Oct 27 01:20:34.566 INFO checking lucke84/playing_around_with_rust against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 01:20:34.568 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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"`
Oct 27 01:20:34.995 INFO blam! 779bcf5d0cc650091c54d88a8657ab29600870c74ce1dad37c9d442aa35eef8e
Oct 27 01:20:35.003 INFO running `"docker" "start" "-a" "779bcf5d0cc650091c54d88a8657ab29600870c74ce1dad37c9d442aa35eef8e"`
Oct 27 01:20:36.566 INFO kablam! usermod: no changes
Oct 27 01:20:36.643 INFO kablam!     Checking playing_around_with_rust v0.0.1 (/source)
Oct 27 01:20:37.021 INFO kablam! warning: unnecessary parentheses around assigned value
Oct 27 01:20:37.021 INFO kablam!   --> src/main.rs:37:13
Oct 27 01:20:37.022 INFO kablam!    |
Oct 27 01:20:37.022 INFO kablam! 37 |     let j = (i = 6);                            // the value of an assignment is an empty tuple: so j has the value (), not 6
Oct 27 01:20:37.022 INFO kablam!    |             ^^^^^^^ help: remove these parentheses
Oct 27 01:20:37.022 INFO kablam!    |
Oct 27 01:20:37.022 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 27 01:20:37.022 INFO kablam! 
Oct 27 01:20:37.086 INFO kablam! warning: unreachable expression
Oct 27 01:20:37.086 INFO kablam!    --> src/main.rs:137:5
Oct 27 01:20:37.086 INFO kablam!     |
Oct 27 01:20:37.086 INFO kablam! 137 |     x                                           // never executed
Oct 27 01:20:37.086 INFO kablam!     |     ^
Oct 27 01:20:37.087 INFO kablam!     |
Oct 27 01:20:37.087 INFO kablam!     = note: #[warn(unreachable_code)] on by default
Oct 27 01:20:37.087 INFO kablam! 
Oct 27 01:20:37.087 INFO kablam! warning: unused variable: `a`
Oct 27 01:20:37.087 INFO kablam!  --> src/main.rs:7:9
Oct 27 01:20:37.087 INFO kablam!   |
Oct 27 01:20:37.087 INFO kablam! 7 |     let a = 1;                                  // type i32 is infered
Oct 27 01:20:37.087 INFO kablam!   |         ^ help: consider using `_a` instead
Oct 27 01:20:37.087 INFO kablam!   |
Oct 27 01:20:37.087 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 27 01:20:37.087 INFO kablam! 
Oct 27 01:20:37.087 INFO kablam! warning: unused variable: `b`
Oct 27 01:20:37.087 INFO kablam!  --> src/main.rs:8:9
Oct 27 01:20:37.087 INFO kablam!   |
Oct 27 01:20:37.087 INFO kablam! 8 |     let b: i32 = 2;                             // type i32 is explicitly declared
Oct 27 01:20:37.087 INFO kablam!   |         ^ help: consider using `_b` instead
Oct 27 01:20:37.087 INFO kablam! 
Oct 27 01:20:37.091 INFO kablam! warning: unused variable: `c`
Oct 27 01:20:37.092 INFO kablam!   --> src/main.rs:10:10
Oct 27 01:20:37.092 INFO kablam!    |
Oct 27 01:20:37.092 INFO kablam! 10 |     let (c, d) = (3, 4);                        // variable bindings of multiple vars at the same time
Oct 27 01:20:37.092 INFO kablam!    |          ^ help: consider using `_c` instead
Oct 27 01:20:37.092 INFO kablam! 
Oct 27 01:20:37.092 INFO kablam! warning: unused variable: `d`
Oct 27 01:20:37.092 INFO kablam!   --> src/main.rs:10:13
Oct 27 01:20:37.092 INFO kablam!    |
Oct 27 01:20:37.092 INFO kablam! 10 |     let (c, d) = (3, 4);                        // variable bindings of multiple vars at the same time
Oct 27 01:20:37.092 INFO kablam!    |             ^ help: consider using `_d` instead
Oct 27 01:20:37.092 INFO kablam! 
Oct 27 01:20:37.092 INFO kablam! warning: unused variable: `e`
Oct 27 01:20:37.092 INFO kablam!   --> src/main.rs:12:9
Oct 27 01:20:37.092 INFO kablam!    |
Oct 27 01:20:37.092 INFO kablam! 12 |     let e: i32;
Oct 27 01:20:37.092 INFO kablam!    |         ^ help: consider using `_e` instead
Oct 27 01:20:37.092 INFO kablam! 
Oct 27 01:20:37.092 INFO kablam! warning: variable `f` is assigned to, but never used
Oct 27 01:20:37.092 INFO kablam!   --> src/main.rs:18:13
Oct 27 01:20:37.092 INFO kablam!    |
Oct 27 01:20:37.092 INFO kablam! 18 |     let mut f = 5;                              // make variable mutable
Oct 27 01:20:37.093 INFO kablam!    |             ^
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam!    = note: consider using `_f` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: value assigned to `f` is never read
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:19:5
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 19 |     f = 6;                                      // now I can assign a new value (of the same type!) to this variable
Oct 27 01:20:37.093 INFO kablam!    |     ^
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `f`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:20:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 20 |     let f = "Look, I am text now";              // shadowing, and changing type!
Oct 27 01:20:37.093 INFO kablam!    |         ^ help: consider using `_f` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: value assigned to `i` is never read
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:36:13
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 36 |     let mut i = 5;
Oct 27 01:20:37.093 INFO kablam!    |             ^
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `j`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:37:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 37 |     let j = (i = 6);                            // the value of an assignment is an empty tuple: so j has the value (), not 6
Oct 27 01:20:37.093 INFO kablam!    |         ^ help: consider using `_j` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `a_boolean`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:59:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 59 |     let a_boolean = true;                         // with inference
Oct 27 01:20:37.093 INFO kablam!    |         ^^^^^^^^^ help: consider using `_a_boolean` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `another_boolean`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:60:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 60 |     let another_boolean: bool = false;            // without inference
Oct 27 01:20:37.093 INFO kablam!    |         ^^^^^^^^^^^^^^^ help: consider using `_another_boolean` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `this_is_a_char`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:63:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 63 |     let this_is_a_char = 'x';                    // delimited by a single quote/tick
Oct 27 01:20:37.093 INFO kablam!    |         ^^^^^^^^^^^^^^ help: consider using `_this_is_a_char` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `two_hearts_char`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:64:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 64 |     let two_hearts_char = '💕';                   // any unicode char (due to the fact that they are UTF-32, all chars are 4 bytes instead of just 1)
Oct 27 01:20:37.093 INFO kablam!    |         ^^^^^^^^^^^^^^^ help: consider using `_two_hearts_char` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.093 INFO kablam! warning: unused variable: `an_integer`
Oct 27 01:20:37.093 INFO kablam!   --> src/main.rs:67:9
Oct 27 01:20:37.093 INFO kablam!    |
Oct 27 01:20:37.093 INFO kablam! 67 |     let an_integer = 42;                         // default with inference (type i32 - The 32-bit signed integer type)
Oct 27 01:20:37.093 INFO kablam!    |         ^^^^^^^^^^ help: consider using `_an_integer` instead
Oct 27 01:20:37.093 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `a_float`
Oct 27 01:20:37.095 INFO kablam!   --> src/main.rs:68:9
Oct 27 01:20:37.095 INFO kablam!    |
Oct 27 01:20:37.095 INFO kablam! 68 |     let a_float = 1.0;                           // default with inference (type f64 - The 64-bit floating point type)
Oct 27 01:20:37.095 INFO kablam!    |         ^^^^^^^ help: consider using `_a_float` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `complete_slice`
Oct 27 01:20:37.095 INFO kablam!   --> src/main.rs:99:9
Oct 27 01:20:37.095 INFO kablam!    |
Oct 27 01:20:37.095 INFO kablam! 99 |     let complete_slice = &mutable_array[..];                  // [5, 7, 3, 23, 11]
Oct 27 01:20:37.095 INFO kablam!    |         ^^^^^^^^^^^^^^ help: consider using `_complete_slice` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `partial_slice`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:100:9
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 100 |     let partial_slice = &mutable_array[1..3];                 // [7, 4] - from item at index 1 to item at index 3 (excluded)
Oct 27 01:20:37.095 INFO kablam!     |         ^^^^^^^^^^^^^ help: consider using `_partial_slice` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `from_item_till_end_slice`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:101:9
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 101 |     let from_item_till_end_slice = &mutable_array[1..];       // [7, 4, 23, 11]
Oct 27 01:20:37.095 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_from_item_till_end_slice` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `from_beginning_till_item_slice`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:102:9
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 102 |     let from_beginning_till_item_slice = &mutable_array[..2]; // [5, 7]
Oct 27 01:20:37.095 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_from_beginning_till_item_slice` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `tuple_one`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:106:9
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 106 |     let tuple_one = (1, "one");
Oct 27 01:20:37.095 INFO kablam!     |         ^^^^^^^^^ help: consider using `_tuple_one` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: value assigned to `tuple_xy` is never read
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:110:13
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 110 |     let mut tuple_xy = (0, "zero");
Oct 27 01:20:37.095 INFO kablam!     |             ^^^^^^^^
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `tuple_second_item`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:123:9
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 123 |     let tuple_second_item = tuple_xy.1;
Oct 27 01:20:37.095 INFO kablam!     |         ^^^^^^^^^^^^^^^^^ help: consider using `_tuple_second_item` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.095 INFO kablam! warning: unused variable: `x`
Oct 27 01:20:37.095 INFO kablam!    --> src/main.rs:135:22
Oct 27 01:20:37.095 INFO kablam!     |
Oct 27 01:20:37.095 INFO kablam! 135 | fn always_return_one(x: i32) -> i32 {
Oct 27 01:20:37.095 INFO kablam!     |                      ^ help: consider using `_x` instead
Oct 27 01:20:37.095 INFO kablam! 
Oct 27 01:20:37.114 INFO kablam! warning: variable does not need to be mutable
Oct 27 01:20:37.114 INFO kablam!   --> src/main.rs:87:9
Oct 27 01:20:37.114 INFO kablam!    |
Oct 27 01:20:37.114 INFO kablam! 87 |     let mut mutable_array = [1.5, 2.3, 3.0]; // type [f64; 3]
Oct 27 01:20:37.114 INFO kablam!    |         ----^^^^^^^^^^^^^
Oct 27 01:20:37.114 INFO kablam!    |         |
Oct 27 01:20:37.114 INFO kablam!    |         help: remove this `mut`
Oct 27 01:20:37.114 INFO kablam!    |
Oct 27 01:20:37.114 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 01:20:37.114 INFO kablam! 
Oct 27 01:20:37.114 INFO kablam! warning: function is never used: `diverges`
Oct 27 01:20:37.114 INFO kablam!    --> src/main.rs:140:1
Oct 27 01:20:37.114 INFO kablam!     |
Oct 27 01:20:37.114 INFO kablam! 140 | fn diverges() -> ! {                            // defines the return type as "diverges" using the bang symbol
Oct 27 01:20:37.114 INFO kablam!     | ^^^^^^^^^^^^^^^^^^
Oct 27 01:20:37.114 INFO kablam!     |
Oct 27 01:20:37.114 INFO kablam!     = note: #[warn(dead_code)] on by default
Oct 27 01:20:37.114 INFO kablam! 
Oct 27 01:20:37.392 INFO kablam! warning: unnecessary parentheses around assigned value
Oct 27 01:20:37.392 INFO kablam!   --> src/main.rs:37:13
Oct 27 01:20:37.392 INFO kablam!    |
Oct 27 01:20:37.392 INFO kablam! 37 |     let j = (i = 6);                            // the value of an assignment is an empty tuple: so j has the value (), not 6
Oct 27 01:20:37.392 INFO kablam!    |             ^^^^^^^ help: remove these parentheses
Oct 27 01:20:37.392 INFO kablam!    |
Oct 27 01:20:37.392 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 27 01:20:37.392 INFO kablam! 
Oct 27 01:20:37.424 INFO kablam! warning: unreachable expression
Oct 27 01:20:37.425 INFO kablam!    --> src/main.rs:137:5
Oct 27 01:20:37.425 INFO kablam!     |
Oct 27 01:20:37.425 INFO kablam! 137 |     x                                           // never executed
Oct 27 01:20:37.425 INFO kablam!     |     ^
Oct 27 01:20:37.425 INFO kablam!     |
Oct 27 01:20:37.425 INFO kablam!     = note: #[warn(unreachable_code)] on by default
Oct 27 01:20:37.425 INFO kablam! 
Oct 27 01:20:37.429 INFO kablam! warning: unused variable: `a`
Oct 27 01:20:37.429 INFO kablam!  --> src/main.rs:7:9
Oct 27 01:20:37.429 INFO kablam!   |
Oct 27 01:20:37.429 INFO kablam! 7 |     let a = 1;                                  // type i32 is infered
Oct 27 01:20:37.429 INFO kablam!   |         ^ help: consider using `_a` instead
Oct 27 01:20:37.429 INFO kablam!   |
Oct 27 01:20:37.429 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 27 01:20:37.429 INFO kablam! 
Oct 27 01:20:37.429 INFO kablam! warning: unused variable: `b`
Oct 27 01:20:37.429 INFO kablam!  --> src/main.rs:8:9
Oct 27 01:20:37.429 INFO kablam!   |
Oct 27 01:20:37.429 INFO kablam! 8 |     let b: i32 = 2;                             // type i32 is explicitly declared
Oct 27 01:20:37.429 INFO kablam!   |         ^ help: consider using `_b` instead
Oct 27 01:20:37.429 INFO kablam! 
Oct 27 01:20:37.429 INFO kablam! warning: unused variable: `c`
Oct 27 01:20:37.429 INFO kablam!   --> src/main.rs:10:10
Oct 27 01:20:37.429 INFO kablam!    |
Oct 27 01:20:37.429 INFO kablam! 10 |     let (c, d) = (3, 4);                        // variable bindings of multiple vars at the same time
Oct 27 01:20:37.429 INFO kablam!    |          ^ help: consider using `_c` instead
Oct 27 01:20:37.429 INFO kablam! 
Oct 27 01:20:37.429 INFO kablam! warning: unused variable: `d`
Oct 27 01:20:37.429 INFO kablam!   --> src/main.rs:10:13
Oct 27 01:20:37.429 INFO kablam!    |
Oct 27 01:20:37.429 INFO kablam! 10 |     let (c, d) = (3, 4);                        // variable bindings of multiple vars at the same time
Oct 27 01:20:37.430 INFO kablam!    |             ^ help: consider using `_d` instead
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: unused variable: `e`
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:12:9
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 12 |     let e: i32;
Oct 27 01:20:37.430 INFO kablam!    |         ^ help: consider using `_e` instead
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: variable `f` is assigned to, but never used
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:18:13
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 18 |     let mut f = 5;                              // make variable mutable
Oct 27 01:20:37.430 INFO kablam!    |             ^
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam!    = note: consider using `_f` instead
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: value assigned to `f` is never read
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:19:5
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 19 |     f = 6;                                      // now I can assign a new value (of the same type!) to this variable
Oct 27 01:20:37.430 INFO kablam!    |     ^
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: unused variable: `f`
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:20:9
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 20 |     let f = "Look, I am text now";              // shadowing, and changing type!
Oct 27 01:20:37.430 INFO kablam!    |         ^ help: consider using `_f` instead
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: value assigned to `i` is never read
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:36:13
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 36 |     let mut i = 5;
Oct 27 01:20:37.430 INFO kablam!    |             ^
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.430 INFO kablam! warning: unused variable: `j`
Oct 27 01:20:37.430 INFO kablam!   --> src/main.rs:37:9
Oct 27 01:20:37.430 INFO kablam!    |
Oct 27 01:20:37.430 INFO kablam! 37 |     let j = (i = 6);                            // the value of an assignment is an empty tuple: so j has the value (), not 6
Oct 27 01:20:37.430 INFO kablam!    |         ^ help: consider using `_j` instead
Oct 27 01:20:37.430 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `a_boolean`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:59:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 59 |     let a_boolean = true;                         // with inference
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^ help: consider using `_a_boolean` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `another_boolean`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:60:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 60 |     let another_boolean: bool = false;            // without inference
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^^^^^^^ help: consider using `_another_boolean` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `this_is_a_char`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:63:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 63 |     let this_is_a_char = 'x';                    // delimited by a single quote/tick
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^^^^^^ help: consider using `_this_is_a_char` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `two_hearts_char`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:64:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 64 |     let two_hearts_char = '💕';                   // any unicode char (due to the fact that they are UTF-32, all chars are 4 bytes instead of just 1)
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^^^^^^^ help: consider using `_two_hearts_char` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `an_integer`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:67:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 67 |     let an_integer = 42;                         // default with inference (type i32 - The 32-bit signed integer type)
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^^ help: consider using `_an_integer` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `a_float`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:68:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 68 |     let a_float = 1.0;                           // default with inference (type f64 - The 64-bit floating point type)
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^ help: consider using `_a_float` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `complete_slice`
Oct 27 01:20:37.431 INFO kablam!   --> src/main.rs:99:9
Oct 27 01:20:37.431 INFO kablam!    |
Oct 27 01:20:37.431 INFO kablam! 99 |     let complete_slice = &mutable_array[..];                  // [5, 7, 3, 23, 11]
Oct 27 01:20:37.431 INFO kablam!    |         ^^^^^^^^^^^^^^ help: consider using `_complete_slice` instead
Oct 27 01:20:37.431 INFO kablam! 
Oct 27 01:20:37.431 INFO kablam! warning: unused variable: `partial_slice`
Oct 27 01:20:37.431 INFO kablam!    --> src/main.rs:100:9
Oct 27 01:20:37.431 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 100 |     let partial_slice = &mutable_array[1..3];                 // [7, 4] - from item at index 1 to item at index 3 (excluded)
Oct 27 01:20:37.432 INFO kablam!     |         ^^^^^^^^^^^^^ help: consider using `_partial_slice` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: unused variable: `from_item_till_end_slice`
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:101:9
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 101 |     let from_item_till_end_slice = &mutable_array[1..];       // [7, 4, 23, 11]
Oct 27 01:20:37.432 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_from_item_till_end_slice` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: unused variable: `from_beginning_till_item_slice`
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:102:9
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 102 |     let from_beginning_till_item_slice = &mutable_array[..2]; // [5, 7]
Oct 27 01:20:37.432 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `_from_beginning_till_item_slice` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: unused variable: `tuple_one`
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:106:9
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 106 |     let tuple_one = (1, "one");
Oct 27 01:20:37.432 INFO kablam!     |         ^^^^^^^^^ help: consider using `_tuple_one` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: value assigned to `tuple_xy` is never read
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:110:13
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 110 |     let mut tuple_xy = (0, "zero");
Oct 27 01:20:37.432 INFO kablam!     |             ^^^^^^^^
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: unused variable: `tuple_second_item`
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:123:9
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 123 |     let tuple_second_item = tuple_xy.1;
Oct 27 01:20:37.432 INFO kablam!     |         ^^^^^^^^^^^^^^^^^ help: consider using `_tuple_second_item` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.432 INFO kablam! warning: unused variable: `x`
Oct 27 01:20:37.432 INFO kablam!    --> src/main.rs:135:22
Oct 27 01:20:37.432 INFO kablam!     |
Oct 27 01:20:37.432 INFO kablam! 135 | fn always_return_one(x: i32) -> i32 {
Oct 27 01:20:37.432 INFO kablam!     |                      ^ help: consider using `_x` instead
Oct 27 01:20:37.432 INFO kablam! 
Oct 27 01:20:37.439 INFO kablam! warning: variable does not need to be mutable
Oct 27 01:20:37.439 INFO kablam!   --> src/main.rs:87:9
Oct 27 01:20:37.439 INFO kablam!    |
Oct 27 01:20:37.439 INFO kablam! 87 |     let mut mutable_array = [1.5, 2.3, 3.0]; // type [f64; 3]
Oct 27 01:20:37.439 INFO kablam!    |         ----^^^^^^^^^^^^^
Oct 27 01:20:37.439 INFO kablam!    |         |
Oct 27 01:20:37.439 INFO kablam!    |         help: remove this `mut`
Oct 27 01:20:37.439 INFO kablam!    |
Oct 27 01:20:37.439 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 01:20:37.439 INFO kablam! 
Oct 27 01:20:37.443 INFO kablam! warning: function is never used: `diverges`
Oct 27 01:20:37.443 INFO kablam!    --> src/main.rs:140:1
Oct 27 01:20:37.443 INFO kablam!     |
Oct 27 01:20:37.443 INFO kablam! 140 | fn diverges() -> ! {                            // defines the return type as "diverges" using the bang symbol
Oct 27 01:20:37.443 INFO kablam!     | ^^^^^^^^^^^^^^^^^^
Oct 27 01:20:37.443 INFO kablam!     |
Oct 27 01:20:37.443 INFO kablam!     = note: #[warn(dead_code)] on by default
Oct 27 01:20:37.443 INFO kablam! 
Oct 27 01:20:37.487 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
Oct 27 01:20:37.496 INFO kablam! su: No module specific data is present
Oct 27 01:20:38.367 INFO running `"docker" "rm" "-f" "779bcf5d0cc650091c54d88a8657ab29600870c74ce1dad37c9d442aa35eef8e"`
Oct 27 01:20:38.603 INFO blam! 779bcf5d0cc650091c54d88a8657ab29600870c74ce1dad37c9d442aa35eef8e