27:18.330 INFO [stderr]     |
Nov 16 15:27:18.330 INFO [stderr] 100 |     let f: fn(i32) -> i32 = plus_one;
Nov 16 15:27:18.330 INFO [stderr]     |         ^ help: consider using `_f` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `six`
Nov 16 15:27:18.330 INFO [stderr]    --> src/main.rs:102:9
Nov 16 15:27:18.330 INFO [stderr]     |
Nov 16 15:27:18.330 INFO [stderr] 102 |     let six = f(5);
Nov 16 15:27:18.330 INFO [stderr]     |         ^^^ help: consider using `_six` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.330 INFO [stderr]    --> src/main.rs:111:9
Nov 16 15:27:18.330 INFO [stderr]     |
Nov 16 15:27:18.330 INFO [stderr] 111 |     let x = true;
Nov 16 15:27:18.330 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.330 INFO [stderr]    --> src/main.rs:117:9
Nov 16 15:27:18.330 INFO [stderr]     |
Nov 16 15:27:18.330 INFO [stderr] 117 |     let x = 42; // x has type of i32 now
Nov 16 15:27:18.330 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:18.330 INFO [stderr] 
Nov 16 15:27:18.330 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:118:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 118 |     let y = 1.0; // y has type of f64 now
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_y` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `a`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:120:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 120 |     let a = [1,2,3]; // array of types i32, 3 elements
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_a` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `m`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:121:13
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 121 |     let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable
Nov 16 15:27:18.331 INFO [stderr]     |             ^ help: consider using `_m` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `a`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:122:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 122 |     let a = [0; 20]; // arry of 20 i32 elements
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_a` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `tup`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:134:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 134 |     let tup = (1, "hello");
Nov 16 15:27:18.331 INFO [stderr]     |         ^^^ help: consider using `_tup` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `tup2`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:135:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 135 |     let tup2 : (i32, &str) = (1, "hello");
Nov 16 15:27:18.331 INFO [stderr]     |         ^^^^ help: consider using `_tup2` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:137:10
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 137 |     let (x,y,z) = (1, "hello", 3);
Nov 16 15:27:18.331 INFO [stderr]     |          ^ help: consider using `_x` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:137:12
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 137 |     let (x,y,z) = (1, "hello", 3);
Nov 16 15:27:18.331 INFO [stderr]     |            ^ help: consider using `_y` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:143:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 143 |     let y = tuppy.1;
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_y` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `z`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:144:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 144 |     let z = tuppy.2;
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_z` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `v`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:218:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 218 |     let v = vec![1,2,3,4,5];// v: Vec<i32>
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_v` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:256:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 256 |     let v2 = v; 
Nov 16 15:27:18.331 INFO [stderr]     |         ^^ help: consider using `_v2` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `c`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:269:9
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 269 |     let c : bool = flip(b);
Nov 16 15:27:18.331 INFO [stderr]     |         ^ help: consider using `_c` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `v1`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:287:10
Nov 16 15:27:18.331 INFO [stderr]     |
Nov 16 15:27:18.331 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:18.331 INFO [stderr]     |          ^^ help: consider using `_v1` instead
Nov 16 15:27:18.331 INFO [stderr] 
Nov 16 15:27:18.331 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:18.331 INFO [stderr]    --> src/main.rs:287:14
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:18.332 INFO [stderr]     |              ^^ help: consider using `_v2` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `answer`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:287:18
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:18.332 INFO [stderr]     |                  ^^^^^^ help: consider using `_answer` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `answer`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:308:9
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 308 |     let answer = noo(&v1, &v2);
Nov 16 15:27:18.332 INFO [stderr]     |         ^^^^^^ help: consider using `_answer` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `origin`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:377:13
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 377 |         let origin = Point(0,0,0);
Nov 16 15:27:18.332 INFO [stderr]     |             ^^^^^^ help: consider using `_origin` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `black`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:380:9
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 380 |     let black = Color(0,0,0);
Nov 16 15:27:18.332 INFO [stderr]     |         ^^^^^ help: consider using `_black` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `white`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:381:9
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 381 |     let white = Color(255,255,255);
Nov 16 15:27:18.332 INFO [stderr]     |         ^^^^^ help: consider using `_white` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `length`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:387:9
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 387 |     let length = Inches(10);
Nov 16 15:27:18.332 INFO [stderr]     |         ^^^^^^ help: consider using `_length` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:390:9
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 390 |     let x = Electron;
Nov 16 15:27:18.332 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `v1`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:298:12
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 298 |     fn noo(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
Nov 16 15:27:18.332 INFO [stderr]     |            ^^ help: consider using `_v1` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:298:27
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 298 |     fn noo(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
Nov 16 15:27:18.332 INFO [stderr]     |                           ^^ help: consider using `_v2` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `r`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:448:21
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:18.332 INFO [stderr]     |                     ^ help: consider using `_r` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `g`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:448:29
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:18.332 INFO [stderr]     |                             ^ help: consider using `_g` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `b`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:448:37
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:18.332 INFO [stderr]     |                                     ^ help: consider using `_b` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.332 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:18.332 INFO [stderr]    --> src/main.rs:449:20
Nov 16 15:27:18.332 INFO [stderr]     |
Nov 16 15:27:18.332 INFO [stderr] 449 |     fn move_cursor(x: i32, y: i32) { println!("move()"); }
Nov 16 15:27:18.332 INFO [stderr]     |                    ^ help: consider using `_x` instead
Nov 16 15:27:18.332 INFO [stderr] 
Nov 16 15:27:18.333 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:18.333 INFO [stderr]    --> src/main.rs:449:28
Nov 16 15:27:18.333 INFO [stderr]     |
Nov 16 15:27:18.333 INFO [stderr] 449 |     fn move_cursor(x: i32, y: i32) { println!("move()"); }
Nov 16 15:27:18.333 INFO [stderr]     |                            ^ help: consider using `_y` instead
Nov 16 15:27:18.333 INFO [stderr] 
Nov 16 15:27:18.371 INFO [stderr] warning: variable does not need to be mutable
Nov 16 15:27:18.371 INFO [stderr]    --> src/main.rs:121:9
Nov 16 15:27:18.371 INFO [stderr]     |
Nov 16 15:27:18.371 INFO [stderr] 121 |     let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable
Nov 16 15:27:18.371 INFO [stderr]     |         ----^
Nov 16 15:27:18.371 INFO [stderr]     |         |
Nov 16 15:27:18.371 INFO [stderr]     |         help: remove this `mut`
Nov 16 15:27:18.371 INFO [stderr]     |
Nov 16 15:27:18.371 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 16 15:27:18.371 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: function is never used: `foo`
Nov 16 15:27:18.375 INFO [stderr]   --> src/main.rs:49:2
Nov 16 15:27:18.375 INFO [stderr]    |
Nov 16 15:27:18.375 INFO [stderr] 49 |     fn foo() {
Nov 16 15:27:18.375 INFO [stderr]    |     ^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr]    |
Nov 16 15:27:18.375 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: function is never used: `foo`
Nov 16 15:27:18.375 INFO [stderr]   --> src/main.rs:73:6
Nov 16 15:27:18.375 INFO [stderr]    |
Nov 16 15:27:18.375 INFO [stderr] 73 |     {fn foo(x: i32) -> i32 {
Nov 16 15:27:18.375 INFO [stderr]    |      ^^^^^^^^^^^^^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: function is never used: `foo`
Nov 16 15:27:18.375 INFO [stderr]   --> src/main.rs:81:6
Nov 16 15:27:18.375 INFO [stderr]    |
Nov 16 15:27:18.375 INFO [stderr] 81 |     {fn foo(x: i32) -> i32 {
Nov 16 15:27:18.375 INFO [stderr]    |      ^^^^^^^^^^^^^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: function is never used: `diverges`
Nov 16 15:27:18.375 INFO [stderr]   --> src/main.rs:85:5
Nov 16 15:27:18.375 INFO [stderr]    |
Nov 16 15:27:18.375 INFO [stderr] 85 |     fn diverges() -> ! {
Nov 16 15:27:18.375 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: variant is never constructed: `ChangeColor`
Nov 16 15:27:18.375 INFO [stderr]    --> src/main.rs:404:9
Nov 16 15:27:18.375 INFO [stderr]     |
Nov 16 15:27:18.375 INFO [stderr] 404 |         ChangeColor(i32, i32, i32),
Nov 16 15:27:18.375 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: variant is never constructed: `Move`
Nov 16 15:27:18.375 INFO [stderr]    --> src/main.rs:413:9
Nov 16 15:27:18.375 INFO [stderr]     |
Nov 16 15:27:18.375 INFO [stderr] 413 |         Move { squares: i32 },
Nov 16 15:27:18.375 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.375 INFO [stderr] warning: variable `linesEnum` should have a snake case name such as `lines_enum`
Nov 16 15:27:18.375 INFO [stderr]    --> src/main.rs:182:9
Nov 16 15:27:18.375 INFO [stderr]     |
Nov 16 15:27:18.375 INFO [stderr] 182 |     let linesEnum = lines.enumerate();
Nov 16 15:27:18.375 INFO [stderr]     |         ^^^^^^^^^
Nov 16 15:27:18.375 INFO [stderr]     |
Nov 16 15:27:18.375 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Nov 16 15:27:18.375 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: variable `charsEnum` should have a snake case name such as `chars_enum`
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:189:9
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 189 |     let charsEnum = "hello world".chars().enumerate();
Nov 16 15:27:18.376 INFO [stderr]     |         ^^^^^^^^^
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: variable `charNumber` should have a snake case name such as `char_number`
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:190:10
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 190 |     for (charNumber, charItem) in charsEnum {
Nov 16 15:27:18.376 INFO [stderr]     |          ^^^^^^^^^^
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: variable `charItem` should have a snake case name such as `char_item`
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:190:22
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 190 |     for (charNumber, charItem) in charsEnum {
Nov 16 15:27:18.376 INFO [stderr]     |                      ^^^^^^^^
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: function `MessageWriter` should have a snake case name such as `message_writer`
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:424:5
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 424 | /     fn MessageWriter(x: String) -> Message {
Nov 16 15:27:18.376 INFO [stderr] 425 | |         Message::Write(x)
Nov 16 15:27:18.376 INFO [stderr] 426 | |     }
Nov 16 15:27:18.376 INFO [stderr]     | |_____^
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: the `x:` in this pattern is redundant
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:455:27
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 455 |             Message::Move{x: x, y: y} => move_cursor(x,y),
Nov 16 15:27:18.376 INFO [stderr]     |                           --^^
Nov 16 15:27:18.376 INFO [stderr]     |                           |
Nov 16 15:27:18.376 INFO [stderr]     |                           help: remove this
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr]     = note: #[warn(non_shorthand_field_patterns)] on by default
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:18.376 INFO [stderr] warning: the `y:` in this pattern is redundant
Nov 16 15:27:18.376 INFO [stderr]    --> src/main.rs:455:33
Nov 16 15:27:18.376 INFO [stderr]     |
Nov 16 15:27:18.376 INFO [stderr] 455 |             Message::Move{x: x, y: y} => move_cursor(x,y),
Nov 16 15:27:18.376 INFO [stderr]     |                                 --^^
Nov 16 15:27:18.376 INFO [stderr]     |                                 |
Nov 16 15:27:18.376 INFO [stderr]     |                                 help: remove this
Nov 16 15:27:18.376 INFO [stderr] 
Nov 16 15:27:19.104 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
Nov 16 15:27:19.107 INFO [stderr] su: No module specific data is present
Nov 16 15:27:19.846 INFO running `"docker" "inspect" "e8638d452dd4fec78d6d7c6d3cc47c92c05535bb5961c78b180181724b9e4dde"`
Nov 16 15:27:20.108 INFO running `"docker" "rm" "-f" "e8638d452dd4fec78d6d7c6d3cc47c92c05535bb5961c78b180181724b9e4dde"`
Nov 16 15:27:20.407 INFO [stdout] e8638d452dd4fec78d6d7c6d3cc47c92c05535bb5961c78b180181724b9e4dde
Nov 16 15:27:20.410 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 15:27:20.912 INFO [stdout] 78bfb7c5c40587d3c28806d1c80bab659b962482dcc41d7a39a04593e4c9f277
Nov 16 15:27:20.916 INFO running `"docker" "start" "-a" "78bfb7c5c40587d3c28806d1c80bab659b962482dcc41d7a39a04593e4c9f277"`
Nov 16 15:27:21.909 INFO [stderr] usermod: no changes
Nov 16 15:27:22.015 INFO [stderr]    Compiling rust_book_exercises v0.1.0 (/source)
Nov 16 15:27:22.405 INFO [stderr] warning: unreachable expression
Nov 16 15:27:22.405 INFO [stderr]   --> src/main.rs:77:9
Nov 16 15:27:22.406 INFO [stderr]    |
Nov 16 15:27:22.406 INFO [stderr] 77 |         x + 1
Nov 16 15:27:22.406 INFO [stderr]    |         ^^^^^
Nov 16 15:27:22.406 INFO [stderr]    |
Nov 16 15:27:22.406 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Nov 16 15:27:22.406 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:4:6
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 4 |     let x = 5;
Nov 16 15:27:22.431 INFO [stderr]   |         ^ help: consider using `_x` instead
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:5:7
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:22.431 INFO [stderr]   |          ^ help: consider using `_x` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:5:10
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:22.431 INFO [stderr]   |             ^ help: consider using `_y` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `roneesh`
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:5:13
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 5 |     let (x, y, roneesh) = (1, 2, 3);
Nov 16 15:27:22.431 INFO [stderr]   |                ^^^^^^^ help: consider using `_roneesh` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `z`
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:7:6
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 7 |     let z : i32 = 5;
Nov 16 15:27:22.431 INFO [stderr]   |         ^ help: consider using `_z` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: variable `a` is assigned to, but never used
Nov 16 15:27:22.431 INFO [stderr]  --> src/main.rs:9:10
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr] 9 |     let mut a = 5;
Nov 16 15:27:22.431 INFO [stderr]   |             ^
Nov 16 15:27:22.431 INFO [stderr]   |
Nov 16 15:27:22.431 INFO [stderr]   = note: consider using `_a` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: value assigned to `a` is never read
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:10:2
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 10 |     a = 10;
Nov 16 15:27:22.431 INFO [stderr]    |     ^
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `b`
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:12:6
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 12 |     let b: i32;
Nov 16 15:27:22.431 INFO [stderr]    |         ^ help: consider using `_b` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: value assigned to `x` is never read
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:35:10
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 35 |     let mut x: i32 = 1;
Nov 16 15:27:22.431 INFO [stderr]    |             ^
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:37:6
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 37 |     let x = x;
Nov 16 15:27:22.431 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:39:6
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 39 |     let y = 4;
Nov 16 15:27:22.431 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 16 15:27:22.431 INFO [stderr] 
Nov 16 15:27:22.431 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.431 INFO [stderr]   --> src/main.rs:40:6
Nov 16 15:27:22.431 INFO [stderr]    |
Nov 16 15:27:22.431 INFO [stderr] 40 |     let y = "I can also be bound to text!"; 
Nov 16 15:27:22.432 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `f`
Nov 16 15:27:22.432 INFO [stderr]   --> src/main.rs:94:9
Nov 16 15:27:22.432 INFO [stderr]    |
Nov 16 15:27:22.432 INFO [stderr] 94 |     let f : fn(i32) -> i32;
Nov 16 15:27:22.432 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `f`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:100:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 100 |     let f: fn(i32) -> i32 = plus_one;
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_f` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `six`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:102:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 102 |     let six = f(5);
Nov 16 15:27:22.432 INFO [stderr]     |         ^^^ help: consider using `_six` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:111:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 111 |     let x = true;
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:117:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 117 |     let x = 42; // x has type of i32 now
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:118:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 118 |     let y = 1.0; // y has type of f64 now
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_y` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `a`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:120:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 120 |     let a = [1,2,3]; // array of types i32, 3 elements
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_a` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `m`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:121:13
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 121 |     let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable
Nov 16 15:27:22.432 INFO [stderr]     |             ^ help: consider using `_m` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `a`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:122:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 122 |     let a = [0; 20]; // arry of 20 i32 elements
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_a` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `tup`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:134:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 134 |     let tup = (1, "hello");
Nov 16 15:27:22.432 INFO [stderr]     |         ^^^ help: consider using `_tup` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `tup2`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:135:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 135 |     let tup2 : (i32, &str) = (1, "hello");
Nov 16 15:27:22.432 INFO [stderr]     |         ^^^^ help: consider using `_tup2` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:137:10
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 137 |     let (x,y,z) = (1, "hello", 3);
Nov 16 15:27:22.432 INFO [stderr]     |          ^ help: consider using `_x` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:137:12
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 137 |     let (x,y,z) = (1, "hello", 3);
Nov 16 15:27:22.432 INFO [stderr]     |            ^ help: consider using `_y` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.432 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.432 INFO [stderr]    --> src/main.rs:143:9
Nov 16 15:27:22.432 INFO [stderr]     |
Nov 16 15:27:22.432 INFO [stderr] 143 |     let y = tuppy.1;
Nov 16 15:27:22.432 INFO [stderr]     |         ^ help: consider using `_y` instead
Nov 16 15:27:22.432 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `z`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:144:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 144 |     let z = tuppy.2;
Nov 16 15:27:22.433 INFO [stderr]     |         ^ help: consider using `_z` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `v`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:218:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 218 |     let v = vec![1,2,3,4,5];// v: Vec<i32>
Nov 16 15:27:22.433 INFO [stderr]     |         ^ help: consider using `_v` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:256:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 256 |     let v2 = v; 
Nov 16 15:27:22.433 INFO [stderr]     |         ^^ help: consider using `_v2` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `c`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:269:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 269 |     let c : bool = flip(b);
Nov 16 15:27:22.433 INFO [stderr]     |         ^ help: consider using `_c` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `v1`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:287:10
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:22.433 INFO [stderr]     |          ^^ help: consider using `_v1` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:287:14
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:22.433 INFO [stderr]     |              ^^ help: consider using `_v2` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `answer`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:287:18
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 287 |     let (v1, v2, answer) = boo(v1, v2);
Nov 16 15:27:22.433 INFO [stderr]     |                  ^^^^^^ help: consider using `_answer` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `answer`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:308:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 308 |     let answer = noo(&v1, &v2);
Nov 16 15:27:22.433 INFO [stderr]     |         ^^^^^^ help: consider using `_answer` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `origin`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:377:13
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 377 |         let origin = Point(0,0,0);
Nov 16 15:27:22.433 INFO [stderr]     |             ^^^^^^ help: consider using `_origin` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `black`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:380:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 380 |     let black = Color(0,0,0);
Nov 16 15:27:22.433 INFO [stderr]     |         ^^^^^ help: consider using `_black` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `white`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:381:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 381 |     let white = Color(255,255,255);
Nov 16 15:27:22.433 INFO [stderr]     |         ^^^^^ help: consider using `_white` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `length`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:387:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 387 |     let length = Inches(10);
Nov 16 15:27:22.433 INFO [stderr]     |         ^^^^^^ help: consider using `_length` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:390:9
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 390 |     let x = Electron;
Nov 16 15:27:22.433 INFO [stderr]     |         ^ help: consider using `_x` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.433 INFO [stderr] warning: unused variable: `v1`
Nov 16 15:27:22.433 INFO [stderr]    --> src/main.rs:298:12
Nov 16 15:27:22.433 INFO [stderr]     |
Nov 16 15:27:22.433 INFO [stderr] 298 |     fn noo(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
Nov 16 15:27:22.433 INFO [stderr]     |            ^^ help: consider using `_v1` instead
Nov 16 15:27:22.433 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `v2`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:298:27
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 298 |     fn noo(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
Nov 16 15:27:22.434 INFO [stderr]     |                           ^^ help: consider using `_v2` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `r`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:448:21
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:22.434 INFO [stderr]     |                     ^ help: consider using `_r` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `g`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:448:29
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:22.434 INFO [stderr]     |                             ^ help: consider using `_g` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `b`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:448:37
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 448 |     fn change_color(r: i32, g: i32, b: i32) { println!("change_color()");}
Nov 16 15:27:22.434 INFO [stderr]     |                                     ^ help: consider using `_b` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `x`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:449:20
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 449 |     fn move_cursor(x: i32, y: i32) { println!("move()"); }
Nov 16 15:27:22.434 INFO [stderr]     |                    ^ help: consider using `_x` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.434 INFO [stderr] warning: unused variable: `y`
Nov 16 15:27:22.434 INFO [stderr]    --> src/main.rs:449:28
Nov 16 15:27:22.434 INFO [stderr]     |
Nov 16 15:27:22.434 INFO [stderr] 449 |     fn move_cursor(x: i32, y: i32) { println!("move()"); }
Nov 16 15:27:22.434 INFO [stderr]     |                            ^ help: consider using `_y` instead
Nov 16 15:27:22.434 INFO [stderr] 
Nov 16 15:27:22.471 INFO [stderr] warning: variable does not need to be mutable
Nov 16 15:27:22.471 INFO [stderr]    --> src/main.rs:121:9
Nov 16 15:27:22.471 INFO [stderr]     |
Nov 16 15:27:22.471 INFO [stderr] 121 |     let mut m = [1,2,3]; //array of types i32, 3 elements, but it is mutable
Nov 16 15:27:22.471 INFO [stderr]     |         ----^
Nov 16 15:27:22.471 INFO [stderr]     |         |
Nov 16 15:27:22.471 INFO [stderr]     |         help: remove this `mut`
Nov 16 15:27:22.471 INFO [stderr]     |
Nov 16 15:27:22.471 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 16 15:27:22.472 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: variable `linesEnum` should have a snake case name such as `lines_enum`
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:182:9
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 182 |     let linesEnum = lines.enumerate();
Nov 16 15:27:22.485 INFO [stderr]     |         ^^^^^^^^^
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: variable `charsEnum` should have a snake case name such as `chars_enum`
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:189:9
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 189 |     let charsEnum = "hello world".chars().enumerate();
Nov 16 15:27:22.485 INFO [stderr]     |         ^^^^^^^^^
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: variable `charNumber` should have a snake case name such as `char_number`
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:190:10
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 190 |     for (charNumber, charItem) in charsEnum {
Nov 16 15:27:22.485 INFO [stderr]     |          ^^^^^^^^^^
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: variable `charItem` should have a snake case name such as `char_item`
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:190:22
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 190 |     for (charNumber, charItem) in charsEnum {
Nov 16 15:27:22.485 INFO [stderr]     |                      ^^^^^^^^
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: function `MessageWriter` should have a snake case name such as `message_writer`
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:424:5
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 424 | /     fn MessageWriter(x: String) -> Message {
Nov 16 15:27:22.485 INFO [stderr] 425 | |         Message::Write(x)
Nov 16 15:27:22.485 INFO [stderr] 426 | |     }
Nov 16 15:27:22.485 INFO [stderr]     | |_____^
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: the `x:` in this pattern is redundant
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:455:27
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 455 |             Message::Move{x: x, y: y} => move_cursor(x,y),
Nov 16 15:27:22.485 INFO [stderr]     |                           --^^
Nov 16 15:27:22.485 INFO [stderr]     |                           |
Nov 16 15:27:22.485 INFO [stderr]     |                           help: remove this
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr]     = note: #[warn(non_shorthand_field_patterns)] on by default
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.485 INFO [stderr] warning: the `y:` in this pattern is redundant
Nov 16 15:27:22.485 INFO [stderr]    --> src/main.rs:455:33
Nov 16 15:27:22.485 INFO [stderr]     |
Nov 16 15:27:22.485 INFO [stderr] 455 |             Message::Move{x: x, y: y} => move_cursor(x,y),
Nov 16 15:27:22.485 INFO [stderr]     |                                 --^^
Nov 16 15:27:22.485 INFO [stderr]     |                                 |
Nov 16 15:27:22.485 INFO [stderr]     |                                 help: remove this
Nov 16 15:27:22.485 INFO [stderr] 
Nov 16 15:27:22.872 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
Nov 16 15:27:22.875 INFO [stderr] su: No module specific data is present
Nov 16 15:27:23.479 INFO running `"docker" "inspect" "78bfb7c5c40587d3c28806d1c80bab659b962482dcc41d7a39a04593e4c9f277"`
Nov 16 15:27:23.810 INFO running `"docker" "rm" "-f" "78bfb7c5c40587d3c28806d1c80bab659b962482dcc41d7a39a04593e4c9f277"`
Nov 16 15:27:24.106 INFO [stdout] 78bfb7c5c40587d3c28806d1c80bab659b962482dcc41d7a39a04593e4c9f277
Nov 16 15:27:24.109 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 15:27:24.667 INFO [stdout] 3f7f99da7bb078b4cbf1c3108b8bf774392092e38741c93838a27e674dfeedae
Nov 16 15:27:24.671 INFO running `"docker" "start" "-a" "3f7f99da7bb078b4cbf1c3108b8bf774392092e38741c93838a27e674dfeedae"`
Nov 16 15:27:26.024 INFO [stderr] usermod: no changes
Nov 16 15:27:26.071 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 16 15:27:26.083 INFO [stderr]      Running /target/debug/deps/rust_book_exercises-4a671c9e2a80df5e
Nov 16 15:27:26.084 INFO [stdout] 
Nov 16 15:27:26.084 INFO [stdout] running 0 tests
Nov 16 15:27:26.084 INFO [stdout] 
Nov 16 15:27:26.084 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 15:27:26.084 INFO [stdout] 
Nov 16 15:27:26.091 INFO [stderr] su: No module specific data is present
Nov 16 15:27:26.747 INFO running `"docker" "inspect" "3f7f99da7bb078b4cbf1c3108b8bf774392092e38741c93838a27e674dfeedae"`
Nov 16 15:27:27.051 INFO running `"docker" "rm" "-f" "3f7f99da7bb078b4cbf1c3108b8bf774392092e38741c93838a27e674dfeedae"`
Nov 16 15:27:27.427 INFO [stdout] 3f7f99da7bb078b4cbf1c3108b8bf774392092e38741c93838a27e674dfeedae