Nov 27 20:28:07.542 INFO checking sikkiv/rust-samples against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 27 20:28:07.542 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-5/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 27 20:28:07.854 INFO [stdout] ab95353f1df17020373ddc9210b5a1c7ff276ce1838c91b6ca6797a6dcca142e
Nov 27 20:28:07.858 INFO running `"docker" "start" "-a" "ab95353f1df17020373ddc9210b5a1c7ff276ce1838c91b6ca6797a6dcca142e"`
Nov 27 20:28:08.277 INFO [stderr] usermod: no changes
Nov 27 20:28:08.316 INFO [stderr]     Checking ownership v0.1.0 (/source)
Nov 27 20:28:08.624 INFO [stderr] warning: unused variable: `fancy`
Nov 27 20:28:08.624 INFO [stderr]    --> src/main.rs:642:30
Nov 27 20:28:08.624 INFO [stderr]     |
Nov 27 20:28:08.624 INFO [stderr] 642 |             let capturing = |fancy| test;
Nov 27 20:28:08.624 INFO [stderr]     |                              ^^^^^ help: consider using `_fancy` instead
Nov 27 20:28:08.624 INFO [stderr]     |
Nov 27 20:28:08.624 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 27 20:28:08.625 INFO [stderr] 
Nov 27 20:28:08.625 INFO [stderr] warning: unused variable: `scope_valid`
Nov 27 20:28:08.625 INFO [stderr]  --> src/main.rs:7:13
Nov 27 20:28:08.625 INFO [stderr]   |
Nov 27 20:28:08.625 INFO [stderr] 7 |         let scope_valid = "here it's valid";
Nov 27 20:28:08.625 INFO [stderr]   |             ^^^^^^^^^^^ help: consider using `_scope_valid` instead
Nov 27 20:28:08.625 INFO [stderr] 
Nov 27 20:28:08.625 INFO [stderr] warning: unused variable: `s1`
Nov 27 20:28:08.625 INFO [stderr]   --> src/main.rs:33:13
Nov 27 20:28:08.625 INFO [stderr]    |
Nov 27 20:28:08.625 INFO [stderr] 33 |         let s1 = s;
Nov 27 20:28:08.625 INFO [stderr]    |             ^^ help: consider using `_s1` instead
Nov 27 20:28:08.625 INFO [stderr] 
Nov 27 20:28:08.625 INFO [stderr] warning: unused variable: `u`
Nov 27 20:28:08.625 INFO [stderr]   --> src/main.rs:68:13
Nov 27 20:28:08.625 INFO [stderr]    |
Nov 27 20:28:08.625 INFO [stderr] 68 |         let u = calculate_length(&s1);
Nov 27 20:28:08.625 INFO [stderr]    |             ^ help: consider using `_u` instead
Nov 27 20:28:08.626 INFO [stderr] 
Nov 27 20:28:08.626 INFO [stderr] warning: unused variable: `r1`
Nov 27 20:28:08.626 INFO [stderr]    --> src/main.rs:104:17
Nov 27 20:28:08.626 INFO [stderr]     |
Nov 27 20:28:08.626 INFO [stderr] 104 |             let r1 = &mut s;
Nov 27 20:28:08.626 INFO [stderr]     |                 ^^ help: consider using `_r1` instead
Nov 27 20:28:08.626 INFO [stderr] 
Nov 27 20:28:08.626 INFO [stderr] warning: unused variable: `r3`
Nov 27 20:28:08.626 INFO [stderr]    --> src/main.rs:107:13
Nov 27 20:28:08.626 INFO [stderr]     |
Nov 27 20:28:08.626 INFO [stderr] 107 |         let r3 = &mut s;
Nov 27 20:28:08.626 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 27 20:28:08.626 INFO [stderr] 
Nov 27 20:28:08.626 INFO [stderr] warning: unused variable: `reference_to_something`
Nov 27 20:28:08.626 INFO [stderr]    --> src/main.rs:129:13
Nov 27 20:28:08.626 INFO [stderr]     |
Nov 27 20:28:08.626 INFO [stderr] 129 |         let reference_to_something = no_dangle();
Nov 27 20:28:08.626 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_reference_to_something` instead
Nov 27 20:28:08.626 INFO [stderr] 
Nov 27 20:28:08.626 INFO [stderr] warning: unused variable: `first`
Nov 27 20:28:08.626 INFO [stderr]    --> src/main.rs:138:13
Nov 27 20:28:08.626 INFO [stderr]     |
Nov 27 20:28:08.627 INFO [stderr] 138 |         let first = &s[0..5];
Nov 27 20:28:08.627 INFO [stderr]     |             ^^^^^ help: consider using `_first` instead
Nov 27 20:28:08.627 INFO [stderr] 
Nov 27 20:28:08.627 INFO [stderr] warning: unused variable: `second`
Nov 27 20:28:08.627 INFO [stderr]    --> src/main.rs:141:13
Nov 27 20:28:08.627 INFO [stderr]     |
Nov 27 20:28:08.627 INFO [stderr] 141 |         let second = &s[6..11];
Nov 27 20:28:08.627 INFO [stderr]     |             ^^^^^^ help: consider using `_second` instead
Nov 27 20:28:08.627 INFO [stderr] 
Nov 27 20:28:08.627 INFO [stderr] warning: unused variable: `s1`
Nov 27 20:28:08.627 INFO [stderr]    --> src/main.rs:146:13
Nov 27 20:28:08.627 INFO [stderr]     |
Nov 27 20:28:08.627 INFO [stderr] 146 |         let s1 = "Hello world!"; // is a slice pointing to the memory in the binary
Nov 27 20:28:08.627 INFO [stderr]     |             ^^ help: consider using `_s1` instead
Nov 27 20:28:08.627 INFO [stderr] 
Nov 27 20:28:08.627 INFO [stderr] warning: unused variable: `third_test`
Nov 27 20:28:08.627 INFO [stderr]    --> src/main.rs:184:13
Nov 27 20:28:08.627 INFO [stderr]     |
Nov 27 20:28:08.627 INFO [stderr] 184 |         let third_test = MyCustomObject {
Nov 27 20:28:08.627 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_third_test` instead
Nov 27 20:28:08.628 INFO [stderr] 
Nov 27 20:28:08.628 INFO [stderr] warning: unused variable: `point`
Nov 27 20:28:08.628 INFO [stderr]    --> src/main.rs:192:13
Nov 27 20:28:08.632 INFO [stderr]     |
Nov 27 20:28:08.632 INFO [stderr] 192 |         let point = Point(0, 0, 0);
Nov 27 20:28:08.632 INFO [stderr]     |             ^^^^^ help: consider using `_point` instead
Nov 27 20:28:08.632 INFO [stderr] 
Nov 27 20:28:08.632 INFO [stderr] warning: unused variable: `home`
Nov 27 20:28:08.632 INFO [stderr]    --> src/main.rs:221:17
Nov 27 20:28:08.632 INFO [stderr]     |
Nov 27 20:28:08.632 INFO [stderr] 221 |             let home = IpAddr::V4(String::from("127.0.0.1"));
Nov 27 20:28:08.632 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Nov 27 20:28:08.632 INFO [stderr] 
Nov 27 20:28:08.633 INFO [stderr] warning: unused variable: `loopback`
Nov 27 20:28:08.633 INFO [stderr]    --> src/main.rs:222:17
Nov 27 20:28:08.633 INFO [stderr]     |
Nov 27 20:28:08.633 INFO [stderr] 222 |             let loopback = IpAddr::V6(String::from("::1"));
Nov 27 20:28:08.633 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Nov 27 20:28:08.633 INFO [stderr] 
Nov 27 20:28:08.633 INFO [stderr] warning: unused variable: `home`
Nov 27 20:28:08.633 INFO [stderr]    --> src/main.rs:232:17
Nov 27 20:28:08.633 INFO [stderr]     |
Nov 27 20:28:08.633 INFO [stderr] 232 |             let home = IpAddr::V4(127, 0, 0, 1);
Nov 27 20:28:08.633 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Nov 27 20:28:08.633 INFO [stderr] 
Nov 27 20:28:08.633 INFO [stderr] warning: unused variable: `loopback`
Nov 27 20:28:08.633 INFO [stderr]    --> src/main.rs:233:17
Nov 27 20:28:08.633 INFO [stderr]     |
Nov 27 20:28:08.633 INFO [stderr] 233 |             let loopback = IpAddr::V6(String::from("::1"));
Nov 27 20:28:08.633 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Nov 27 20:28:08.633 INFO [stderr] 
Nov 27 20:28:08.633 INFO [stderr] warning: unused variable: `some_number`
Nov 27 20:28:08.633 INFO [stderr]    --> src/main.rs:241:17
Nov 27 20:28:08.633 INFO [stderr]     |
Nov 27 20:28:08.633 INFO [stderr] 241 |             let some_number = Some(5);
Nov 27 20:28:08.634 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_number` instead
Nov 27 20:28:08.634 INFO [stderr] 
Nov 27 20:28:08.634 INFO [stderr] warning: unused variable: `some_string`
Nov 27 20:28:08.634 INFO [stderr]    --> src/main.rs:242:17
Nov 27 20:28:08.634 INFO [stderr]     |
Nov 27 20:28:08.634 INFO [stderr] 242 |             let some_string = Some("hello");
Nov 27 20:28:08.634 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_string` instead
Nov 27 20:28:08.640 INFO [stderr] 
Nov 27 20:28:08.640 INFO [stderr] warning: unused variable: `absent_number`
Nov 27 20:28:08.640 INFO [stderr]    --> src/main.rs:243:17
Nov 27 20:28:08.640 INFO [stderr]     |
Nov 27 20:28:08.640 INFO [stderr] 243 |             let absent_number: Option<i32> = None; // here we have to explicitly state the type because no infering mechanism possible
Nov 27 20:28:08.640 INFO [stderr]     |                 ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Nov 27 20:28:08.640 INFO [stderr] 
Nov 27 20:28:08.640 INFO [stderr] warning: unused variable: `six`
Nov 27 20:28:08.640 INFO [stderr]    --> src/main.rs:309:17
Nov 27 20:28:08.640 INFO [stderr]     |
Nov 27 20:28:08.640 INFO [stderr] 309 |             let six = plus_one(five);
Nov 27 20:28:08.641 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Nov 27 20:28:08.641 INFO [stderr] 
Nov 27 20:28:08.641 INFO [stderr] warning: unused variable: `none`
Nov 27 20:28:08.641 INFO [stderr]    --> src/main.rs:310:17
Nov 27 20:28:08.641 INFO [stderr]     |
Nov 27 20:28:08.641 INFO [stderr] 310 |             let none = plus_one(None);
Nov 27 20:28:08.641 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Nov 27 20:28:08.641 INFO [stderr] 
Nov 27 20:28:08.641 INFO [stderr] warning: unused variable: `six`
Nov 27 20:28:08.641 INFO [stderr]    --> src/main.rs:324:17
Nov 27 20:28:08.641 INFO [stderr]     |
Nov 27 20:28:08.641 INFO [stderr] 324 |             let six = plus_one(five);
Nov 27 20:28:08.641 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Nov 27 20:28:08.641 INFO [stderr] 
Nov 27 20:28:08.641 INFO [stderr] warning: unused variable: `none`
Nov 27 20:28:08.641 INFO [stderr]    --> src/main.rs:325:17
Nov 27 20:28:08.641 INFO [stderr]     |
Nov 27 20:28:08.641 INFO [stderr] 325 |             let none = plus_one(None);
Nov 27 20:28:08.641 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Nov 27 20:28:08.641 INFO [stderr] 
Nov 27 20:28:08.641 INFO [stderr] warning: unused variable: `my_vec`
Nov 27 20:28:08.642 INFO [stderr]    --> src/main.rs:353:17
Nov 27 20:28:08.642 INFO [stderr]     |
Nov 27 20:28:08.642 INFO [stderr] 353 |             let my_vec = vec![1, 2, 3];
Nov 27 20:28:08.642 INFO [stderr]     |                 ^^^^^^ help: consider using `_my_vec` instead
Nov 27 20:28:08.642 INFO [stderr] 
Nov 27 20:28:08.642 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.648 INFO [stderr]    --> src/main.rs:361:17
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 361 |             let f = match f {
Nov 27 20:28:08.649 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.649 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.649 INFO [stderr]    --> src/main.rs:366:17
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 366 |             let f = match File::open("test.txt") {
Nov 27 20:28:08.649 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.649 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.649 INFO [stderr]    --> src/main.rs:373:17
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 373 |             let f = match File::open("ksdfksd.txt") {
Nov 27 20:28:08.649 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.649 INFO [stderr] warning: unused variable: `e`
Nov 27 20:28:08.649 INFO [stderr]    --> src/main.rs:380:29
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 380 |                         Err(e) => panic!(
Nov 27 20:28:08.649 INFO [stderr]     |                             ^ help: consider using `_e` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.649 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.649 INFO [stderr]    --> src/main.rs:398:17
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 398 |             let f = File::open("something-that-does-not-exist.txt").unwrap();
Nov 27 20:28:08.649 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.649 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.649 INFO [stderr]    --> src/main.rs:401:17
Nov 27 20:28:08.649 INFO [stderr]     |
Nov 27 20:28:08.649 INFO [stderr] 401 |             let f = File::open("kskiefi.txt").expect("failed opening the file xxx");
Nov 27 20:28:08.649 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.649 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `integer`
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:438:17
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 438 |             let integer = Point { x: 5, y: 10 };
Nov 27 20:28:08.650 INFO [stderr]     |                 ^^^^^^^ help: consider using `_integer` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `float`
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:439:17
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 439 |             let float = Point { x: 0.5, y: 1.4 };
Nov 27 20:28:08.650 INFO [stderr]     |                 ^^^^^ help: consider using `_float` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `mixed_int_float`
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:449:17
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 449 |             let mixed_int_float = MixedPoint { x: 5, y: 1.0 };
Nov 27 20:28:08.650 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_mixed_int_float` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `closure_runs_with_captured_value`
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:643:17
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 643 |             let closure_runs_with_captured_value = capturing(1);
Nov 27 20:28:08.650 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_closure_runs_with_captured_value` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `s`
Nov 27 20:28:08.650 INFO [stderr]   --> src/main.rs:78:19
Nov 27 20:28:08.650 INFO [stderr]    |
Nov 27 20:28:08.650 INFO [stderr] 78 |         fn change(s: &String) {
Nov 27 20:28:08.650 INFO [stderr]    |                   ^ help: consider using `_s` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: unused variable: `item`
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:505:39
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Nov 27 20:28:08.650 INFO [stderr]     |                                       ^^^^ help: consider using `_item` instead
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.650 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:28:08.650 INFO [stderr]    --> src/main.rs:655:17
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr] 655 |             let mut v_iter = v.iter();
Nov 27 20:28:08.650 INFO [stderr]     |                 ----^^^^^^
Nov 27 20:28:08.650 INFO [stderr]     |                 |
Nov 27 20:28:08.650 INFO [stderr]     |                 help: remove this `mut`
Nov 27 20:28:08.650 INFO [stderr]     |
Nov 27 20:28:08.650 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 27 20:28:08.650 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `fancy`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:642:30
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 642 |             let capturing = |fancy| test;
Nov 27 20:28:08.657 INFO [stderr]     |                              ^^^^^ help: consider using `_fancy` instead
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `scope_valid`
Nov 27 20:28:08.657 INFO [stderr]  --> src/main.rs:7:13
Nov 27 20:28:08.657 INFO [stderr]   |
Nov 27 20:28:08.657 INFO [stderr] 7 |         let scope_valid = "here it's valid";
Nov 27 20:28:08.657 INFO [stderr]   |             ^^^^^^^^^^^ help: consider using `_scope_valid` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `s1`
Nov 27 20:28:08.657 INFO [stderr]   --> src/main.rs:33:13
Nov 27 20:28:08.657 INFO [stderr]    |
Nov 27 20:28:08.657 INFO [stderr] 33 |         let s1 = s;
Nov 27 20:28:08.657 INFO [stderr]    |             ^^ help: consider using `_s1` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `u`
Nov 27 20:28:08.657 INFO [stderr]   --> src/main.rs:68:13
Nov 27 20:28:08.657 INFO [stderr]    |
Nov 27 20:28:08.657 INFO [stderr] 68 |         let u = calculate_length(&s1);
Nov 27 20:28:08.657 INFO [stderr]    |             ^ help: consider using `_u` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `r1`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:104:17
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 104 |             let r1 = &mut s;
Nov 27 20:28:08.657 INFO [stderr]     |                 ^^ help: consider using `_r1` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `r3`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:107:13
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 107 |         let r3 = &mut s;
Nov 27 20:28:08.657 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `reference_to_something`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:129:13
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 129 |         let reference_to_something = no_dangle();
Nov 27 20:28:08.657 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_reference_to_something` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `first`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:138:13
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 138 |         let first = &s[0..5];
Nov 27 20:28:08.657 INFO [stderr]     |             ^^^^^ help: consider using `_first` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.657 INFO [stderr] warning: unused variable: `second`
Nov 27 20:28:08.657 INFO [stderr]    --> src/main.rs:141:13
Nov 27 20:28:08.657 INFO [stderr]     |
Nov 27 20:28:08.657 INFO [stderr] 141 |         let second = &s[6..11];
Nov 27 20:28:08.657 INFO [stderr]     |             ^^^^^^ help: consider using `_second` instead
Nov 27 20:28:08.657 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `s1`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:146:13
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 146 |         let s1 = "Hello world!"; // is a slice pointing to the memory in the binary
Nov 27 20:28:08.658 INFO [stderr]     |             ^^ help: consider using `_s1` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `third_test`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:184:13
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 184 |         let third_test = MyCustomObject {
Nov 27 20:28:08.658 INFO [stderr]     |             ^^^^^^^^^^ help: consider using `_third_test` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `point`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:192:13
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 192 |         let point = Point(0, 0, 0);
Nov 27 20:28:08.658 INFO [stderr]     |             ^^^^^ help: consider using `_point` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `home`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:221:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 221 |             let home = IpAddr::V4(String::from("127.0.0.1"));
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `loopback`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:222:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 222 |             let loopback = IpAddr::V6(String::from("::1"));
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `home`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:232:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 232 |             let home = IpAddr::V4(127, 0, 0, 1);
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^ help: consider using `_home` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `loopback`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:233:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 233 |             let loopback = IpAddr::V6(String::from("::1"));
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^^^^^ help: consider using `_loopback` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `some_number`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:241:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 241 |             let some_number = Some(5);
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_number` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `some_string`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:242:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 242 |             let some_string = Some("hello");
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^^^^^^^^ help: consider using `_some_string` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `absent_number`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:243:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 243 |             let absent_number: Option<i32> = None; // here we have to explicitly state the type because no infering mechanism possible
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `six`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:309:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 309 |             let six = plus_one(five);
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `none`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:310:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 310 |             let none = plus_one(None);
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.658 INFO [stderr] warning: unused variable: `six`
Nov 27 20:28:08.658 INFO [stderr]    --> src/main.rs:324:17
Nov 27 20:28:08.658 INFO [stderr]     |
Nov 27 20:28:08.658 INFO [stderr] 324 |             let six = plus_one(five);
Nov 27 20:28:08.658 INFO [stderr]     |                 ^^^ help: consider using `_six` instead
Nov 27 20:28:08.658 INFO [stderr] 
Nov 27 20:28:08.659 INFO [stderr] warning: unused variable: `none`
Nov 27 20:28:08.659 INFO [stderr]    --> src/main.rs:325:17
Nov 27 20:28:08.659 INFO [stderr]     |
Nov 27 20:28:08.659 INFO [stderr] 325 |             let none = plus_one(None);
Nov 27 20:28:08.659 INFO [stderr]     |                 ^^^^ help: consider using `_none` instead
Nov 27 20:28:08.659 INFO [stderr] 
Nov 27 20:28:08.659 INFO [stderr] warning: unused variable: `my_vec`
Nov 27 20:28:08.659 INFO [stderr]    --> src/main.rs:353:17
Nov 27 20:28:08.659 INFO [stderr]     |
Nov 27 20:28:08.659 INFO [stderr] 353 |             let my_vec = vec![1, 2, 3];
Nov 27 20:28:08.659 INFO [stderr]     |                 ^^^^^^ help: consider using `_my_vec` instead
Nov 27 20:28:08.659 INFO [stderr] 
Nov 27 20:28:08.659 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.659 INFO [stderr]    --> src/main.rs:361:17
Nov 27 20:28:08.659 INFO [stderr]     |
Nov 27 20:28:08.659 INFO [stderr] 361 |             let f = match f {
Nov 27 20:28:08.659 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.659 INFO [stderr] 
Nov 27 20:28:08.659 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.659 INFO [stderr]    --> src/main.rs:366:17
Nov 27 20:28:08.659 INFO [stderr]     |
Nov 27 20:28:08.659 INFO [stderr] 366 |             let f = match File::open("test.txt") {
Nov 27 20:28:08.659 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.659 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:373:17
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr] 373 |             let f = match File::open("ksdfksd.txt") {
Nov 27 20:28:08.664 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.664 INFO [stderr] warning: function is never used: `build_user`
Nov 27 20:28:08.664 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:176:9
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr] 176 |         fn build_user(name: String, active: bool) -> MyCustomObject {
Nov 27 20:28:08.664 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 27 20:28:08.664 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr] warning: unused variable: `e`
Nov 27 20:28:08.664 INFO [stderr] warning: variant is never constructed: `Special`
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:249:17
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr] 249 |                 Special,
Nov 27 20:28:08.664 INFO [stderr]     |                 ^^^^^^^
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:380:29
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr] 380 |                         Err(e) => panic!(
Nov 27 20:28:08.664 INFO [stderr]     |                             ^ help: consider using `_e` instead
Nov 27 20:28:08.664 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr] warning: variant is never constructed: `Nothing`
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:251:17
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.664 INFO [stderr] 251 |                 Nothing,
Nov 27 20:28:08.664 INFO [stderr]     |                 ^^^^^^^
Nov 27 20:28:08.664 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr] 
Nov 27 20:28:08.664 INFO [stderr] warning: variant is never constructed: `Boring`
Nov 27 20:28:08.664 INFO [stderr]    --> src/main.rs:252:17
Nov 27 20:28:08.664 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 252 |                 Boring,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: variant is never constructed: `Active`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:278:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 278 |                 Active,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^^^
Nov 27 20:28:08.665 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:398:17
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 398 |             let f = File::open("something-that-does-not-exist.txt").unwrap();
Nov 27 20:28:08.665 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.665 INFO [stderr] warning: variant is never constructed: `IBM`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:282:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 282 |                 IBM,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: variant is never constructed: `PowerPC`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:283:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 283 |                 PowerPC,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: function is never used: `read_username_from_file`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:411:13
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 411 |             fn read_username_from_file() -> Result<String, io::Error> {
Nov 27 20:28:08.665 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: unused variable: `f`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:401:17
Nov 27 20:28:08.665 INFO [stderr] warning: function is never used: `read_something_from_file`
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:422:13
Nov 27 20:28:08.665 INFO [stderr] 401 |             let f = File::open("kskiefi.txt").expect("failed opening the file xxx");
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr]     |                 ^ help: consider using `_f` instead
Nov 27 20:28:08.665 INFO [stderr] 422 |             fn read_something_from_file() -> Result<String, io::Error> {
Nov 27 20:28:08.665 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: field is never used: `x`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:434:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 434 |                 x: T,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: field is never used: `y`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:435:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 435 |                 y: T,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: field is never used: `x`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:445:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 445 |                 x: T,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: unused variable: `integer`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:438:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 438 |             let integer = Point { x: 5, y: 10 };
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^^^^ help: consider using `_integer` instead
Nov 27 20:28:08.665 INFO [stderr] warning: field is never used: `y`
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:446:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.665 INFO [stderr] 446 |                 y: U,
Nov 27 20:28:08.665 INFO [stderr]     |                 ^^^^
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr] warning: method is never used: `x`
Nov 27 20:28:08.665 INFO [stderr] 
Nov 27 20:28:08.665 INFO [stderr]    --> src/main.rs:454:17
Nov 27 20:28:08.665 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 454 |                 fn x(&self) -> &T {
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: method is never used: `distance_from_origin`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:461:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 461 |                 fn distance_from_origin(&self) -> f32 {
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: unused variable: `float`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:439:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 439 |             let float = Point { x: 0.5, y: 1.4 };
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^ help: consider using `_float` instead
Nov 27 20:28:08.666 INFO [stderr] warning: method is never used: `mixup`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:469:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 469 |                 fn mixup<V, W>(self, other: MixedPoint<V, W>) -> MixedPoint<T, W> {
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: struct is never constructed: `Tweet`
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:486:13
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 486 |             pub struct Tweet {
Nov 27 20:28:08.666 INFO [stderr]     |             ^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: function is never used: `notify`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:505:13
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Nov 27 20:28:08.666 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: struct is never constructed: `Pair`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:526:13
Nov 27 20:28:08.666 INFO [stderr] warning: unused variable: `mixed_int_float`
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:449:17
Nov 27 20:28:08.666 INFO [stderr] 526 |             struct Pair<T> {
Nov 27 20:28:08.666 INFO [stderr]     |             ^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 449 |             let mixed_int_float = MixedPoint { x: 5, y: 1.0 };
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_mixed_int_float` instead
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: method is never used: `new`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:532:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 532 |                 fn new(x: T, y: T) -> Self {
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: method is never used: `cmp_display`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:538:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 538 |                 fn cmp_display(&self) {
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: function is never used: `longest`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:573:13
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 573 |             fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Nov 27 20:28:08.666 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: unused variable: `closure_runs_with_captured_value`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:643:17
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 643 |             let closure_runs_with_captured_value = capturing(1);
Nov 27 20:28:08.666 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_closure_runs_with_captured_value` instead
Nov 27 20:28:08.666 INFO [stderr] 
Nov 27 20:28:08.666 INFO [stderr] warning: struct is never constructed: `Test`
Nov 27 20:28:08.666 INFO [stderr]    --> src/main.rs:633:13
Nov 27 20:28:08.666 INFO [stderr]     |
Nov 27 20:28:08.666 INFO [stderr] 633 | /             struct Test<T>
Nov 27 20:28:08.666 INFO [stderr] 634 | |             where
Nov 27 20:28:08.666 INFO [stderr] 635 | |                 T: Fn(u32) -> u32,
Nov 27 20:28:08.666 INFO [stderr] 636 | |             {
Nov 27 20:28:08.667 INFO [stderr] 637 | |                 closure_within_struct: T,
Nov 27 20:28:08.667 INFO [stderr] 638 | |                 some_other_value: Option<u32>,
Nov 27 20:28:08.667 INFO [stderr] 639 | |             }
Nov 27 20:28:08.667 INFO [stderr]     | |_____________^
Nov 27 20:28:08.667 INFO [stderr] 
Nov 27 20:28:08.667 INFO [stderr] warning: unused variable: `s`
Nov 27 20:28:08.667 INFO [stderr]   --> src/main.rs:78:19
Nov 27 20:28:08.667 INFO [stderr]    |
Nov 27 20:28:08.667 INFO [stderr] 78 |         fn change(s: &String) {
Nov 27 20:28:08.667 INFO [stderr]    |                   ^ help: consider using `_s` instead
Nov 27 20:28:08.667 INFO [stderr] 
Nov 27 20:28:08.667 INFO [stderr] warning: unused variable: `item`
Nov 27 20:28:08.667 INFO [stderr]    --> src/main.rs:505:39
Nov 27 20:28:08.667 INFO [stderr]     |
Nov 27 20:28:08.667 INFO [stderr] 505 |             pub fn notify<T: Summary>(item: T) {
Nov 27 20:28:08.667 INFO [stderr]     |                                       ^^^^ help: consider using `_item` instead
Nov 27 20:28:08.667 INFO [stderr] 
Nov 27 20:28:08.684 INFO [stderr] warning: variable does not need to be mutable
Nov 27 20:28:08.684 INFO [stderr]    --> src/main.rs:655:17
Nov 27 20:28:08.684 INFO [stderr]     |
Nov 27 20:28:08.684 INFO [stderr] 655 |             let mut v_iter = v.iter();
Nov 27 20:28:08.684 INFO [stderr]     |                 ----^^^^^^
Nov 27 20:28:08.684 INFO [stderr]     |                 |
Nov 27 20:28:08.684 INFO [stderr]     |                 help: remove this `mut`
Nov 27 20:28:08.684 INFO [stderr]     |
Nov 27 20:28:08.684 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 27 20:28:08.684 INFO [stderr] 
Nov 27 20:28:08.699 INFO [stderr] warning: cannot test inner items
Nov 27 20:28:08.699 INFO [stderr]    --> src/main.rs:593:13
Nov 27 20:28:08.699 INFO [stderr]     |
Nov 27 20:28:08.699 INFO [stderr] 593 |             #[test]
Nov 27 20:28:08.699 INFO [stderr]     |             ^^^^^^^
Nov 27 20:28:08.700 INFO [stderr]     |
Nov 27 20:28:08.700 INFO [stderr]     = note: #[warn(unnameable_test_items)] on by default
Nov 27 20:28:08.700 INFO [stderr] 
Nov 27 20:28:08.700 INFO [stderr] warning: cannot test inner items
Nov 27 20:28:08.700 INFO [stderr]    --> src/main.rs:599:13
Nov 27 20:28:08.700 INFO [stderr]     |
Nov 27 20:28:08.700 INFO [stderr] 599 |             #[test]
Nov 27 20:28:08.700 INFO [stderr]     |             ^^^^^^^
Nov 27 20:28:08.700 INFO [stderr] 
Nov 27 20:28:08.702 INFO [stderr] warning: cannot test inner items
Nov 27 20:28:08.702 INFO [stderr]    --> src/main.rs:610:13
Nov 27 20:28:08.702 INFO [stderr]     |
Nov 27 20:28:08.702 INFO [stderr] 610 |             #[test]
Nov 27 20:28:08.702 INFO [stderr]     |             ^^^^^^^
Nov 27 20:28:08.702 INFO [stderr] 
Nov 27 20:28:08.717 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Nov 27 20:28:08.717 INFO [stderr] su: No module specific data is present
Nov 27 20:28:09.097 INFO running `"docker" "inspect" "ab95353f1df17020373ddc9210b5a1c7ff276ce1838c91b6ca6797a6dcca142e"`
Nov 27 20:28:09.404 INFO running `"docker" "rm" "-f" "ab95353f1df17020373ddc9210b5a1c7ff276ce1838c91b6ca6797a6dcca142e"`
Nov 27 20:28:09.682 INFO [stdout] ab95353f1df17020373ddc9210b5a1c7ff276ce1838c91b6ca6797a6dcca142e