Dec 04 17:54:28.516 INFO checking guni973/learn_rust against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 17:54:28.517 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-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"`
Dec 04 17:54:28.971 INFO [stdout] 0fe6cbdb8d9f5a5c113b6517c56f56ec6b1de3e103d30f2ebc8d00a9bfe13780
Dec 04 17:54:28.973 INFO running `"docker" "start" "-a" "0fe6cbdb8d9f5a5c113b6517c56f56ec6b1de3e103d30f2ebc8d00a9bfe13780"`
Dec 04 17:54:30.854 INFO [stderr] usermod: no changes
Dec 04 17:54:30.967 INFO [stderr]     Checking hello_world v0.1.0 (/source)
Dec 04 17:54:31.687 INFO [stderr] warning: unreachable statement
Dec 04 17:54:31.687 INFO [stderr]    --> src/main.rs:102:5
Dec 04 17:54:31.687 INFO [stderr]     |
Dec 04 17:54:31.687 INFO [stderr] 102 |     let mut x = 5;
Dec 04 17:54:31.687 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 04 17:54:31.687 INFO [stderr]     |
Dec 04 17:54:31.687 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 04 17:54:31.687 INFO [stderr] 
Dec 04 17:54:31.687 INFO [stderr] warning: unreachable statement
Dec 04 17:54:31.687 INFO [stderr]    --> src/main.rs:102:5
Dec 04 17:54:31.687 INFO [stderr]     |
Dec 04 17:54:31.687 INFO [stderr] 102 |     let mut x = 5;
Dec 04 17:54:31.687 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 04 17:54:31.687 INFO [stderr]     |
Dec 04 17:54:31.687 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 04 17:54:31.687 INFO [stderr] 
Dec 04 17:54:31.711 INFO [stderr] warning: unused variable: `a`
Dec 04 17:54:31.711 INFO [stderr]  --> src/main.rs:6:9
Dec 04 17:54:31.712 INFO [stderr]   |
Dec 04 17:54:31.712 INFO [stderr] 6 |     let a = 5;
Dec 04 17:54:31.712 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 04 17:54:31.712 INFO [stderr]   |
Dec 04 17:54:31.713 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 17:54:31.713 INFO [stderr] 
Dec 04 17:54:31.713 INFO [stderr] warning: unused variable: `b`
Dec 04 17:54:31.714 INFO [stderr]  --> src/main.rs:8:9
Dec 04 17:54:31.714 INFO [stderr]   |
Dec 04 17:54:31.714 INFO [stderr] 8 |     let b: i32 = 5;
Dec 04 17:54:31.714 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 04 17:54:31.715 INFO [stderr] 
Dec 04 17:54:31.715 INFO [stderr] warning: unused variable: `c`
Dec 04 17:54:31.715 INFO [stderr]   --> src/main.rs:10:9
Dec 04 17:54:31.715 INFO [stderr]    |
Dec 04 17:54:31.716 INFO [stderr] 10 |     let c: u32 = 5;
Dec 04 17:54:31.716 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 04 17:54:31.716 INFO [stderr] 
Dec 04 17:54:31.717 INFO [stderr] warning: unused variable: `d`
Dec 04 17:54:31.717 INFO [stderr]   --> src/main.rs:12:13
Dec 04 17:54:31.717 INFO [stderr]    |
Dec 04 17:54:31.717 INFO [stderr] 12 |     let mut d = 5;
Dec 04 17:54:31.718 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 04 17:54:31.718 INFO [stderr] warning: unused variable: `a`
Dec 04 17:54:31.718 INFO [stderr]  --> src/main.rs:6:9
Dec 04 17:54:31.718 INFO [stderr]   |
Dec 04 17:54:31.719 INFO [stderr] 6 |     let a = 5;
Dec 04 17:54:31.719 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 04 17:54:31.719 INFO [stderr]   |
Dec 04 17:54:31.719 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 17:54:31.720 INFO [stderr] 
Dec 04 17:54:31.720 INFO [stderr] warning: unused variable: `b`
Dec 04 17:54:31.720 INFO [stderr]  --> src/main.rs:8:9
Dec 04 17:54:31.720 INFO [stderr]   |
Dec 04 17:54:31.721 INFO [stderr] 8 |     let b: i32 = 5;
Dec 04 17:54:31.721 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 04 17:54:31.721 INFO [stderr] 
Dec 04 17:54:31.721 INFO [stderr] warning: unused variable: `c`
Dec 04 17:54:31.722 INFO [stderr]   --> src/main.rs:10:9
Dec 04 17:54:31.722 INFO [stderr]    |
Dec 04 17:54:31.722 INFO [stderr] 10 |     let c: u32 = 5;
Dec 04 17:54:31.722 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 04 17:54:31.723 INFO [stderr] 
Dec 04 17:54:31.723 INFO [stderr] warning: unused variable: `d`
Dec 04 17:54:31.723 INFO [stderr]   --> src/main.rs:12:13
Dec 04 17:54:31.723 INFO [stderr]    |
Dec 04 17:54:31.724 INFO [stderr] 12 |     let mut d = 5;
Dec 04 17:54:31.724 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 04 17:54:31.724 INFO [stderr] 
Dec 04 17:54:31.724 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.724 INFO [stderr]   --> src/main.rs:19:10
Dec 04 17:54:31.725 INFO [stderr]    |
Dec 04 17:54:31.725 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 04 17:54:31.725 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 04 17:54:31.725 INFO [stderr] 
Dec 04 17:54:31.726 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.726 INFO [stderr]   --> src/main.rs:19:13
Dec 04 17:54:31.726 INFO [stderr]    |
Dec 04 17:54:31.726 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 04 17:54:31.727 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 04 17:54:31.727 INFO [stderr] 
Dec 04 17:54:31.727 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.727 INFO [stderr]   --> src/main.rs:38:9
Dec 04 17:54:31.728 INFO [stderr]    |
Dec 04 17:54:31.728 INFO [stderr] 38 |     let x = true;
Dec 04 17:54:31.728 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.728 INFO [stderr] 
Dec 04 17:54:31.728 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.729 INFO [stderr]   --> src/main.rs:39:9
Dec 04 17:54:31.729 INFO [stderr]    |
Dec 04 17:54:31.729 INFO [stderr] 39 |     let y: bool = false;
Dec 04 17:54:31.729 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.730 INFO [stderr] 
Dec 04 17:54:31.730 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.730 INFO [stderr]   --> src/main.rs:44:9
Dec 04 17:54:31.730 INFO [stderr]    |
Dec 04 17:54:31.731 INFO [stderr] 44 |     let x = 'x';
Dec 04 17:54:31.731 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.731 INFO [stderr] 
Dec 04 17:54:31.731 INFO [stderr] warning: unused variable: `two_hearts`
Dec 04 17:54:31.732 INFO [stderr]   --> src/main.rs:45:9
Dec 04 17:54:31.732 INFO [stderr]    |
Dec 04 17:54:31.732 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 04 17:54:31.732 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 04 17:54:31.732 INFO [stderr] 
Dec 04 17:54:31.732 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.732 INFO [stderr]   --> src/main.rs:48:9
Dec 04 17:54:31.732 INFO [stderr]    |
Dec 04 17:54:31.732 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 04 17:54:31.732 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.732 INFO [stderr] 
Dec 04 17:54:31.732 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.732 INFO [stderr]   --> src/main.rs:49:9
Dec 04 17:54:31.732 INFO [stderr]    |
Dec 04 17:54:31.732 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 04 17:54:31.732 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.732 INFO [stderr] 
Dec 04 17:54:31.732 INFO [stderr] warning: unused variable: `a`
Dec 04 17:54:31.732 INFO [stderr]   --> src/main.rs:52:9
Dec 04 17:54:31.732 INFO [stderr]    |
Dec 04 17:54:31.732 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 04 17:54:31.732 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 04 17:54:31.732 INFO [stderr] 
Dec 04 17:54:31.732 INFO [stderr] warning: unused variable: `m`
Dec 04 17:54:31.732 INFO [stderr]   --> src/main.rs:53:13
Dec 04 17:54:31.732 INFO [stderr]    |
Dec 04 17:54:31.732 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 04 17:54:31.732 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 04 17:54:31.732 INFO [stderr] 
Dec 04 17:54:31.732 INFO [stderr] warning: unused variable: `complete`
Dec 04 17:54:31.733 INFO [stderr]   --> src/main.rs:60:9
Dec 04 17:54:31.733 INFO [stderr]    |
Dec 04 17:54:31.733 INFO [stderr] 60 |     let complete = &a[..];
Dec 04 17:54:31.733 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 04 17:54:31.733 INFO [stderr] 
Dec 04 17:54:31.733 INFO [stderr] warning: unused variable: `middle`
Dec 04 17:54:31.733 INFO [stderr]   --> src/main.rs:62:9
Dec 04 17:54:31.733 INFO [stderr]    |
Dec 04 17:54:31.733 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 04 17:54:31.733 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 04 17:54:31.733 INFO [stderr] 
Dec 04 17:54:31.733 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.733 INFO [stderr]   --> src/main.rs:67:9
Dec 04 17:54:31.733 INFO [stderr]    |
Dec 04 17:54:31.733 INFO [stderr] 67 |     let x = (1, "hello");
Dec 04 17:54:31.733 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.733 INFO [stderr] 
Dec 04 17:54:31.733 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.733 INFO [stderr]   --> src/main.rs:68:9
Dec 04 17:54:31.733 INFO [stderr]    |
Dec 04 17:54:31.733 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 04 17:54:31.733 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.733 INFO [stderr] 
Dec 04 17:54:31.733 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 04 17:54:31.733 INFO [stderr]   --> src/main.rs:70:13
Dec 04 17:54:31.733 INFO [stderr]    |
Dec 04 17:54:31.733 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 04 17:54:31.733 INFO [stderr]    |             ^
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr]    = note: consider using `_x` instead
Dec 04 17:54:31.734 INFO [stderr] 
Dec 04 17:54:31.734 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 17:54:31.734 INFO [stderr]   --> src/main.rs:72:5
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr] 72 |     x = y;
Dec 04 17:54:31.734 INFO [stderr]    |     ^
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 17:54:31.734 INFO [stderr] 
Dec 04 17:54:31.734 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.734 INFO [stderr]   --> src/main.rs:74:10
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.734 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 04 17:54:31.734 INFO [stderr] 
Dec 04 17:54:31.734 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.734 INFO [stderr]   --> src/main.rs:74:13
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.734 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 04 17:54:31.734 INFO [stderr] 
Dec 04 17:54:31.734 INFO [stderr] warning: unused variable: `z`
Dec 04 17:54:31.734 INFO [stderr]   --> src/main.rs:74:16
Dec 04 17:54:31.734 INFO [stderr]    |
Dec 04 17:54:31.734 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.734 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 04 17:54:31.734 INFO [stderr] 
Dec 04 17:54:31.734 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.735 INFO [stderr]   --> src/main.rs:93:9
Dec 04 17:54:31.735 INFO [stderr]    |
Dec 04 17:54:31.735 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 04 17:54:31.735 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.735 INFO [stderr] 
Dec 04 17:54:31.735 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:54:31.735 INFO [stderr]   --> src/main.rs:12:9
Dec 04 17:54:31.735 INFO [stderr]    |
Dec 04 17:54:31.735 INFO [stderr] 12 |     let mut d = 5;
Dec 04 17:54:31.735 INFO [stderr]    |         ----^
Dec 04 17:54:31.735 INFO [stderr]    |         |
Dec 04 17:54:31.735 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:54:31.735 INFO [stderr]    |
Dec 04 17:54:31.735 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 17:54:31.735 INFO [stderr] 
Dec 04 17:54:31.735 INFO [stderr] 
Dec 04 17:54:31.736 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.736 INFO [stderr]   --> src/main.rs:19:10
Dec 04 17:54:31.736 INFO [stderr]    |
Dec 04 17:54:31.736 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 04 17:54:31.737 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 04 17:54:31.737 INFO [stderr] 
Dec 04 17:54:31.737 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.737 INFO [stderr]   --> src/main.rs:19:13
Dec 04 17:54:31.738 INFO [stderr]    |
Dec 04 17:54:31.738 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 04 17:54:31.738 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 04 17:54:31.738 INFO [stderr] 
Dec 04 17:54:31.739 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.739 INFO [stderr]   --> src/main.rs:38:9
Dec 04 17:54:31.739 INFO [stderr]    |
Dec 04 17:54:31.740 INFO [stderr] 38 |     let x = true;
Dec 04 17:54:31.740 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.740 INFO [stderr] 
Dec 04 17:54:31.741 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.741 INFO [stderr]   --> src/main.rs:39:9
Dec 04 17:54:31.741 INFO [stderr]    |
Dec 04 17:54:31.741 INFO [stderr] 39 |     let y: bool = false;
Dec 04 17:54:31.742 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.742 INFO [stderr] 
Dec 04 17:54:31.742 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.742 INFO [stderr]   --> src/main.rs:44:9
Dec 04 17:54:31.743 INFO [stderr]    |
Dec 04 17:54:31.743 INFO [stderr] 44 |     let x = 'x';
Dec 04 17:54:31.743 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.743 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:54:31.744 INFO [stderr]   --> src/main.rs:53:9
Dec 04 17:54:31.744 INFO [stderr]    |
Dec 04 17:54:31.744 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 04 17:54:31.744 INFO [stderr]    |         ----^
Dec 04 17:54:31.745 INFO [stderr]    |         |
Dec 04 17:54:31.745 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:54:31.745 INFO [stderr] 
Dec 04 17:54:31.745 INFO [stderr] 
Dec 04 17:54:31.746 INFO [stderr] warning: unused variable: `two_hearts`
Dec 04 17:54:31.746 INFO [stderr]   --> src/main.rs:45:9
Dec 04 17:54:31.746 INFO [stderr]    |
Dec 04 17:54:31.746 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 04 17:54:31.747 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 04 17:54:31.747 INFO [stderr] 
Dec 04 17:54:31.747 INFO [stderr] warning: function is never used: `declartion`
Dec 04 17:54:31.747 INFO [stderr]  --> src/main.rs:3:1
Dec 04 17:54:31.748 INFO [stderr]   |
Dec 04 17:54:31.748 INFO [stderr] 3 | fn declartion () {
Dec 04 17:54:31.748 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 04 17:54:31.748 INFO [stderr]   |
Dec 04 17:54:31.749 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 17:54:31.749 INFO [stderr] 
Dec 04 17:54:31.749 INFO [stderr] warning: function is never used: `print_number`
Dec 04 17:54:31.749 INFO [stderr]   --> src/main.rs:26:1
Dec 04 17:54:31.750 INFO [stderr]    |
Dec 04 17:54:31.750 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 04 17:54:31.750 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:54:31.750 INFO [stderr] 
Dec 04 17:54:31.751 INFO [stderr] warning: function is never used: `add_one`
Dec 04 17:54:31.751 INFO [stderr]   --> src/main.rs:31:1
Dec 04 17:54:31.751 INFO [stderr]    |
Dec 04 17:54:31.751 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 04 17:54:31.752 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:54:31.752 INFO [stderr] 
Dec 04 17:54:31.752 INFO [stderr] warning: function is never used: `primitive`
Dec 04 17:54:31.752 INFO [stderr]   --> src/main.rs:36:1
Dec 04 17:54:31.752 INFO [stderr]    |
Dec 04 17:54:31.752 INFO [stderr] 36 | fn primitive() {
Dec 04 17:54:31.752 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 04 17:54:31.752 INFO [stderr] 
Dec 04 17:54:31.752 INFO [stderr] warning: function is never used: `if_demo`
Dec 04 17:54:31.752 INFO [stderr]   --> src/main.rs:80:1
Dec 04 17:54:31.752 INFO [stderr]    |
Dec 04 17:54:31.752 INFO [stderr] 80 | fn if_demo() {
Dec 04 17:54:31.752 INFO [stderr]    | ^^^^^^^^^^^^
Dec 04 17:54:31.752 INFO [stderr] 
Dec 04 17:54:31.752 INFO [stderr] warning: function is never used: `loop_demo`
Dec 04 17:54:31.752 INFO [stderr]   --> src/main.rs:97:1
Dec 04 17:54:31.752 INFO [stderr]    |
Dec 04 17:54:31.752 INFO [stderr] 97 | fn loop_demo () {
Dec 04 17:54:31.752 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 17:54:31.752 INFO [stderr] 
Dec 04 17:54:31.753 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.753 INFO [stderr]   --> src/main.rs:48:9
Dec 04 17:54:31.753 INFO [stderr]    |
Dec 04 17:54:31.754 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 04 17:54:31.754 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.754 INFO [stderr] 
Dec 04 17:54:31.754 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.755 INFO [stderr]   --> src/main.rs:49:9
Dec 04 17:54:31.755 INFO [stderr]    |
Dec 04 17:54:31.755 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 04 17:54:31.755 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.756 INFO [stderr] 
Dec 04 17:54:31.756 INFO [stderr] warning: unused variable: `a`
Dec 04 17:54:31.756 INFO [stderr]   --> src/main.rs:52:9
Dec 04 17:54:31.757 INFO [stderr]    |
Dec 04 17:54:31.757 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 04 17:54:31.757 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 04 17:54:31.757 INFO [stderr] 
Dec 04 17:54:31.758 INFO [stderr] warning: unused variable: `m`
Dec 04 17:54:31.758 INFO [stderr]   --> src/main.rs:53:13
Dec 04 17:54:31.758 INFO [stderr]    |
Dec 04 17:54:31.758 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 04 17:54:31.759 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 04 17:54:31.759 INFO [stderr] 
Dec 04 17:54:31.759 INFO [stderr] warning: unused variable: `complete`
Dec 04 17:54:31.760 INFO [stderr]   --> src/main.rs:60:9
Dec 04 17:54:31.760 INFO [stderr]    |
Dec 04 17:54:31.760 INFO [stderr] 60 |     let complete = &a[..];
Dec 04 17:54:31.760 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 04 17:54:31.760 INFO [stderr] 
Dec 04 17:54:31.761 INFO [stderr] warning: unused variable: `middle`
Dec 04 17:54:31.761 INFO [stderr]   --> src/main.rs:62:9
Dec 04 17:54:31.761 INFO [stderr]    |
Dec 04 17:54:31.762 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 04 17:54:31.762 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 04 17:54:31.762 INFO [stderr] 
Dec 04 17:54:31.763 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.763 INFO [stderr]   --> src/main.rs:67:9
Dec 04 17:54:31.763 INFO [stderr]    |
Dec 04 17:54:31.763 INFO [stderr] 67 |     let x = (1, "hello");
Dec 04 17:54:31.764 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.764 INFO [stderr] 
Dec 04 17:54:31.764 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.765 INFO [stderr]   --> src/main.rs:68:9
Dec 04 17:54:31.765 INFO [stderr]    |
Dec 04 17:54:31.765 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 04 17:54:31.765 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 17:54:31.766 INFO [stderr] 
Dec 04 17:54:31.766 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 04 17:54:31.766 INFO [stderr]   --> src/main.rs:70:13
Dec 04 17:54:31.766 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 04 17:54:31.771 INFO [stderr]    |             ^
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr]    = note: consider using `_x` instead
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.771 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 17:54:31.771 INFO [stderr]   --> src/main.rs:72:5
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 72 |     x = y;
Dec 04 17:54:31.771 INFO [stderr]    |     ^
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.771 INFO [stderr] warning: unused variable: `x`
Dec 04 17:54:31.771 INFO [stderr]   --> src/main.rs:74:10
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.771 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.771 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.771 INFO [stderr]   --> src/main.rs:74:13
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.771 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.771 INFO [stderr] warning: unused variable: `z`
Dec 04 17:54:31.771 INFO [stderr]   --> src/main.rs:74:16
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 04 17:54:31.771 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.771 INFO [stderr] warning: unused variable: `y`
Dec 04 17:54:31.771 INFO [stderr]   --> src/main.rs:93:9
Dec 04 17:54:31.771 INFO [stderr]    |
Dec 04 17:54:31.771 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 04 17:54:31.771 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 17:54:31.771 INFO [stderr] 
Dec 04 17:54:31.775 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:54:31.775 INFO [stderr]   --> src/main.rs:12:9
Dec 04 17:54:31.775 INFO [stderr]    |
Dec 04 17:54:31.775 INFO [stderr] 12 |     let mut d = 5;
Dec 04 17:54:31.775 INFO [stderr]    |         ----^
Dec 04 17:54:31.775 INFO [stderr]    |         |
Dec 04 17:54:31.775 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:54:31.775 INFO [stderr]    |
Dec 04 17:54:31.775 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 17:54:31.775 INFO [stderr] 
Dec 04 17:54:31.787 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:54:31.787 INFO [stderr]   --> src/main.rs:53:9
Dec 04 17:54:31.787 INFO [stderr]    |
Dec 04 17:54:31.788 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 04 17:54:31.788 INFO [stderr]    |         ----^
Dec 04 17:54:31.788 INFO [stderr]    |         |
Dec 04 17:54:31.789 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:54:31.789 INFO [stderr] 
Dec 04 17:54:31.794 INFO [stderr] warning: function is never used: `declartion`
Dec 04 17:54:31.794 INFO [stderr]  --> src/main.rs:3:1
Dec 04 17:54:31.794 INFO [stderr]   |
Dec 04 17:54:31.795 INFO [stderr] 3 | fn declartion () {
Dec 04 17:54:31.795 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 04 17:54:31.798 INFO [stderr]   |
Dec 04 17:54:31.799 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 17:54:31.799 INFO [stderr] 
Dec 04 17:54:31.800 INFO [stderr] warning: function is never used: `print_number`
Dec 04 17:54:31.800 INFO [stderr]   --> src/main.rs:26:1
Dec 04 17:54:31.800 INFO [stderr]    |
Dec 04 17:54:31.801 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 04 17:54:31.801 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:54:31.801 INFO [stderr] 
Dec 04 17:54:31.802 INFO [stderr] warning: function is never used: `add_one`
Dec 04 17:54:31.802 INFO [stderr]   --> src/main.rs:31:1
Dec 04 17:54:31.802 INFO [stderr]    |
Dec 04 17:54:31.807 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 04 17:54:31.807 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:54:31.807 INFO [stderr] 
Dec 04 17:54:31.811 INFO [stderr] warning: function is never used: `primitive`
Dec 04 17:54:31.811 INFO [stderr]   --> src/main.rs:36:1
Dec 04 17:54:31.811 INFO [stderr]    |
Dec 04 17:54:31.811 INFO [stderr] 36 | fn primitive() {
Dec 04 17:54:31.811 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 04 17:54:31.811 INFO [stderr] 
Dec 04 17:54:31.811 INFO [stderr] warning: function is never used: `if_demo`
Dec 04 17:54:31.811 INFO [stderr]   --> src/main.rs:80:1
Dec 04 17:54:31.811 INFO [stderr]    |
Dec 04 17:54:31.811 INFO [stderr] 80 | fn if_demo() {
Dec 04 17:54:31.811 INFO [stderr]    | ^^^^^^^^^^^^
Dec 04 17:54:31.811 INFO [stderr] 
Dec 04 17:54:31.811 INFO [stderr] warning: function is never used: `loop_demo`
Dec 04 17:54:31.811 INFO [stderr]   --> src/main.rs:97:1
Dec 04 17:54:31.811 INFO [stderr]    |
Dec 04 17:54:31.811 INFO [stderr] 97 | fn loop_demo () {
Dec 04 17:54:31.811 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 17:54:31.811 INFO [stderr] 
Dec 04 17:54:31.848 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
Dec 04 17:54:31.850 INFO [stderr] su: No module specific data is present
Dec 04 17:54:32.514 INFO running `"docker" "inspect" "0fe6cbdb8d9f5a5c113b6517c56f56ec6b1de3e103d30f2ebc8d00a9bfe13780"`
Dec 04 17:54:32.694 INFO running `"docker" "rm" "-f" "0fe6cbdb8d9f5a5c113b6517c56f56ec6b1de3e103d30f2ebc8d00a9bfe13780"`
Dec 04 17:54:32.955 INFO [stdout] 0fe6cbdb8d9f5a5c113b6517c56f56ec6b1de3e103d30f2ebc8d00a9bfe13780