Dec 01 02:24:55.460 INFO testing sikkiv/rust-samples against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 01 02:24:55.461 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 02:24:56.111 INFO [stdout] 3335f883dd30d918bea8b661e8b26824275b78dcb9b8e9bd1d2c33526404c37b
Dec 01 02:24:56.119 INFO running `"docker" "start" "-a" "3335f883dd30d918bea8b661e8b26824275b78dcb9b8e9bd1d2c33526404c37b"`
Dec 01 02:24:57.111 INFO [stderr] usermod: no changes
Dec 01 02:24:57.199 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Dec 01 02:24:57.683 INFO [stderr] warning: unused variable: `fancy`
Dec 01 02:24:57.683 INFO [stderr]    --> src/main.rs:642:30
Dec 01 02:24:57.684 INFO [stderr]     |
Dec 01 02:24:57.684 INFO [stderr] 642 |             let capturing = |fancy| test;
Dec 01 02:24:57.685 INFO [stderr]     |                              ^^^^^ help: consider using `_fancy` instead
Dec 01 02:24:57.685 INFO [stderr]     |
Dec 01 02:24:57.685 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 01 02:24:57.685 INFO [stderr] 
Dec 01 02:24:57.686 INFO [stderr] warning: unused variable: `scope_valid`
Dec 01 02:24:57.686 INFO [stderr]  --> src/main.rs:7:13
Dec 01 02:24:57.686 INFO [stderr]   |
Dec 01 02:24:57.687 INFO [stderr] 7 |         let scope_valid = "here it's valid";
Dec 01 02:24:57.687 INFO [stderr]   |             ^^^^^^^^^^^ help: consider using `_scope_valid` instead
Dec 01 02:24:57.687 INFO [stderr] 
Dec 01 02:24:57.688 INFO [stderr] warning: unused variable: `s1`
Dec 01 02:24:57.688 INFO [stderr]   --> src/main.rs:33:13
Dec 01 02:24:57.688 INFO [stderr]    |
Dec 01 02:24:57.689 INFO [stderr] 33 |         let s1 = s;
Dec 01 02:24:57.689 INFO [stderr]    |             ^^ help: consider using `_s1` instead
Dec 01 02:24:57.689 INFO [stderr] 
Dec 01 02:24:57.690 INFO [stderr] warning: unused variable: `u`
Dec 01 02:24:57.690 INFO [stderr]   --> src/main.rs:68:13
Dec 01 02:24:57.690 INFO [stderr]    |
Dec 01 02:24:57.690 INFO [stderr] 68 |         let u = calculate_length(&s1);
Dec 01 02:24:57.695 INFO [stderr]    |             ^ help: consider using `_u` instead
Dec 01 02:24:57.695 INFO [stderr] 
Dec 01 02:24:57.696 INFO [stderr] warning: unused variable: `r1`
Dec 01 02:24:57.696 INFO [stderr]    --> src/main.rs:104:17
Dec 01 02:24:57.696 INFO [stderr]     |
Dec 01 02:24:57.696 INFO [stderr] 104 |             let r1 = &mut s;
Dec 01 02:24:57.697 INFO [stderr]     |                 ^^ help: consider using `_r1` instead
Dec 01 02:24:57.697 INFO [stderr] 
Dec 01 02:24:57.697 INFO [stderr] warning: unused variable: `r3`
Dec 01 02:24:57.698 INFO [stderr]    --> src/main.rs:107:13
Dec 01 02:24:57.698 INFO [stderr]     |
Dec 01 02:24:57.698 INFO [stderr] 107 |         let r3 = &mut s;
Dec 01 02:24:57.699 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Dec 01 02:24:57.699 INFO [stderr] 
Dec 01 02:24:57.699 INFO [stderr] warning: unused variable: `reference_to_something`
Dec 01 02:24:57.700 INFO [stderr]    --> src/main.rs:129:13
Dec 01 02:24:57.700 INFO [stderr]     |
Dec 01 02:24:57.700 INFO [stderr] 129 |         let reference_to_something = no_dangle();
Dec 01 02:24:57.700 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_reference_to_something` instead
Dec 01 02:24:57.701 INFO [stderr] 
Dec 01 02:24:57.701 INFO [stderr] warning: unused variable: `first`
Dec 01 02:24:57.701 INFO [stderr]    --> src/main.rs:138:13
Dec 01 02:24:57.702 INFO [stderr]     |
Dec 01 02:24:57.702 INFO [stderr] 138 |         let first = &s[0..5];
Dec 01 02:24:57.702 INFO [stderr]     |             ^^^^^ help: consider using `_first` instead
Dec 01 02:24:57.703 INFO [stderr] 
Dec 01 02:24:57.703 INFO [stderr] warning: unused variable: `second`
Dec 01 02:24:57.703 INFO [stderr]    --> src/main.rs:141:13
Dec 01 02:24:57.704 INFO [stderr]     |
Dec 01 02:24:57.704 INFO [stderr] 141 |         let second = &s[6..11];
Dec 01 02:24:57.704 INFO [stderr]     |             ^^^^^^ help: consider using `_second` instead
Dec 01 02:24:57.705 INFO [stderr] 
Dec 01 02:24:57.705 INFO [stderr] warning: unused variable: `s1`
Dec 01 02:24:57.705 INFO [stderr]    --> src/main.rs:146:13
Dec 01 02:24:57.705 INFO [stderr]     |
Dec 01 02:24:57.715 INFO [stderr] 146 |         let s1 = "Hello world!"; // is a slice pointing to the memory in the binary
Dec 01 02:24:57.715 INFO [stderr]     |             ^^ help: consider using `_s1` instead
Dec 01 02:24:57.716 INFO [stderr] 
Dec 01 02:24:57.716 INFO [stderr] warning: unused variable: `third_test`
Dec 01 02:24:57.716 INFO [stderr]    --> src/main.rs:184:13
Dec 01 02:24:57.717 INFO [stderr]     |
Dec 01 02:24:57.717 INFO [stderr] 184 |         let third_test = MyCustomObject {
Dec 01 02:24:57.717 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_third_test` instead
Dec 01 02:24:57.718 INFO [stderr] 
Dec 01 02:24:57.718 INFO [stderr] warning: unused variable: `point`
Dec 01 02:24:57.718 INFO [stderr]    --> src/main.rs:192:13
Dec 01 02:24:57.718 INFO [stderr]     |
Dec 01 02:24:57.719 INFO [stderr] 192 |         let point = Point(0, 0, 0);
Dec 01 02:24:57.719 INFO [stderr]     |             ^^^^^ help: consider using `_point` instead
Dec 01 02:24:57.719 INFO [stderr] 
Dec 01 02:24:57.720 INFO [stderr] warning: unused variable: `home`
Dec 01 02:24:57.720 INFO [stderr]    --> src/main.rs:221:17
Dec 01 02:24:57.720 INFO [stderr]     |
Dec 01 02:24:57.720 INFO [stderr] 221 |             let home = IpAddr::V4(String::from("127.0.0.1"));
Dec 01 02:24:57.721 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Dec 01 02:24:57.721 INFO [stderr] 
Dec 01 02:24:57.721 INFO [stderr] warning: unused variable: `loopback`
Dec 01 02:24:57.722 INFO [stderr]    --> src/main.rs:222:17
Dec 01 02:24:57.722 INFO [stderr]     |
Dec 01 02:24:57.722 INFO [stderr] 222 |             let loopback = IpAddr::V6(String::from("::1"));
Dec 01 02:24:57.723 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Dec 01 02:24:57.723 INFO [stderr] 
Dec 01 02:24:57.723 INFO [stderr] warning: unused variable: `home`
Dec 01 02:24:57.724 INFO [stderr]    --> src/main.rs:232:17
Dec 01 02:24:57.724 INFO [stderr]     |
Dec 01 02:24:57.724 INFO [stderr] 232 |             let home = IpAddr::V4(127, 0, 0, 1);
Dec 01 02:24:57.724 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Dec 01 02:24:57.725 INFO [stderr] 
Dec 01 02:24:57.725 INFO [stderr] warning: unused variable: `loopback`
Dec 01 02:24:57.725 INFO [stderr]    --> src/main.rs:233:17
Dec 01 02:24:57.726 INFO [stderr]     |
Dec 01 02:24:57.726 INFO [stderr] 233 |             let loopback = IpAddr::V6(String::from("::1"));
Dec 01 02:24:57.726 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Dec 01 02:24:57.727 INFO [stderr] 
Dec 01 02:24:57.727 INFO [stderr] warning: unused variable: `some_number`
Dec 01 02:24:57.727 INFO [stderr]    --> src/main.rs:241:17
Dec 01 02:24:57.728 INFO [stderr]     |
Dec 01 02:24:57.728 INFO [stderr] 241 |             let some_number = Some(5);
Dec 01 02:24:57.728 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_number` instead
Dec 01 02:24:57.728 INFO [stderr] 
Dec 01 02:24:57.735 INFO [stderr] warning: unused variable: `some_string`
Dec 01 02:24:57.735 INFO [stderr]    --> src/main.rs:242:17
Dec 01 02:24:57.735 INFO [stderr]     |
Dec 01 02:24:57.736 INFO [stderr] 242 |             let some_string = Some("hello");
Dec 01 02:24:57.736 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_string` instead
Dec 01 02:24:57.736 INFO [stderr] 
Dec 01 02:24:57.736 INFO [stderr] warning: unused variable: `absent_number`
Dec 01 02:24:57.737 INFO [stderr]    --> src/main.rs:243:17
Dec 01 02:24:57.737 INFO [stderr]     |
Dec 01 02:24:57.737 INFO [stderr] 243 |             let absent_number: Option<i32> = None; // here we have to explicitly state the type because no infering mechanism possible
Dec 01 02:24:57.738 INFO [stderr]     |                 ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Dec 01 02:24:57.738 INFO [stderr] 
Dec 01 02:24:57.738 INFO [stderr] warning: unused variable: `six`
Dec 01 02:24:57.739 INFO [stderr]    --> src/main.rs:309:17
Dec 01 02:24:57.739 INFO [stderr]     |
Dec 01 02:24:57.739 INFO [stderr] 309 |             let six = plus_one(five);
Dec 01 02:24:57.739 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Dec 01 02:24:57.740 INFO [stderr] 
Dec 01 02:24:57.740 INFO [stderr] warning: unused variable: `none`
Dec 01 02:24:57.740 INFO [stderr]    --> src/main.rs:310:17
Dec 01 02:24:57.741 INFO [stderr]     |
Dec 01 02:24:57.741 INFO [stderr] 310 |             let none = plus_one(None);
Dec 01 02:24:57.741 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Dec 01 02:24:57.742 INFO [stderr] 
Dec 01 02:24:57.742 INFO [stderr] warning: unused variable: `six`
Dec 01 02:24:57.742 INFO [stderr]    --> src/main.rs:324:17
Dec 01 02:24:57.742 INFO [stderr]     |
Dec 01 02:24:57.751 INFO [stderr] 324 |             let six = plus_one(five);
Dec 01 02:24:57.751 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Dec 01 02:24:57.752 INFO [stderr] 
Dec 01 02:24:57.752 INFO [stderr] warning: unused variable: `none`
Dec 01 02:24:57.752 INFO [stderr]    --> src/main.rs:325:17
Dec 01 02:24:57.753 INFO [stderr]     |
Dec 01 02:24:57.753 INFO [stderr] 325 |             let none = plus_one(None);
Dec 01 02:24:57.753 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Dec 01 02:24:57.753 INFO [stderr] 
Dec 01 02:24:57.754 INFO [stderr] warning: unused variable: `my_vec`
Dec 01 02:24:57.754 INFO [stderr]    --> src/main.rs:353:17
Dec 01 02:24:57.754 INFO [stderr]     |
Dec 01 02:24:57.755 INFO [stderr] 353 |             let my_vec = vec![1, 2, 3];
Dec 01 02:24:57.755 INFO [stderr]     |                 ^^^^^^ help: consider using `_my_vec` instead
Dec 01 02:24:57.755 INFO [stderr] 
Dec 01 02:24:57.756 INFO [stderr] warning: unused variable: `f`
Dec 01 02:24:57.756 INFO [stderr]    --> src/main.rs:361:17
Dec 01 02:24:57.756 INFO [stderr]     |
Dec 01 02:24:57.756 INFO [stderr] 361 |             let f = match f {
Dec 01 02:24:57.757 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:24:57.757 INFO [stderr] 
Dec 01 02:24:57.757 INFO [stderr] warning: unused variable: `f`
Dec 01 02:24:57.757 INFO [stderr]    --> src/main.rs:366:17
Dec 01 02:24:57.758 INFO [stderr]     |
Dec 01 02:24:57.758 INFO [stderr] 366 |             let f = match File::open("test.txt") {
Dec 01 02:24:57.758 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:24:57.758 INFO [stderr] 
Dec 01 02:24:57.759 INFO [stderr] warning: unused variable: `f`
Dec 01 02:24:57.759 INFO [stderr]    --> src/main.rs:373:17
Dec 01 02:24:57.759 INFO [stderr]     |
Dec 01 02:24:57.760 INFO [stderr] 373 |             let f = match File::open("ksdfksd.txt") {
Dec 01 02:24:57.760 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:24:57.760 INFO [stderr] 
Dec 01 02:24:57.761 INFO [stderr] warning: unused variable: `e`
Dec 01 02:24:57.761 INFO [stderr]    --> src/main.rs:380:29
Dec 01 02:24:57.761 INFO [stderr]     |
Dec 01 02:24:57.761 INFO [stderr] 380 |                         Err(e) => panic!(
Dec 01 02:24:57.762 INFO [stderr]     |                             ^ help: consider using `_e` instead
Dec 01 02:24:57.762 INFO [stderr] 
Dec 01 02:24:57.762 INFO [stderr] warning: unused variable: `f`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:398:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 398 |             let f = File::open("something-that-does-not-exist.txt").unwrap();
Dec 01 02:24:57.763 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `f`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:401:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 401 |             let f = File::open("kskiefi.txt").expect("failed opening the file xxx");
Dec 01 02:24:57.763 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `integer`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:438:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 438 |             let integer = Point { x: 5, y: 10 };
Dec 01 02:24:57.763 INFO [stderr]     |                 ^^^^^^^ help: consider using `_integer` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `float`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:439:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 439 |             let float = Point { x: 0.5, y: 1.4 };
Dec 01 02:24:57.763 INFO [stderr]     |                 ^^^^^ help: consider using `_float` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `mixed_int_float`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:449:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 449 |             let mixed_int_float = MixedPoint { x: 5, y: 1.0 };
Dec 01 02:24:57.763 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_mixed_int_float` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `closure_runs_with_captured_value`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:643:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 643 |             let closure_runs_with_captured_value = capturing(1);
Dec 01 02:24:57.763 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_closure_runs_with_captured_value` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `s`
Dec 01 02:24:57.763 INFO [stderr]   --> src/main.rs:78:19
Dec 01 02:24:57.763 INFO [stderr]    |
Dec 01 02:24:57.763 INFO [stderr] 78 |         fn change(s: &String) {
Dec 01 02:24:57.763 INFO [stderr]    |                   ^ help: consider using `_s` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: unused variable: `item`
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:505:39
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Dec 01 02:24:57.763 INFO [stderr]     |                                       ^^^^ help: consider using `_item` instead
Dec 01 02:24:57.763 INFO [stderr] 
Dec 01 02:24:57.763 INFO [stderr] warning: variable does not need to be mutable
Dec 01 02:24:57.763 INFO [stderr]    --> src/main.rs:655:17
Dec 01 02:24:57.763 INFO [stderr]     |
Dec 01 02:24:57.763 INFO [stderr] 655 |             let mut v_iter = v.iter();
Dec 01 02:24:57.763 INFO [stderr]     |                 ----^^^^^^
Dec 01 02:24:57.764 INFO [stderr]     |                 |
Dec 01 02:24:57.764 INFO [stderr]     |                 help: remove this `mut`
Dec 01 02:24:57.764 INFO [stderr]     |
Dec 01 02:24:57.764 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 01 02:24:57.764 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: function is never used: `build_user`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:176:9
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 176 |         fn build_user(name: String, active: bool) -> MyCustomObject {
Dec 01 02:24:57.799 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `Special`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:249:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 249 |                 Special,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `Nothing`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:251:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 251 |                 Nothing,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `Boring`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:252:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 252 |                 Boring,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `Active`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:278:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 278 |                 Active,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `IBM`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:282:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 282 |                 IBM,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: variant is never constructed: `PowerPC`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:283:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 283 |                 PowerPC,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: function is never used: `read_username_from_file`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:411:13
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 411 |             fn read_username_from_file() -> Result<String, io::Error> {
Dec 01 02:24:57.799 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: function is never used: `read_something_from_file`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:422:13
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 422 |             fn read_something_from_file() -> Result<String, io::Error> {
Dec 01 02:24:57.799 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: field is never used: `x`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:434:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 434 |                 x: T,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: field is never used: `y`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:435:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 435 |                 y: T,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: field is never used: `x`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:445:17
Dec 01 02:24:57.799 INFO [stderr]     |
Dec 01 02:24:57.799 INFO [stderr] 445 |                 x: T,
Dec 01 02:24:57.799 INFO [stderr]     |                 ^^^^
Dec 01 02:24:57.799 INFO [stderr] 
Dec 01 02:24:57.799 INFO [stderr] warning: field is never used: `y`
Dec 01 02:24:57.799 INFO [stderr]    --> src/main.rs:446:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 446 |                 y: U,
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: method is never used: `x`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:454:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 454 |                 fn x(&self) -> &T {
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:461:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 461 |                 fn distance_from_origin(&self) -> f32 {
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: method is never used: `mixup`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:469:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 469 |                 fn mixup<V, W>(self, other: MixedPoint<V, W>) -> MixedPoint<T, W> {
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: struct is never constructed: `Tweet`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:486:13
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 486 |             pub struct Tweet {
Dec 01 02:24:57.800 INFO [stderr]     |             ^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: function is never used: `notify`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:505:13
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Dec 01 02:24:57.800 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: struct is never constructed: `Pair`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:526:13
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 526 |             struct Pair<T> {
Dec 01 02:24:57.800 INFO [stderr]     |             ^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: method is never used: `new`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:532:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 532 |                 fn new(x: T, y: T) -> Self {
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: method is never used: `cmp_display`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:538:17
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 538 |                 fn cmp_display(&self) {
Dec 01 02:24:57.800 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: function is never used: `longest`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:573:13
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 573 |             fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Dec 01 02:24:57.800 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:57.800 INFO [stderr] warning: struct is never constructed: `Test`
Dec 01 02:24:57.800 INFO [stderr]    --> src/main.rs:633:13
Dec 01 02:24:57.800 INFO [stderr]     |
Dec 01 02:24:57.800 INFO [stderr] 633 | /             struct Test<T>
Dec 01 02:24:57.800 INFO [stderr] 634 | |             where
Dec 01 02:24:57.800 INFO [stderr] 635 | |                 T: Fn(u32) -> u32,
Dec 01 02:24:57.800 INFO [stderr] 636 | |             {
Dec 01 02:24:57.800 INFO [stderr] 637 | |                 closure_within_struct: T,
Dec 01 02:24:57.800 INFO [stderr] 638 | |                 some_other_value: Option<u32>,
Dec 01 02:24:57.800 INFO [stderr] 639 | |             }
Dec 01 02:24:57.800 INFO [stderr]     | |_____________^
Dec 01 02:24:57.800 INFO [stderr] 
Dec 01 02:24:58.543 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
Dec 01 02:24:58.543 INFO [stderr] su: No module specific data is present
Dec 01 02:24:59.125 INFO running `"docker" "inspect" "3335f883dd30d918bea8b661e8b26824275b78dcb9b8e9bd1d2c33526404c37b"`
Dec 01 02:24:59.333 INFO running `"docker" "rm" "-f" "3335f883dd30d918bea8b661e8b26824275b78dcb9b8e9bd1d2c33526404c37b"`
Dec 01 02:24:59.567 INFO [stdout] 3335f883dd30d918bea8b661e8b26824275b78dcb9b8e9bd1d2c33526404c37b
Dec 01 02:24:59.572 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 02:24:59.843 INFO [stdout] 2e7c7de33fae074e503453d82e622230f92c7bab9de9a9dc48660063c73b16f9
Dec 01 02:24:59.852 INFO running `"docker" "start" "-a" "2e7c7de33fae074e503453d82e622230f92c7bab9de9a9dc48660063c73b16f9"`
Dec 01 02:25:00.765 INFO [stderr] usermod: no changes
Dec 01 02:25:00.819 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Dec 01 02:25:01.183 INFO [stderr] warning: unused variable: `fancy`
Dec 01 02:25:01.184 INFO [stderr]    --> src/main.rs:642:30
Dec 01 02:25:01.185 INFO [stderr]     |
Dec 01 02:25:01.185 INFO [stderr] 642 |             let capturing = |fancy| test;
Dec 01 02:25:01.185 INFO [stderr]     |                              ^^^^^ help: consider using `_fancy` instead
Dec 01 02:25:01.185 INFO [stderr]     |
Dec 01 02:25:01.186 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 01 02:25:01.186 INFO [stderr] 
Dec 01 02:25:01.186 INFO [stderr] warning: unused variable: `scope_valid`
Dec 01 02:25:01.187 INFO [stderr]  --> src/main.rs:7:13
Dec 01 02:25:01.187 INFO [stderr]   |
Dec 01 02:25:01.187 INFO [stderr] 7 |         let scope_valid = "here it's valid";
Dec 01 02:25:01.187 INFO [stderr]   |             ^^^^^^^^^^^ help: consider using `_scope_valid` instead
Dec 01 02:25:01.188 INFO [stderr] 
Dec 01 02:25:01.188 INFO [stderr] warning: unused variable: `s1`
Dec 01 02:25:01.188 INFO [stderr]   --> src/main.rs:33:13
Dec 01 02:25:01.189 INFO [stderr]    |
Dec 01 02:25:01.189 INFO [stderr] 33 |         let s1 = s;
Dec 01 02:25:01.189 INFO [stderr]    |             ^^ help: consider using `_s1` instead
Dec 01 02:25:01.189 INFO [stderr] 
Dec 01 02:25:01.189 INFO [stderr] warning: unused variable: `u`
Dec 01 02:25:01.189 INFO [stderr]   --> src/main.rs:68:13
Dec 01 02:25:01.190 INFO [stderr]    |
Dec 01 02:25:01.190 INFO [stderr] 68 |         let u = calculate_length(&s1);
Dec 01 02:25:01.190 INFO [stderr]    |             ^ help: consider using `_u` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `r1`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:104:17
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 104 |             let r1 = &mut s;
Dec 01 02:25:01.190 INFO [stderr]     |                 ^^ help: consider using `_r1` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `r3`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:107:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 107 |         let r3 = &mut s;
Dec 01 02:25:01.190 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `reference_to_something`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:129:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 129 |         let reference_to_something = no_dangle();
Dec 01 02:25:01.190 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_reference_to_something` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `first`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:138:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 138 |         let first = &s[0..5];
Dec 01 02:25:01.190 INFO [stderr]     |             ^^^^^ help: consider using `_first` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `second`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:141:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 141 |         let second = &s[6..11];
Dec 01 02:25:01.190 INFO [stderr]     |             ^^^^^^ help: consider using `_second` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `s1`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:146:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 146 |         let s1 = "Hello world!"; // is a slice pointing to the memory in the binary
Dec 01 02:25:01.190 INFO [stderr]     |             ^^ help: consider using `_s1` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `third_test`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:184:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 184 |         let third_test = MyCustomObject {
Dec 01 02:25:01.190 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_third_test` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `point`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:192:13
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 192 |         let point = Point(0, 0, 0);
Dec 01 02:25:01.190 INFO [stderr]     |             ^^^^^ help: consider using `_point` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `home`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:221:17
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 221 |             let home = IpAddr::V4(String::from("127.0.0.1"));
Dec 01 02:25:01.190 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `loopback`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:222:17
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 222 |             let loopback = IpAddr::V6(String::from("::1"));
Dec 01 02:25:01.190 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `home`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:232:17
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.190 INFO [stderr] 232 |             let home = IpAddr::V4(127, 0, 0, 1);
Dec 01 02:25:01.190 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Dec 01 02:25:01.190 INFO [stderr] 
Dec 01 02:25:01.190 INFO [stderr] warning: unused variable: `loopback`
Dec 01 02:25:01.190 INFO [stderr]    --> src/main.rs:233:17
Dec 01 02:25:01.190 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 233 |             let loopback = IpAddr::V6(String::from("::1"));
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `some_number`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:241:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 241 |             let some_number = Some(5);
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_number` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `some_string`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:242:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 242 |             let some_string = Some("hello");
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_string` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `absent_number`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:243:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 243 |             let absent_number: Option<i32> = None; // here we have to explicitly state the type because no infering mechanism possible
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `six`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:309:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 309 |             let six = plus_one(five);
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `none`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:310:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 310 |             let none = plus_one(None);
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `six`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:324:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 324 |             let six = plus_one(five);
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `none`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:325:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 325 |             let none = plus_one(None);
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `my_vec`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:353:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 353 |             let my_vec = vec![1, 2, 3];
Dec 01 02:25:01.191 INFO [stderr]     |                 ^^^^^^ help: consider using `_my_vec` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `f`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:361:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 361 |             let f = match f {
Dec 01 02:25:01.191 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `f`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:366:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 366 |             let f = match File::open("test.txt") {
Dec 01 02:25:01.191 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `f`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:373:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 373 |             let f = match File::open("ksdfksd.txt") {
Dec 01 02:25:01.191 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `e`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:380:29
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 380 |                         Err(e) => panic!(
Dec 01 02:25:01.191 INFO [stderr]     |                             ^ help: consider using `_e` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `f`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:398:17
Dec 01 02:25:01.191 INFO [stderr]     |
Dec 01 02:25:01.191 INFO [stderr] 398 |             let f = File::open("something-that-does-not-exist.txt").unwrap();
Dec 01 02:25:01.191 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:25:01.191 INFO [stderr] 
Dec 01 02:25:01.191 INFO [stderr] warning: unused variable: `f`
Dec 01 02:25:01.191 INFO [stderr]    --> src/main.rs:401:17
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 401 |             let f = File::open("kskiefi.txt").expect("failed opening the file xxx");
Dec 01 02:25:01.192 INFO [stderr]     |                 ^ help: consider using `_f` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `integer`
Dec 01 02:25:01.192 INFO [stderr]    --> src/main.rs:438:17
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 438 |             let integer = Point { x: 5, y: 10 };
Dec 01 02:25:01.192 INFO [stderr]     |                 ^^^^^^^ help: consider using `_integer` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `float`
Dec 01 02:25:01.192 INFO [stderr]    --> src/main.rs:439:17
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 439 |             let float = Point { x: 0.5, y: 1.4 };
Dec 01 02:25:01.192 INFO [stderr]     |                 ^^^^^ help: consider using `_float` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `mixed_int_float`
Dec 01 02:25:01.192 INFO [stderr]    --> src/main.rs:449:17
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 449 |             let mixed_int_float = MixedPoint { x: 5, y: 1.0 };
Dec 01 02:25:01.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_mixed_int_float` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `closure_runs_with_captured_value`
Dec 01 02:25:01.192 INFO [stderr]    --> src/main.rs:643:17
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 643 |             let closure_runs_with_captured_value = capturing(1);
Dec 01 02:25:01.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_closure_runs_with_captured_value` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `s`
Dec 01 02:25:01.192 INFO [stderr]   --> src/main.rs:78:19
Dec 01 02:25:01.192 INFO [stderr]    |
Dec 01 02:25:01.192 INFO [stderr] 78 |         fn change(s: &String) {
Dec 01 02:25:01.192 INFO [stderr]    |                   ^ help: consider using `_s` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.192 INFO [stderr] warning: unused variable: `item`
Dec 01 02:25:01.192 INFO [stderr]    --> src/main.rs:505:39
Dec 01 02:25:01.192 INFO [stderr]     |
Dec 01 02:25:01.192 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Dec 01 02:25:01.192 INFO [stderr]     |                                       ^^^^ help: consider using `_item` instead
Dec 01 02:25:01.192 INFO [stderr] 
Dec 01 02:25:01.207 INFO [stderr] warning: variable does not need to be mutable
Dec 01 02:25:01.208 INFO [stderr]    --> src/main.rs:655:17
Dec 01 02:25:01.208 INFO [stderr]     |
Dec 01 02:25:01.208 INFO [stderr] 655 |             let mut v_iter = v.iter();
Dec 01 02:25:01.208 INFO [stderr]     |                 ----^^^^^^
Dec 01 02:25:01.208 INFO [stderr]     |                 |
Dec 01 02:25:01.208 INFO [stderr]     |                 help: remove this `mut`
Dec 01 02:25:01.208 INFO [stderr]     |
Dec 01 02:25:01.208 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 01 02:25:01.208 INFO [stderr] 
Dec 01 02:25:01.223 INFO [stderr] warning: cannot test inner items
Dec 01 02:25:01.223 INFO [stderr]    --> src/main.rs:593:13
Dec 01 02:25:01.223 INFO [stderr]     |
Dec 01 02:25:01.223 INFO [stderr] 593 |             #[test]
Dec 01 02:25:01.223 INFO [stderr]     |             ^^^^^^^
Dec 01 02:25:01.223 INFO [stderr]     |
Dec 01 02:25:01.223 INFO [stderr]     = note: #[warn(unnameable_test_items)] on by default
Dec 01 02:25:01.223 INFO [stderr] 
Dec 01 02:25:01.223 INFO [stderr] warning: cannot test inner items
Dec 01 02:25:01.223 INFO [stderr]    --> src/main.rs:599:13
Dec 01 02:25:01.223 INFO [stderr]     |
Dec 01 02:25:01.223 INFO [stderr] 599 |             #[test]
Dec 01 02:25:01.223 INFO [stderr]     |             ^^^^^^^
Dec 01 02:25:01.223 INFO [stderr] 
Dec 01 02:25:01.223 INFO [stderr] warning: cannot test inner items
Dec 01 02:25:01.223 INFO [stderr]    --> src/main.rs:610:13
Dec 01 02:25:01.223 INFO [stderr]     |
Dec 01 02:25:01.223 INFO [stderr] 610 |             #[test]
Dec 01 02:25:01.223 INFO [stderr]     |             ^^^^^^^
Dec 01 02:25:01.223 INFO [stderr] 
Dec 01 02:25:01.762 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
Dec 01 02:25:01.764 INFO [stderr] su: No module specific data is present
Dec 01 02:25:02.074 INFO running `"docker" "inspect" "2e7c7de33fae074e503453d82e622230f92c7bab9de9a9dc48660063c73b16f9"`
Dec 01 02:25:02.192 INFO running `"docker" "rm" "-f" "2e7c7de33fae074e503453d82e622230f92c7bab9de9a9dc48660063c73b16f9"`
Dec 01 02:25:02.283 INFO [stdout] 2e7c7de33fae074e503453d82e622230f92c7bab9de9a9dc48660063c73b16f9
Dec 01 02:25:02.288 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 02:25:02.535 INFO [stdout] c13516894eac3400160b5424144fe62e003ce9fa3901831b99c14934321ee24d
Dec 01 02:25:02.543 INFO running `"docker" "start" "-a" "c13516894eac3400160b5424144fe62e003ce9fa3901831b99c14934321ee24d"`
Dec 01 02:25:03.200 INFO [stderr] usermod: no changes
Dec 01 02:25:03.222 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Dec 01 02:25:03.222 INFO [stderr]      Running /target/debug/deps/ownership-464b6bbbe03ef08c
Dec 01 02:25:03.224 INFO [stdout] 
Dec 01 02:25:03.224 INFO [stdout] running 0 tests
Dec 01 02:25:03.224 INFO [stdout] 
Dec 01 02:25:03.224 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 02:25:03.224 INFO [stdout] 
Dec 01 02:25:03.225 INFO [stderr] su: No module specific data is present
Dec 01 02:25:03.520 INFO running `"docker" "inspect" "c13516894eac3400160b5424144fe62e003ce9fa3901831b99c14934321ee24d"`
Dec 01 02:25:03.671 INFO running `"docker" "rm" "-f" "c13516894eac3400160b5424144fe62e003ce9fa3901831b99c14934321ee24d"`
Dec 01 02:25:03.816 INFO [stdout] c13516894eac3400160b5424144fe62e003ce9fa3901831b99c14934321ee24d
