1 warning: unused return value of `need_to_use_this_value` which must be used
2 --> $DIR/fn_must_use.rs:60:5
4 LL | need_to_use_this_value(); //~ WARN unused return value
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^
7 note: lint level defined here
8 --> $DIR/fn_must_use.rs:13:9
10 LL | #![warn(unused_must_use)]
12 = note: it's important
14 warning: unused return value of `MyStruct::need_to_use_this_method_value` which must be used
15 --> $DIR/fn_must_use.rs:65:5
17 LL | m.need_to_use_this_method_value(); //~ WARN unused return value
18 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
20 warning: unused return value of `EvenNature::is_even` which must be used
21 --> $DIR/fn_must_use.rs:66:5
23 LL | m.is_even(); // trait method!
26 = note: no side effects
28 warning: unused return value of `std::cmp::PartialEq::eq` which must be used
29 --> $DIR/fn_must_use.rs:72:5
31 LL | 2.eq(&3); //~ WARN unused return value
34 warning: unused return value of `std::cmp::PartialEq::eq` which must be used
35 --> $DIR/fn_must_use.rs:73:5
37 LL | m.eq(&n); //~ WARN unused return value
40 warning: unused comparison which must be used
41 --> $DIR/fn_must_use.rs:76:5
43 LL | 2 == 3; //~ WARN unused comparison
46 warning: unused comparison which must be used
47 --> $DIR/fn_must_use.rs:77:5
49 LL | m == n; //~ WARN unused comparison