Nov 17 01:42:50.480 INFO testing guni973/learn_rust against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 01:42:50.481 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:42:50.784 INFO [stdout] dae8806fe5fc37a68078d6915dee4b6283c47bf5b93521977fd1b6d634780593
Nov 17 01:42:50.791 INFO running `"docker" "start" "-a" "dae8806fe5fc37a68078d6915dee4b6283c47bf5b93521977fd1b6d634780593"`
Nov 17 01:42:51.831 INFO [stderr] usermod: no changes
Nov 17 01:42:51.900 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Nov 17 01:42:52.347 INFO [stderr] warning: unreachable statement
Nov 17 01:42:52.347 INFO [stderr]    --> src/main.rs:102:5
Nov 17 01:42:52.347 INFO [stderr]     |
Nov 17 01:42:52.347 INFO [stderr] 102 |     let mut x = 5;
Nov 17 01:42:52.347 INFO [stderr]     |     ^^^^^^^^^^^^^^
Nov 17 01:42:52.347 INFO [stderr]     |
Nov 17 01:42:52.347 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Nov 17 01:42:52.347 INFO [stderr] 
Nov 17 01:42:52.359 INFO [stderr] warning: unused variable: `a`
Nov 17 01:42:52.359 INFO [stderr]  --> src/main.rs:6:9
Nov 17 01:42:52.359 INFO [stderr]   |
Nov 17 01:42:52.359 INFO [stderr] 6 |     let a = 5;
Nov 17 01:42:52.359 INFO [stderr]   |         ^ help: consider using `_a` instead
Nov 17 01:42:52.360 INFO [stderr]   |
Nov 17 01:42:52.360 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 01:42:52.360 INFO [stderr] 
Nov 17 01:42:52.360 INFO [stderr] warning: unused variable: `b`
Nov 17 01:42:52.360 INFO [stderr]  --> src/main.rs:8:9
Nov 17 01:42:52.360 INFO [stderr]   |
Nov 17 01:42:52.360 INFO [stderr] 8 |     let b: i32 = 5;
Nov 17 01:42:52.360 INFO [stderr]   |         ^ help: consider using `_b` instead
Nov 17 01:42:52.360 INFO [stderr] 
Nov 17 01:42:52.360 INFO [stderr] warning: unused variable: `c`
Nov 17 01:42:52.360 INFO [stderr]   --> src/main.rs:10:9
Nov 17 01:42:52.360 INFO [stderr]    |
Nov 17 01:42:52.360 INFO [stderr] 10 |     let c: u32 = 5;
Nov 17 01:42:52.360 INFO [stderr]    |         ^ help: consider using `_c` instead
Nov 17 01:42:52.360 INFO [stderr] 
Nov 17 01:42:52.360 INFO [stderr] warning: unused variable: `d`
Nov 17 01:42:52.360 INFO [stderr]   --> src/main.rs:12:13
Nov 17 01:42:52.360 INFO [stderr]    |
Nov 17 01:42:52.360 INFO [stderr] 12 |     let mut d = 5;
Nov 17 01:42:52.360 INFO [stderr]    |             ^ help: consider using `_d` instead
Nov 17 01:42:52.360 INFO [stderr] 
Nov 17 01:42:52.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:19:10
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 19 |     let (x, y) = (1, 2);
Nov 17 01:42:52.361 INFO [stderr]    |          ^ help: consider using `_x` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:19:13
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 19 |     let (x, y) = (1, 2);
Nov 17 01:42:52.361 INFO [stderr]    |             ^ help: consider using `_y` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:38:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 38 |     let x = true;
Nov 17 01:42:52.361 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:39:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 39 |     let y: bool = false;
Nov 17 01:42:52.361 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:44:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 44 |     let x = 'x';
Nov 17 01:42:52.361 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `two_hearts`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:45:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 45 |     let two_hearts = '¶';
Nov 17 01:42:52.361 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:48:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Nov 17 01:42:52.361 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.361 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:52.361 INFO [stderr]   --> src/main.rs:49:9
Nov 17 01:42:52.361 INFO [stderr]    |
Nov 17 01:42:52.361 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Nov 17 01:42:52.361 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:52.361 INFO [stderr] 
Nov 17 01:42:52.375 INFO [stderr] warning: unused variable: `a`
Nov 17 01:42:52.375 INFO [stderr]   --> src/main.rs:52:9
Nov 17 01:42:52.375 INFO [stderr]    |
Nov 17 01:42:52.375 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Nov 17 01:42:52.375 INFO [stderr]    |         ^ help: consider using `_a` instead
Nov 17 01:42:52.375 INFO [stderr] 
Nov 17 01:42:52.375 INFO [stderr] warning: unused variable: `m`
Nov 17 01:42:52.375 INFO [stderr]   --> src/main.rs:53:13
Nov 17 01:42:52.375 INFO [stderr]    |
Nov 17 01:42:52.375 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Nov 17 01:42:52.375 INFO [stderr]    |             ^ help: consider using `_m` instead
Nov 17 01:42:52.375 INFO [stderr] 
Nov 17 01:42:52.375 INFO [stderr] warning: unused variable: `complete`
Nov 17 01:42:52.375 INFO [stderr]   --> src/main.rs:60:9
Nov 17 01:42:52.375 INFO [stderr]    |
Nov 17 01:42:52.375 INFO [stderr] 60 |     let complete = &a[..];
Nov 17 01:42:52.375 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Nov 17 01:42:52.375 INFO [stderr] 
Nov 17 01:42:52.375 INFO [stderr] warning: unused variable: `middle`
Nov 17 01:42:52.375 INFO [stderr]   --> src/main.rs:62:9
Nov 17 01:42:52.375 INFO [stderr]    |
Nov 17 01:42:52.375 INFO [stderr] 62 |     let middle = &a[1..4];
Nov 17 01:42:52.375 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Nov 17 01:42:52.375 INFO [stderr] 
Nov 17 01:42:52.375 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.375 INFO [stderr]   --> src/main.rs:67:9
Nov 17 01:42:52.375 INFO [stderr]    |
Nov 17 01:42:52.375 INFO [stderr] 67 |     let x = (1, "hello");
Nov 17 01:42:52.375 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:52.375 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:68:9
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Nov 17 01:42:52.376 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: variable `x` is assigned to, but never used
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:70:13
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 70 |     let mut x = (1, 2);
Nov 17 01:42:52.376 INFO [stderr]    |             ^
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr]    = note: consider using `_x` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: value assigned to `x` is never read
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:72:5
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 72 |     x = y;
Nov 17 01:42:52.376 INFO [stderr]    |     ^
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:74:10
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:52.376 INFO [stderr]    |          ^ help: consider using `_x` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:74:13
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:52.376 INFO [stderr]    |             ^ help: consider using `_y` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: unused variable: `z`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:74:16
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:52.376 INFO [stderr]    |                ^ help: consider using `_z` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:93:9
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Nov 17 01:42:52.376 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:12:9
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 12 |     let mut d = 5;
Nov 17 01:42:52.376 INFO [stderr]    |         ----^
Nov 17 01:42:52.376 INFO [stderr]    |         |
Nov 17 01:42:52.376 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:53:9
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Nov 17 01:42:52.376 INFO [stderr]    |         ----^
Nov 17 01:42:52.376 INFO [stderr]    |         |
Nov 17 01:42:52.376 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: function is never used: `declartion`
Nov 17 01:42:52.376 INFO [stderr]  --> src/main.rs:3:1
Nov 17 01:42:52.376 INFO [stderr]   |
Nov 17 01:42:52.376 INFO [stderr] 3 | fn declartion () {
Nov 17 01:42:52.376 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Nov 17 01:42:52.376 INFO [stderr]   |
Nov 17 01:42:52.376 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: function is never used: `print_number`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:26:1
Nov 17 01:42:52.376 INFO [stderr]    |
Nov 17 01:42:52.376 INFO [stderr] 26 | fn print_number(x: i32) {
Nov 17 01:42:52.376 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:42:52.376 INFO [stderr] 
Nov 17 01:42:52.376 INFO [stderr] warning: function is never used: `add_one`
Nov 17 01:42:52.376 INFO [stderr]   --> src/main.rs:31:1
Nov 17 01:42:52.377 INFO [stderr]    |
Nov 17 01:42:52.377 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Nov 17 01:42:52.377 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:42:52.377 INFO [stderr] 
Nov 17 01:42:52.377 INFO [stderr] warning: function is never used: `primitive`
Nov 17 01:42:52.377 INFO [stderr]   --> src/main.rs:36:1
Nov 17 01:42:52.377 INFO [stderr]    |
Nov 17 01:42:52.377 INFO [stderr] 36 | fn primitive() {
Nov 17 01:42:52.377 INFO [stderr]    | ^^^^^^^^^^^^^^
Nov 17 01:42:52.377 INFO [stderr] 
Nov 17 01:42:52.377 INFO [stderr] warning: function is never used: `if_demo`
Nov 17 01:42:52.377 INFO [stderr]   --> src/main.rs:80:1
Nov 17 01:42:52.377 INFO [stderr]    |
Nov 17 01:42:52.377 INFO [stderr] 80 | fn if_demo() {
Nov 17 01:42:52.377 INFO [stderr]    | ^^^^^^^^^^^^
Nov 17 01:42:52.377 INFO [stderr] 
Nov 17 01:42:52.377 INFO [stderr] warning: function is never used: `loop_demo`
Nov 17 01:42:52.377 INFO [stderr]   --> src/main.rs:97:1
Nov 17 01:42:52.377 INFO [stderr]    |
Nov 17 01:42:52.377 INFO [stderr] 97 | fn loop_demo () {
Nov 17 01:42:52.377 INFO [stderr]    | ^^^^^^^^^^^^^^^
Nov 17 01:42:52.377 INFO [stderr] 
Nov 17 01:42:52.575 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Nov 17 01:42:52.575 INFO [stderr] su: No module specific data is present
Nov 17 01:42:52.943 INFO running `"docker" "inspect" "dae8806fe5fc37a68078d6915dee4b6283c47bf5b93521977fd1b6d634780593"`
Nov 17 01:42:53.101 INFO running `"docker" "rm" "-f" "dae8806fe5fc37a68078d6915dee4b6283c47bf5b93521977fd1b6d634780593"`
Nov 17 01:42:53.366 INFO [stdout] dae8806fe5fc37a68078d6915dee4b6283c47bf5b93521977fd1b6d634780593
Nov 17 01:42:53.372 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:42:53.819 INFO [stdout] 2bf231f3e709e02f03b5a5872d4bc07f71844004de68cf40fdd9c1be48bb2264
Nov 17 01:42:53.825 INFO running `"docker" "start" "-a" "2bf231f3e709e02f03b5a5872d4bc07f71844004de68cf40fdd9c1be48bb2264"`
Nov 17 01:42:55.835 INFO [stderr] usermod: no changes
Nov 17 01:42:55.891 INFO [stderr]    Compiling hello_world v0.1.0 (/source)
Nov 17 01:42:56.335 INFO [stderr] warning: unreachable statement
Nov 17 01:42:56.335 INFO [stderr]    --> src/main.rs:102:5
Nov 17 01:42:56.335 INFO [stderr]     |
Nov 17 01:42:56.335 INFO [stderr] 102 |     let mut x = 5;
Nov 17 01:42:56.335 INFO [stderr]     |     ^^^^^^^^^^^^^^
Nov 17 01:42:56.335 INFO [stderr]     |
Nov 17 01:42:56.335 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Nov 17 01:42:56.335 INFO [stderr] 
Nov 17 01:42:56.351 INFO [stderr] warning: unused variable: `a`
Nov 17 01:42:56.351 INFO [stderr]  --> src/main.rs:6:9
Nov 17 01:42:56.351 INFO [stderr]   |
Nov 17 01:42:56.351 INFO [stderr] 6 |     let a = 5;
Nov 17 01:42:56.351 INFO [stderr]   |         ^ help: consider using `_a` instead
Nov 17 01:42:56.351 INFO [stderr]   |
Nov 17 01:42:56.351 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 01:42:56.351 INFO [stderr] 
Nov 17 01:42:56.351 INFO [stderr] warning: unused variable: `b`
Nov 17 01:42:56.351 INFO [stderr]  --> src/main.rs:8:9
Nov 17 01:42:56.351 INFO [stderr]   |
Nov 17 01:42:56.351 INFO [stderr] 8 |     let b: i32 = 5;
Nov 17 01:42:56.351 INFO [stderr]   |         ^ help: consider using `_b` instead
Nov 17 01:42:56.351 INFO [stderr] 
Nov 17 01:42:56.351 INFO [stderr] warning: unused variable: `c`
Nov 17 01:42:56.351 INFO [stderr]   --> src/main.rs:10:9
Nov 17 01:42:56.351 INFO [stderr]    |
Nov 17 01:42:56.351 INFO [stderr] 10 |     let c: u32 = 5;
Nov 17 01:42:56.351 INFO [stderr]    |         ^ help: consider using `_c` instead
Nov 17 01:42:56.351 INFO [stderr] 
Nov 17 01:42:56.351 INFO [stderr] warning: unused variable: `d`
Nov 17 01:42:56.351 INFO [stderr]   --> src/main.rs:12:13
Nov 17 01:42:56.354 INFO [stderr]    |
Nov 17 01:42:56.354 INFO [stderr] 12 |     let mut d = 5;
Nov 17 01:42:56.354 INFO [stderr]    |             ^ help: consider using `_d` instead
Nov 17 01:42:56.359 INFO [stderr] 
Nov 17 01:42:56.359 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.359 INFO [stderr]   --> src/main.rs:19:10
Nov 17 01:42:56.359 INFO [stderr]    |
Nov 17 01:42:56.359 INFO [stderr] 19 |     let (x, y) = (1, 2);
Nov 17 01:42:56.359 INFO [stderr]    |          ^ help: consider using `_x` instead
Nov 17 01:42:56.359 INFO [stderr] 
Nov 17 01:42:56.359 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:56.359 INFO [stderr]   --> src/main.rs:19:13
Nov 17 01:42:56.359 INFO [stderr]    |
Nov 17 01:42:56.359 INFO [stderr] 19 |     let (x, y) = (1, 2);
Nov 17 01:42:56.359 INFO [stderr]    |             ^ help: consider using `_y` instead
Nov 17 01:42:56.359 INFO [stderr] 
Nov 17 01:42:56.359 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.359 INFO [stderr]   --> src/main.rs:38:9
Nov 17 01:42:56.359 INFO [stderr]    |
Nov 17 01:42:56.359 INFO [stderr] 38 |     let x = true;
Nov 17 01:42:56.359 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:56.359 INFO [stderr] 
Nov 17 01:42:56.359 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:56.359 INFO [stderr]   --> src/main.rs:39:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 39 |     let y: bool = false;
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:44:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 44 |     let x = 'x';
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `two_hearts`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:45:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 45 |     let two_hearts = '¶';
Nov 17 01:42:56.360 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_two_hearts` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:48:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 48 |     let x = 42; // xはi32型を持つ
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:49:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 49 |     let y = 1.0; // yはf64型を持つ
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `a`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:52:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 52 |     let a = [0, 1, 2, 3, 4];
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_a` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `m`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:53:13
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Nov 17 01:42:56.360 INFO [stderr]    |             ^ help: consider using `_m` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `complete`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:60:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 60 |     let complete = &a[..];
Nov 17 01:42:56.360 INFO [stderr]    |         ^^^^^^^^ help: consider using `_complete` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `middle`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:62:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 62 |     let middle = &a[1..4];
Nov 17 01:42:56.360 INFO [stderr]    |         ^^^^^^ help: consider using `_middle` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:67:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 67 |     let x = (1, "hello");
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:68:9
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 68 |     let x: (i32, &str) = (1, "hello");
Nov 17 01:42:56.360 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: variable `x` is assigned to, but never used
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:70:13
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 70 |     let mut x = (1, 2);
Nov 17 01:42:56.360 INFO [stderr]    |             ^
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr]    = note: consider using `_x` instead
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: value assigned to `x` is never read
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:72:5
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 72 |     x = y;
Nov 17 01:42:56.360 INFO [stderr]    |     ^
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 17 01:42:56.360 INFO [stderr] 
Nov 17 01:42:56.360 INFO [stderr] warning: unused variable: `x`
Nov 17 01:42:56.360 INFO [stderr]   --> src/main.rs:74:10
Nov 17 01:42:56.360 INFO [stderr]    |
Nov 17 01:42:56.360 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:56.361 INFO [stderr]    |          ^ help: consider using `_x` instead
Nov 17 01:42:56.361 INFO [stderr] 
Nov 17 01:42:56.361 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:56.361 INFO [stderr]   --> src/main.rs:74:13
Nov 17 01:42:56.361 INFO [stderr]    |
Nov 17 01:42:56.361 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:56.361 INFO [stderr]    |             ^ help: consider using `_y` instead
Nov 17 01:42:56.361 INFO [stderr] 
Nov 17 01:42:56.361 INFO [stderr] warning: unused variable: `z`
Nov 17 01:42:56.361 INFO [stderr]   --> src/main.rs:74:16
Nov 17 01:42:56.361 INFO [stderr]    |
Nov 17 01:42:56.361 INFO [stderr] 74 |     let (x, y, z) = (1, 2, 3);
Nov 17 01:42:56.361 INFO [stderr]    |                ^ help: consider using `_z` instead
Nov 17 01:42:56.361 INFO [stderr] 
Nov 17 01:42:56.361 INFO [stderr] warning: unused variable: `y`
Nov 17 01:42:56.361 INFO [stderr]   --> src/main.rs:93:9
Nov 17 01:42:56.361 INFO [stderr]    |
Nov 17 01:42:56.361 INFO [stderr] 93 |     let y = if x == 5 { 10 } else { 15 };
Nov 17 01:42:56.361 INFO [stderr]    |         ^ help: consider using `_y` instead
Nov 17 01:42:56.361 INFO [stderr] 
Nov 17 01:42:56.361 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:42:56.361 INFO [stderr]   --> src/main.rs:12:9
Nov 17 01:42:56.361 INFO [stderr]    |
Nov 17 01:42:56.361 INFO [stderr] 12 |     let mut d = 5;
Nov 17 01:42:56.361 INFO [stderr]    |         ----^
Nov 17 01:42:56.361 INFO [stderr]    |         |
Nov 17 01:42:56.361 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:42:56.361 INFO [stderr]    |
Nov 17 01:42:56.361 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 01:42:56.361 INFO [stderr] 
Nov 17 01:42:56.363 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:42:56.363 INFO [stderr]   --> src/main.rs:53:9
Nov 17 01:42:56.363 INFO [stderr]    |
Nov 17 01:42:56.363 INFO [stderr] 53 |     let mut m = [1, 2, 3];
Nov 17 01:42:56.363 INFO [stderr]    |         ----^
Nov 17 01:42:56.363 INFO [stderr]    |         |
Nov 17 01:42:56.364 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:42:56.364 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `declartion`
Nov 17 01:42:56.367 INFO [stderr]  --> src/main.rs:3:1
Nov 17 01:42:56.367 INFO [stderr]   |
Nov 17 01:42:56.367 INFO [stderr] 3 | fn declartion () {
Nov 17 01:42:56.367 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr]   |
Nov 17 01:42:56.367 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `print_number`
Nov 17 01:42:56.367 INFO [stderr]   --> src/main.rs:26:1
Nov 17 01:42:56.367 INFO [stderr]    |
Nov 17 01:42:56.367 INFO [stderr] 26 | fn print_number(x: i32) {
Nov 17 01:42:56.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `add_one`
Nov 17 01:42:56.367 INFO [stderr]   --> src/main.rs:31:1
Nov 17 01:42:56.367 INFO [stderr]    |
Nov 17 01:42:56.367 INFO [stderr] 31 | fn add_one(x: i32) -> i32 {
Nov 17 01:42:56.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `primitive`
Nov 17 01:42:56.367 INFO [stderr]   --> src/main.rs:36:1
Nov 17 01:42:56.367 INFO [stderr]    |
Nov 17 01:42:56.367 INFO [stderr] 36 | fn primitive() {
Nov 17 01:42:56.367 INFO [stderr]    | ^^^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `if_demo`
Nov 17 01:42:56.367 INFO [stderr]   --> src/main.rs:80:1
Nov 17 01:42:56.367 INFO [stderr]    |
Nov 17 01:42:56.367 INFO [stderr] 80 | fn if_demo() {
Nov 17 01:42:56.367 INFO [stderr]    | ^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.367 INFO [stderr] warning: function is never used: `loop_demo`
Nov 17 01:42:56.367 INFO [stderr]   --> src/main.rs:97:1
Nov 17 01:42:56.367 INFO [stderr]    |
Nov 17 01:42:56.367 INFO [stderr] 97 | fn loop_demo () {
Nov 17 01:42:56.367 INFO [stderr]    | ^^^^^^^^^^^^^^^
Nov 17 01:42:56.367 INFO [stderr] 
Nov 17 01:42:56.721 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Nov 17 01:42:56.724 INFO [stderr] su: No module specific data is present
Nov 17 01:42:58.069 INFO running `"docker" "inspect" "2bf231f3e709e02f03b5a5872d4bc07f71844004de68cf40fdd9c1be48bb2264"`
Nov 17 01:42:58.275 INFO running `"docker" "rm" "-f" "2bf231f3e709e02f03b5a5872d4bc07f71844004de68cf40fdd9c1be48bb2264"`
Nov 17 01:42:58.583 INFO [stdout] 2bf231f3e709e02f03b5a5872d4bc07f71844004de68cf40fdd9c1be48bb2264
Nov 17 01:42:58.585 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:42:59.017 INFO [stdout] 3bdb68e75a0892c90a590b7ab6c4df5f7146ee2deb932342c24d9bd0b2cbcd30
Nov 17 01:42:59.020 INFO running `"docker" "start" "-a" "3bdb68e75a0892c90a590b7ab6c4df5f7146ee2deb932342c24d9bd0b2cbcd30"`
Nov 17 01:43:00.542 INFO [stderr] usermod: no changes
Nov 17 01:43:00.584 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 17 01:43:00.584 INFO [stderr]      Running /target/debug/deps/hello_world-bee367ca86642338
Nov 17 01:43:00.585 INFO [stdout] 
Nov 17 01:43:00.585 INFO [stdout] running 0 tests
Nov 17 01:43:00.585 INFO [stdout] 
Nov 17 01:43:00.585 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 01:43:00.585 INFO [stdout] 
Nov 17 01:43:00.586 INFO [stderr] su: No module specific data is present
Nov 17 01:43:01.630 INFO running `"docker" "inspect" "3bdb68e75a0892c90a590b7ab6c4df5f7146ee2deb932342c24d9bd0b2cbcd30"`
Nov 17 01:43:01.887 INFO running `"docker" "rm" "-f" "3bdb68e75a0892c90a590b7ab6c4df5f7146ee2deb932342c24d9bd0b2cbcd30"`
Nov 17 01:43:02.159 INFO [stdout] 3bdb68e75a0892c90a590b7ab6c4df5f7146ee2deb932342c24d9bd0b2cbcd30