Dec 17 23:29:56.923 INFO checking guni973/learn_rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 23:29:56.924 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/guni973/learn_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 23:29:57.229 INFO [stdout] 1518e1116f71667cd0d3246d0b30714913e1c9b41cb1989327a97ab58ae5e4a4
Dec 17 23:29:57.231 INFO running `"docker" "start" "-a" "1518e1116f71667cd0d3246d0b30714913e1c9b41cb1989327a97ab58ae5e4a4"`
Dec 17 23:29:58.408 INFO [stderr]     Checking hello_world v0.1.0 (/opt/crater/workdir)
Dec 17 23:29:58.639 INFO [stderr] warning: unreachable statement
Dec 17 23:29:58.639 INFO [stderr]    --> src/main.rs:102:5
Dec 17 23:29:58.639 INFO [stderr]     |
Dec 17 23:29:58.639 INFO [stderr] 102 |     let mut x = 5;
Dec 17 23:29:58.639 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 17 23:29:58.639 INFO [stderr]     |
Dec 17 23:29:58.639 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 23:29:58.639 INFO [stderr] 
Dec 17 23:29:58.655 INFO [stderr] warning: unused variable: `a`
Dec 17 23:29:58.655 INFO [stderr]  --> src/main.rs:6:9
Dec 17 23:29:58.655 INFO [stderr]   |
Dec 17 23:29:58.655 INFO [stderr] 6 |     let a = 5;
Dec 17 23:29:58.655 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 17 23:29:58.655 INFO [stderr]   |
Dec 17 23:29:58.656 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.656 INFO [stderr] warning: unused variable: `b`
Dec 17 23:29:58.656 INFO [stderr]  --> src/main.rs:8:9
Dec 17 23:29:58.656 INFO [stderr]   |
Dec 17 23:29:58.656 INFO [stderr] 8 |     let b: i32 = 5;
Dec 17 23:29:58.656 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.656 INFO [stderr] warning: unused variable: `c`
Dec 17 23:29:58.656 INFO [stderr]   --> src/main.rs:10:9
Dec 17 23:29:58.656 INFO [stderr]    |
Dec 17 23:29:58.656 INFO [stderr] 10 |     let c: u32 = 5;
Dec 17 23:29:58.656 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.656 INFO [stderr] warning: unused variable: `d`
Dec 17 23:29:58.656 INFO [stderr]   --> src/main.rs:12:13
Dec 17 23:29:58.656 INFO [stderr]    |
Dec 17 23:29:58.656 INFO [stderr] 12 |     let mut d = 5;
Dec 17 23:29:58.656 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.656 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.656 INFO [stderr]   --> src/main.rs:19:10
Dec 17 23:29:58.656 INFO [stderr]    |
Dec 17 23:29:58.656 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 17 23:29:58.656 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.656 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.656 INFO [stderr]   --> src/main.rs:19:13
Dec 17 23:29:58.656 INFO [stderr]    |
Dec 17 23:29:58.656 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 17 23:29:58.656 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 17 23:29:58.656 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:38:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 38 |     let x = true;
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:39:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 39 |     let y: bool = false;
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:44:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 44 |     let x = 'x';
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `two_hearts`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:45:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 17 23:29:58.657 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:48:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:49:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `a`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:52:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 17 23:29:58.657 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `m`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:53:13
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 17 23:29:58.657 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 17 23:29:58.657 INFO [stderr] 
Dec 17 23:29:58.657 INFO [stderr] warning: unused variable: `complete`
Dec 17 23:29:58.657 INFO [stderr]   --> src/main.rs:60:9
Dec 17 23:29:58.657 INFO [stderr]    |
Dec 17 23:29:58.657 INFO [stderr] 60 |     let complete = &a[..];
Dec 17 23:29:58.657 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 17 23:29:58.658 INFO [stderr] 
Dec 17 23:29:58.658 INFO [stderr] warning: unused variable: `middle`
Dec 17 23:29:58.658 INFO [stderr]   --> src/main.rs:62:9
Dec 17 23:29:58.658 INFO [stderr]    |
Dec 17 23:29:58.658 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 17 23:29:58.658 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 17 23:29:58.658 INFO [stderr] 
Dec 17 23:29:58.658 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.658 INFO [stderr]   --> src/main.rs:67:9
Dec 17 23:29:58.658 INFO [stderr]    |
Dec 17 23:29:58.658 INFO [stderr] 67 |     let x = (1, "hello");
Dec 17 23:29:58.658 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.658 INFO [stderr] 
Dec 17 23:29:58.658 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.658 INFO [stderr]   --> src/main.rs:68:9
Dec 17 23:29:58.658 INFO [stderr]    |
Dec 17 23:29:58.658 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 17 23:29:58.658 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.658 INFO [stderr] 
Dec 17 23:29:58.658 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 17 23:29:58.658 INFO [stderr]   --> src/main.rs:70:13
Dec 17 23:29:58.658 INFO [stderr]    |
Dec 17 23:29:58.658 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 17 23:29:58.658 INFO [stderr]    |             ^
Dec 17 23:29:58.658 INFO [stderr]    |
Dec 17 23:29:58.658 INFO [stderr]    = note: consider using `_x` instead
Dec 17 23:29:58.659 INFO [stderr] 
Dec 17 23:29:58.659 INFO [stderr] warning: value assigned to `x` is never read
Dec 17 23:29:58.659 INFO [stderr]   --> src/main.rs:72:5
Dec 17 23:29:58.659 INFO [stderr]    |
Dec 17 23:29:58.659 INFO [stderr] 72 |     x = y;
Dec 17 23:29:58.659 INFO [stderr]    |     ^
Dec 17 23:29:58.659 INFO [stderr]    |
Dec 17 23:29:58.659 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 23:29:58.659 INFO [stderr] 
Dec 17 23:29:58.659 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.659 INFO [stderr]   --> src/main.rs:74:10
Dec 17 23:29:58.659 INFO [stderr]    |
Dec 17 23:29:58.659 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.659 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 23:29:58.659 INFO [stderr] 
Dec 17 23:29:58.659 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.659 INFO [stderr]   --> src/main.rs:74:13
Dec 17 23:29:58.659 INFO [stderr]    |
Dec 17 23:29:58.659 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.659 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 17 23:29:58.659 INFO [stderr] 
Dec 17 23:29:58.659 INFO [stderr] warning: unused variable: `z`
Dec 17 23:29:58.659 INFO [stderr]   --> src/main.rs:74:16
Dec 17 23:29:58.659 INFO [stderr]    |
Dec 17 23:29:58.659 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.659 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 17 23:29:58.659 INFO [stderr] 
Dec 17 23:29:58.660 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.660 INFO [stderr]   --> src/main.rs:93:9
Dec 17 23:29:58.660 INFO [stderr]    |
Dec 17 23:29:58.660 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 17 23:29:58.660 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.660 INFO [stderr] 
Dec 17 23:29:58.661 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:29:58.661 INFO [stderr]   --> src/main.rs:12:9
Dec 17 23:29:58.661 INFO [stderr]    |
Dec 17 23:29:58.661 INFO [stderr] 12 |     let mut d = 5;
Dec 17 23:29:58.661 INFO [stderr]    |         ----^
Dec 17 23:29:58.661 INFO [stderr]    |         |
Dec 17 23:29:58.661 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:29:58.661 INFO [stderr]    |
Dec 17 23:29:58.661 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:29:58.661 INFO [stderr] 
Dec 17 23:29:58.665 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:29:58.665 INFO [stderr]   --> src/main.rs:53:9
Dec 17 23:29:58.665 INFO [stderr]    |
Dec 17 23:29:58.665 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 17 23:29:58.665 INFO [stderr]    |         ----^
Dec 17 23:29:58.665 INFO [stderr]    |         |
Dec 17 23:29:58.665 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:29:58.665 INFO [stderr] 
Dec 17 23:29:58.670 INFO [stderr] warning: function is never used: `declartion`
Dec 17 23:29:58.670 INFO [stderr]  --> src/main.rs:3:1
Dec 17 23:29:58.670 INFO [stderr]   |
Dec 17 23:29:58.671 INFO [stderr] 3 | fn declartion () {
Dec 17 23:29:58.671 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr]   |
Dec 17 23:29:58.671 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.671 INFO [stderr] warning: function is never used: `print_number`
Dec 17 23:29:58.671 INFO [stderr]   --> src/main.rs:26:1
Dec 17 23:29:58.671 INFO [stderr]    |
Dec 17 23:29:58.671 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 17 23:29:58.671 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.671 INFO [stderr] warning: function is never used: `add_one`
Dec 17 23:29:58.671 INFO [stderr]   --> src/main.rs:31:1
Dec 17 23:29:58.671 INFO [stderr]    |
Dec 17 23:29:58.671 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 17 23:29:58.671 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.671 INFO [stderr] warning: function is never used: `primitive`
Dec 17 23:29:58.671 INFO [stderr]   --> src/main.rs:36:1
Dec 17 23:29:58.671 INFO [stderr]    |
Dec 17 23:29:58.671 INFO [stderr] 36 | fn primitive() {
Dec 17 23:29:58.671 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.671 INFO [stderr] warning: function is never used: `if_demo`
Dec 17 23:29:58.671 INFO [stderr]   --> src/main.rs:80:1
Dec 17 23:29:58.671 INFO [stderr]    |
Dec 17 23:29:58.671 INFO [stderr] 80 | fn if_demo() {
Dec 17 23:29:58.671 INFO [stderr]    | ^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.671 INFO [stderr] warning: function is never used: `loop_demo`
Dec 17 23:29:58.671 INFO [stderr]   --> src/main.rs:97:1
Dec 17 23:29:58.671 INFO [stderr]    |
Dec 17 23:29:58.671 INFO [stderr] 97 | fn loop_demo () {
Dec 17 23:29:58.671 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 17 23:29:58.671 INFO [stderr] 
Dec 17 23:29:58.845 INFO [stderr] warning: unreachable statement
Dec 17 23:29:58.845 INFO [stderr]    --> src/main.rs:102:5
Dec 17 23:29:58.845 INFO [stderr]     |
Dec 17 23:29:58.845 INFO [stderr] 102 |     let mut x = 5;
Dec 17 23:29:58.845 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 17 23:29:58.845 INFO [stderr]     |
Dec 17 23:29:58.845 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 23:29:58.845 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `a`
Dec 17 23:29:58.864 INFO [stderr]  --> src/main.rs:6:9
Dec 17 23:29:58.864 INFO [stderr]   |
Dec 17 23:29:58.864 INFO [stderr] 6 |     let a = 5;
Dec 17 23:29:58.864 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 17 23:29:58.864 INFO [stderr]   |
Dec 17 23:29:58.864 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `b`
Dec 17 23:29:58.864 INFO [stderr]  --> src/main.rs:8:9
Dec 17 23:29:58.864 INFO [stderr]   |
Dec 17 23:29:58.864 INFO [stderr] 8 |     let b: i32 = 5;
Dec 17 23:29:58.864 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `c`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:10:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 10 |     let c: u32 = 5;
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `d`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:12:13
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 12 |     let mut d = 5;
Dec 17 23:29:58.864 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:19:10
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 17 23:29:58.864 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:19:13
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 17 23:29:58.864 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:38:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 38 |     let x = true;
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:39:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 39 |     let y: bool = false;
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:44:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 44 |     let x = 'x';
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `two_hearts`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:45:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 17 23:29:58.864 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:48:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:49:9
Dec 17 23:29:58.864 INFO [stderr]    |
Dec 17 23:29:58.864 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 17 23:29:58.864 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.864 INFO [stderr] 
Dec 17 23:29:58.864 INFO [stderr] warning: unused variable: `a`
Dec 17 23:29:58.864 INFO [stderr]   --> src/main.rs:52:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 17 23:29:58.865 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `m`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:53:13
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 17 23:29:58.865 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `complete`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:60:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 60 |     let complete = &a[..];
Dec 17 23:29:58.865 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `middle`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:62:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 17 23:29:58.865 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:67:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 67 |     let x = (1, "hello");
Dec 17 23:29:58.865 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:68:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 17 23:29:58.865 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:70:13
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 17 23:29:58.865 INFO [stderr]    |             ^
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr]    = note: consider using `_x` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: value assigned to `x` is never read
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:72:5
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 72 |     x = y;
Dec 17 23:29:58.865 INFO [stderr]    |     ^
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `x`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:74:10
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.865 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:74:13
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.865 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `z`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:74:16
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 17 23:29:58.865 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: unused variable: `y`
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:93:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 17 23:29:58.865 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.865 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:29:58.865 INFO [stderr]   --> src/main.rs:12:9
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr] 12 |     let mut d = 5;
Dec 17 23:29:58.865 INFO [stderr]    |         ----^
Dec 17 23:29:58.865 INFO [stderr]    |         |
Dec 17 23:29:58.865 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:29:58.865 INFO [stderr]    |
Dec 17 23:29:58.865 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:29:58.865 INFO [stderr] 
Dec 17 23:29:58.867 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:29:58.867 INFO [stderr]   --> src/main.rs:53:9
Dec 17 23:29:58.867 INFO [stderr]    |
Dec 17 23:29:58.867 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 17 23:29:58.867 INFO [stderr]    |         ----^
Dec 17 23:29:58.872 INFO [stderr]    |         |
Dec 17 23:29:58.872 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:29:58.872 INFO [stderr] 
Dec 17 23:29:58.872 INFO [stderr] warning: function is never used: `declartion`
Dec 17 23:29:58.872 INFO [stderr]  --> src/main.rs:3:1
Dec 17 23:29:58.872 INFO [stderr]   |
Dec 17 23:29:58.872 INFO [stderr] 3 | fn declartion () {
Dec 17 23:29:58.872 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 17 23:29:58.872 INFO [stderr]   |
Dec 17 23:29:58.872 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 23:29:58.872 INFO [stderr] 
Dec 17 23:29:58.872 INFO [stderr] warning: function is never used: `print_number`
Dec 17 23:29:58.872 INFO [stderr]   --> src/main.rs:26:1
Dec 17 23:29:58.872 INFO [stderr]    |
Dec 17 23:29:58.872 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 17 23:29:58.872 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:29:58.872 INFO [stderr] 
Dec 17 23:29:58.872 INFO [stderr] warning: function is never used: `add_one`
Dec 17 23:29:58.872 INFO [stderr]   --> src/main.rs:31:1
Dec 17 23:29:58.872 INFO [stderr]    |
Dec 17 23:29:58.872 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 17 23:29:58.872 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:29:58.872 INFO [stderr] 
Dec 17 23:29:58.872 INFO [stderr] warning: function is never used: `primitive`
Dec 17 23:29:58.872 INFO [stderr]   --> src/main.rs:36:1
Dec 17 23:29:58.872 INFO [stderr]    |
Dec 17 23:29:58.872 INFO [stderr] 36 | fn primitive() {
Dec 17 23:29:58.876 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 17 23:29:58.876 INFO [stderr] 
Dec 17 23:29:58.876 INFO [stderr] warning: function is never used: `if_demo`
Dec 17 23:29:58.876 INFO [stderr]   --> src/main.rs:80:1
Dec 17 23:29:58.876 INFO [stderr]    |
Dec 17 23:29:58.876 INFO [stderr] 80 | fn if_demo() {
Dec 17 23:29:58.876 INFO [stderr]    | ^^^^^^^^^^^^
Dec 17 23:29:58.876 INFO [stderr] 
Dec 17 23:29:58.876 INFO [stderr] warning: function is never used: `loop_demo`
Dec 17 23:29:58.876 INFO [stderr]   --> src/main.rs:97:1
Dec 17 23:29:58.876 INFO [stderr]    |
Dec 17 23:29:58.876 INFO [stderr] 97 | fn loop_demo () {
Dec 17 23:29:58.876 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 17 23:29:58.876 INFO [stderr] 
Dec 17 23:29:58.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 17 23:29:59.232 INFO running `"docker" "inspect" "1518e1116f71667cd0d3246d0b30714913e1c9b41cb1989327a97ab58ae5e4a4"`
Dec 17 23:29:59.454 INFO running `"docker" "rm" "-f" "1518e1116f71667cd0d3246d0b30714913e1c9b41cb1989327a97ab58ae5e4a4"`
Dec 17 23:29:59.660 INFO [stdout] 1518e1116f71667cd0d3246d0b30714913e1c9b41cb1989327a97ab58ae5e4a4