Dec 01 16:14:09.929 INFO testing guni973/learn_rust against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 01 16:14:09.929 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:14:10.404 INFO [stdout] 0e7f2f4bf271a626dcd45b3813717e9ccbdb8489901db981e21d49433deecc07
Dec 01 16:14:10.406 INFO running `"docker" "start" "-a" "0e7f2f4bf271a626dcd45b3813717e9ccbdb8489901db981e21d49433deecc07"`
Dec 01 16:14:11.875 INFO [stderr] usermod: no changes
Dec 01 16:14:11.950 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Dec 01 16:14:12.531 INFO [stderr] warning: unreachable statement
Dec 01 16:14:12.531 INFO [stderr]    --> src/main.rs:102:5
Dec 01 16:14:12.531 INFO [stderr]     |
Dec 01 16:14:12.531 INFO [stderr] 102 |     let mut x = 5;
Dec 01 16:14:12.531 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 01 16:14:12.531 INFO [stderr]     |
Dec 01 16:14:12.531 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 01 16:14:12.531 INFO [stderr] 
Dec 01 16:14:12.551 INFO [stderr] warning: unused variable: `a`
Dec 01 16:14:12.551 INFO [stderr]  --> src/main.rs:6:9
Dec 01 16:14:12.551 INFO [stderr]   |
Dec 01 16:14:12.551 INFO [stderr] 6 |     let a = 5;
Dec 01 16:14:12.551 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 01 16:14:12.551 INFO [stderr]   |
Dec 01 16:14:12.551 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:14:12.551 INFO [stderr] 
Dec 01 16:14:12.551 INFO [stderr] warning: unused variable: `b`
Dec 01 16:14:12.551 INFO [stderr]  --> src/main.rs:8:9
Dec 01 16:14:12.551 INFO [stderr]   |
Dec 01 16:14:12.551 INFO [stderr] 8 |     let b: i32 = 5;
Dec 01 16:14:12.551 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 01 16:14:12.551 INFO [stderr] 
Dec 01 16:14:12.551 INFO [stderr] warning: unused variable: `c`
Dec 01 16:14:12.551 INFO [stderr]   --> src/main.rs:10:9
Dec 01 16:14:12.551 INFO [stderr]    |
Dec 01 16:14:12.551 INFO [stderr] 10 |     let c: u32 = 5;
Dec 01 16:14:12.551 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 01 16:14:12.551 INFO [stderr] 
Dec 01 16:14:12.551 INFO [stderr] warning: unused variable: `d`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:12:13
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 12 |     let mut d = 5;
Dec 01 16:14:12.552 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:19:10
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 01 16:14:12.552 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:19:13
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 01 16:14:12.552 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:38:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 38 |     let x = true;
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:39:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 39 |     let y: bool = false;
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:44:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 44 |     let x = 'x';
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `two_hearts`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:45:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 01 16:14:12.552 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:48:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:49:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `a`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:52:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `m`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:53:13
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 01 16:14:12.552 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `complete`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:60:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 60 |     let complete = &a[..];
Dec 01 16:14:12.552 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `middle`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:62:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 01 16:14:12.552 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:67:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 67 |     let x = (1, "hello");
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:12.552 INFO [stderr] 
Dec 01 16:14:12.552 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.552 INFO [stderr]   --> src/main.rs:68:9
Dec 01 16:14:12.552 INFO [stderr]    |
Dec 01 16:14:12.552 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 01 16:14:12.552 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:70:13
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 01 16:14:12.553 INFO [stderr]    |             ^
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr]    = note: consider using `_x` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: value assigned to `x` is never read
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:72:5
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 72 |     x = y;
Dec 01 16:14:12.553 INFO [stderr]    |     ^
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:74:10
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:12.553 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:74:13
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:12.553 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: unused variable: `z`
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:74:16
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:12.553 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:93:9
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 01 16:14:12.553 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.553 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:14:12.553 INFO [stderr]   --> src/main.rs:12:9
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr] 12 |     let mut d = 5;
Dec 01 16:14:12.553 INFO [stderr]    |         ----^
Dec 01 16:14:12.553 INFO [stderr]    |         |
Dec 01 16:14:12.553 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:14:12.553 INFO [stderr]    |
Dec 01 16:14:12.553 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:14:12.553 INFO [stderr] 
Dec 01 16:14:12.562 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:14:12.562 INFO [stderr]   --> src/main.rs:53:9
Dec 01 16:14:12.562 INFO [stderr]    |
Dec 01 16:14:12.562 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 01 16:14:12.562 INFO [stderr]    |         ----^
Dec 01 16:14:12.562 INFO [stderr]    |         |
Dec 01 16:14:12.562 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:14:12.562 INFO [stderr] 
Dec 01 16:14:12.562 INFO [stderr] warning: function is never used: `declartion`
Dec 01 16:14:12.562 INFO [stderr]  --> src/main.rs:3:1
Dec 01 16:14:12.562 INFO [stderr]   |
Dec 01 16:14:12.562 INFO [stderr] 3 | fn declartion () {
Dec 01 16:14:12.562 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 01 16:14:12.562 INFO [stderr]   |
Dec 01 16:14:12.562 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 16:14:12.562 INFO [stderr] 
Dec 01 16:14:12.562 INFO [stderr] warning: function is never used: `print_number`
Dec 01 16:14:12.562 INFO [stderr]   --> src/main.rs:26:1
Dec 01 16:14:12.562 INFO [stderr]    |
Dec 01 16:14:12.562 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 01 16:14:12.562 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:14:12.562 INFO [stderr] 
Dec 01 16:14:12.562 INFO [stderr] warning: function is never used: `add_one`
Dec 01 16:14:12.563 INFO [stderr]   --> src/main.rs:31:1
Dec 01 16:14:12.563 INFO [stderr]    |
Dec 01 16:14:12.563 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 01 16:14:12.563 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:14:12.563 INFO [stderr] 
Dec 01 16:14:12.563 INFO [stderr] warning: function is never used: `primitive`
Dec 01 16:14:12.563 INFO [stderr]   --> src/main.rs:36:1
Dec 01 16:14:12.563 INFO [stderr]    |
Dec 01 16:14:12.563 INFO [stderr] 36 | fn primitive() {
Dec 01 16:14:12.563 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 01 16:14:12.563 INFO [stderr] 
Dec 01 16:14:12.563 INFO [stderr] warning: function is never used: `if_demo`
Dec 01 16:14:12.563 INFO [stderr]   --> src/main.rs:80:1
Dec 01 16:14:12.563 INFO [stderr]    |
Dec 01 16:14:12.563 INFO [stderr] 80 | fn if_demo() {
Dec 01 16:14:12.563 INFO [stderr]    | ^^^^^^^^^^^^
Dec 01 16:14:12.563 INFO [stderr] 
Dec 01 16:14:12.563 INFO [stderr] warning: function is never used: `loop_demo`
Dec 01 16:14:12.563 INFO [stderr]   --> src/main.rs:97:1
Dec 01 16:14:12.563 INFO [stderr]    |
Dec 01 16:14:12.563 INFO [stderr] 97 | fn loop_demo () {
Dec 01 16:14:12.563 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 01 16:14:12.563 INFO [stderr] 
Dec 01 16:14:13.136 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
Dec 01 16:14:13.147 INFO [stderr] su: No module specific data is present
Dec 01 16:14:14.002 INFO running `"docker" "inspect" "0e7f2f4bf271a626dcd45b3813717e9ccbdb8489901db981e21d49433deecc07"`
Dec 01 16:14:14.361 INFO running `"docker" "rm" "-f" "0e7f2f4bf271a626dcd45b3813717e9ccbdb8489901db981e21d49433deecc07"`
Dec 01 16:14:14.682 INFO [stdout] 0e7f2f4bf271a626dcd45b3813717e9ccbdb8489901db981e21d49433deecc07
Dec 01 16:14:14.689 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:14:15.239 INFO [stdout] 088742c5682638e37d029e7f25843be5b74e43d12fd6e06d651c66bed8e691cd
Dec 01 16:14:15.247 INFO running `"docker" "start" "-a" "088742c5682638e37d029e7f25843be5b74e43d12fd6e06d651c66bed8e691cd"`
Dec 01 16:14:16.162 INFO [stderr] usermod: no changes
Dec 01 16:14:16.215 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Dec 01 16:14:16.635 INFO [stderr] warning: unreachable statement
Dec 01 16:14:16.635 INFO [stderr]    --> src/main.rs:102:5
Dec 01 16:14:16.635 INFO [stderr]     |
Dec 01 16:14:16.635 INFO [stderr] 102 |     let mut x = 5;
Dec 01 16:14:16.635 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 01 16:14:16.635 INFO [stderr]     |
Dec 01 16:14:16.635 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 01 16:14:16.635 INFO [stderr] 
Dec 01 16:14:16.651 INFO [stderr] warning: unused variable: `a`
Dec 01 16:14:16.651 INFO [stderr]  --> src/main.rs:6:9
Dec 01 16:14:16.651 INFO [stderr]   |
Dec 01 16:14:16.651 INFO [stderr] 6 |     let a = 5;
Dec 01 16:14:16.651 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 01 16:14:16.651 INFO [stderr]   |
Dec 01 16:14:16.651 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:14:16.651 INFO [stderr] 
Dec 01 16:14:16.659 INFO [stderr] warning: unused variable: `b`
Dec 01 16:14:16.659 INFO [stderr]  --> src/main.rs:8:9
Dec 01 16:14:16.659 INFO [stderr]   |
Dec 01 16:14:16.659 INFO [stderr] 8 |     let b: i32 = 5;
Dec 01 16:14:16.659 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 01 16:14:16.659 INFO [stderr] 
Dec 01 16:14:16.659 INFO [stderr] warning: unused variable: `c`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:10:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 10 |     let c: u32 = 5;
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_c` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `d`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:12:13
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 12 |     let mut d = 5;
Dec 01 16:14:16.660 INFO [stderr]    |             ^ help: consider using `_d` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:19:10
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 01 16:14:16.660 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:19:13
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 19 |     let (x, y) = (1, 2);
Dec 01 16:14:16.660 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:38:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 38 |     let x = true;
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:39:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 39 |     let y: bool = false;
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:44:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 44 |     let x = 'x';
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `two_hearts`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:45:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 45 |     let two_hearts = '¶';
Dec 01 16:14:16.660 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:48:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:49:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `a`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:52:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_a` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `m`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:53:13
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 01 16:14:16.660 INFO [stderr]    |             ^ help: consider using `_m` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `complete`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:60:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 60 |     let complete = &a[..];
Dec 01 16:14:16.660 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `middle`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:62:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 62 |     let middle = &a[1..4];
Dec 01 16:14:16.660 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.660 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.660 INFO [stderr]   --> src/main.rs:67:9
Dec 01 16:14:16.660 INFO [stderr]    |
Dec 01 16:14:16.660 INFO [stderr] 67 |     let x = (1, "hello");
Dec 01 16:14:16.660 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:16.660 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:68:9
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Dec 01 16:14:16.661 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: variable `x` is assigned to, but never used
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:70:13
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 70 |     let mut x = (1, 2);
Dec 01 16:14:16.661 INFO [stderr]    |             ^
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr]    = note: consider using `_x` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: value assigned to `x` is never read
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:72:5
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 72 |     x = y;
Dec 01 16:14:16.661 INFO [stderr]    |     ^
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: unused variable: `x`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:74:10
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:16.661 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:74:13
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:16.661 INFO [stderr]    |             ^ help: consider using `_y` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: unused variable: `z`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:74:16
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Dec 01 16:14:16.661 INFO [stderr]    |                ^ help: consider using `_z` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: unused variable: `y`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:93:9
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Dec 01 16:14:16.661 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:12:9
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 12 |     let mut d = 5;
Dec 01 16:14:16.661 INFO [stderr]    |         ----^
Dec 01 16:14:16.661 INFO [stderr]    |         |
Dec 01 16:14:16.661 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:53:9
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Dec 01 16:14:16.661 INFO [stderr]    |         ----^
Dec 01 16:14:16.661 INFO [stderr]    |         |
Dec 01 16:14:16.661 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: function is never used: `declartion`
Dec 01 16:14:16.661 INFO [stderr]  --> src/main.rs:3:1
Dec 01 16:14:16.661 INFO [stderr]   |
Dec 01 16:14:16.661 INFO [stderr] 3 | fn declartion () {
Dec 01 16:14:16.661 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 01 16:14:16.661 INFO [stderr]   |
Dec 01 16:14:16.661 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: function is never used: `print_number`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:26:1
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 26 | fn print_number(x: i32) {
Dec 01 16:14:16.661 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: function is never used: `add_one`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:31:1
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Dec 01 16:14:16.661 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: function is never used: `primitive`
Dec 01 16:14:16.661 INFO [stderr]   --> src/main.rs:36:1
Dec 01 16:14:16.661 INFO [stderr]    |
Dec 01 16:14:16.661 INFO [stderr] 36 | fn primitive() {
Dec 01 16:14:16.661 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 01 16:14:16.661 INFO [stderr] 
Dec 01 16:14:16.661 INFO [stderr] warning: function is never used: `if_demo`
Dec 01 16:14:16.662 INFO [stderr]   --> src/main.rs:80:1
Dec 01 16:14:16.662 INFO [stderr]    |
Dec 01 16:14:16.662 INFO [stderr] 80 | fn if_demo() {
Dec 01 16:14:16.662 INFO [stderr]    | ^^^^^^^^^^^^
Dec 01 16:14:16.662 INFO [stderr] 
Dec 01 16:14:16.662 INFO [stderr] warning: function is never used: `loop_demo`
Dec 01 16:14:16.662 INFO [stderr]   --> src/main.rs:97:1
Dec 01 16:14:16.662 INFO [stderr]    |
Dec 01 16:14:16.662 INFO [stderr] 97 | fn loop_demo () {
Dec 01 16:14:16.662 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 01 16:14:16.662 INFO [stderr] 
Dec 01 16:14:17.122 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
Dec 01 16:14:17.130 INFO [stderr] su: No module specific data is present
Dec 01 16:14:17.560 INFO running `"docker" "inspect" "088742c5682638e37d029e7f25843be5b74e43d12fd6e06d651c66bed8e691cd"`
Dec 01 16:14:17.733 INFO running `"docker" "rm" "-f" "088742c5682638e37d029e7f25843be5b74e43d12fd6e06d651c66bed8e691cd"`
Dec 01 16:14:17.864 INFO [stdout] 088742c5682638e37d029e7f25843be5b74e43d12fd6e06d651c66bed8e691cd
Dec 01 16:14:17.868 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:14:18.196 INFO [stdout] 3bbfa75254f8ae356e980fee681d9ce80788de5029ad9371737cb785cafb71e0
Dec 01 16:14:18.198 INFO running `"docker" "start" "-a" "3bbfa75254f8ae356e980fee681d9ce80788de5029ad9371737cb785cafb71e0"`
Dec 01 16:14:19.006 INFO [stderr] usermod: no changes
Dec 01 16:14:19.051 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 01 16:14:19.051 INFO [stderr]      Running /target/debug/deps/hello_world-034260ceeb4c71ba
Dec 01 16:14:19.057 INFO [stdout] 
Dec 01 16:14:19.057 INFO [stdout] running 0 tests
Dec 01 16:14:19.057 INFO [stdout] 
Dec 01 16:14:19.057 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 16:14:19.057 INFO [stdout] 
Dec 01 16:14:19.059 INFO [stderr] su: No module specific data is present
Dec 01 16:14:19.306 INFO running `"docker" "inspect" "3bbfa75254f8ae356e980fee681d9ce80788de5029ad9371737cb785cafb71e0"`
Dec 01 16:14:19.372 INFO running `"docker" "rm" "-f" "3bbfa75254f8ae356e980fee681d9ce80788de5029ad9371737cb785cafb71e0"`
Dec 01 16:14:19.520 INFO [stdout] 3bbfa75254f8ae356e980fee681d9ce80788de5029ad9371737cb785cafb71e0
