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rust-clippy/tests/ui/double_must_use.stderr

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new lints around `#[must_use]` fns `must_use_unit` lints unit-returning functions with a `#[must_use]` attribute, suggesting to remove it. `double_must_use` lints functions with a plain `#[must_use]` attribute, but which return a type which is already `#[must_use]`, so the attribute has no benefit. `must_use_candidate` is a pedantic lint that lints functions and methods that return some non-unit type that is not already `#[must_use]` and suggests to add the annotation.
2019-09-18 06:37:41 +00:00
error: this function has an empty `#[must_use]` attribute, but returns a type already marked as `#[must_use]`
Merge commit 'bf1c6f9871f430e284b17aa44059e0d0395e28a6' into clippyup
2020-10-23 20:16:59 +00:00
--> $DIR/double_must_use.rs:5:1
new lints around `#[must_use]` fns `must_use_unit` lints unit-returning functions with a `#[must_use]` attribute, suggesting to remove it. `double_must_use` lints functions with a plain `#[must_use]` attribute, but which return a type which is already `#[must_use]`, so the attribute has no benefit. `must_use_candidate` is a pedantic lint that lints functions and methods that return some non-unit type that is not already `#[must_use]` and suggests to add the annotation.
2019-09-18 06:37:41 +00:00
|
LL | pub fn must_use_result() -> Result<(), ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::double-must-use` implied by `-D warnings`
= help: either add some descriptive text or remove the attribute
error: this function has an empty `#[must_use]` attribute, but returns a type already marked as `#[must_use]`
Merge commit 'bf1c6f9871f430e284b17aa44059e0d0395e28a6' into clippyup
2020-10-23 20:16:59 +00:00
--> $DIR/double_must_use.rs:10:1
new lints around `#[must_use]` fns `must_use_unit` lints unit-returning functions with a `#[must_use]` attribute, suggesting to remove it. `double_must_use` lints functions with a plain `#[must_use]` attribute, but which return a type which is already `#[must_use]`, so the attribute has no benefit. `must_use_candidate` is a pedantic lint that lints functions and methods that return some non-unit type that is not already `#[must_use]` and suggests to add the annotation.
2019-09-18 06:37:41 +00:00
|
LL | pub fn must_use_tuple() -> (Result<(), ()>, u8) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: either add some descriptive text or remove the attribute
error: this function has an empty `#[must_use]` attribute, but returns a type already marked as `#[must_use]`
Merge commit 'bf1c6f9871f430e284b17aa44059e0d0395e28a6' into clippyup
2020-10-23 20:16:59 +00:00
--> $DIR/double_must_use.rs:15:1
new lints around `#[must_use]` fns `must_use_unit` lints unit-returning functions with a `#[must_use]` attribute, suggesting to remove it. `double_must_use` lints functions with a plain `#[must_use]` attribute, but which return a type which is already `#[must_use]`, so the attribute has no benefit. `must_use_candidate` is a pedantic lint that lints functions and methods that return some non-unit type that is not already `#[must_use]` and suggests to add the annotation.
2019-09-18 06:37:41 +00:00
|
LL | pub fn must_use_array() -> [Result<(), ()>; 1] {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: either add some descriptive text or remove the attribute
error: aborting due to 3 previous errors
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