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2f59b32a46
## Motivation
This will avoid breaking CI on new releases of clippy. It also makes the
code a little easier to read.
## Solution
- Convert `match val { pat => true, _ => false }` to `matches!(val, pat)`
- Remove unnecessary closures
- Convert `self: &mut Self` to `&mut self`
This bumps the MSRV to 1.42.0 for `matches!`.
The latest version of rust is 1.46.0, so as per
https://github.com/tokio-rs/tracing#supported-rust-versions this is not
considered a breaking change.
I didn't fix the following warning because the fix was not trivial/needed
a decision:
```
warning: you are deriving `Ord` but have implemented `PartialOrd` explicitly
--> tracing-subscriber/src/filter/env/field.rs:16:32
|
16 | #[derive(Debug, Eq, PartialEq, Ord)]
| ^^^
|
= note: `#[warn(clippy::derive_ord_xor_partial_ord)]` on by default
note: `PartialOrd` implemented here
--> tracing-subscriber/src/filter/env/field.rs:98:1
|
98 | / impl PartialOrd for Match {
99 | | fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
100 | | // Ordering for `Match` directives is based first on _whether_ a value
101 | | // is matched or not. This is semantically meaningful --- we would
... |
121 | | }
122 | | }
| |_^
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derive_ord_xor_partial_ord
```
As a side note, this found a bug in clippy 😆 https://github.com/rust-lang/rust-clippy/issues/6089