Add clippy::unconditional_recursion to ./x clippy ci

[cuviper]

The clippy lint catches some things that rustc's equivalent builtin lint
does not, for example #146940:

error: function cannot return without recursing
    --> library/std/src/path.rs:3428:5
     |
3428 | /     fn eq(&self, other: &String) -> bool {
3429 | |         self == &*other
3430 | |     }
     | |_____^
     |
note: recursive call site
    --> library/std/src/path.rs:3429:9
     |
3429 |         self == &*other
     |         ^^^^^^^^^^^^^^^
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unconditional_recursion
     = note: requested on the command line with `-D clippy::unconditional-recursion`

[Kobzol]

r? @Kobzol

You can r=me after the fix PR lands.

[rustbot]

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  • a2d2869

[cuviper]

@bors r=Kobzol rollup

[bors]

📌 Commit a2d2869 has been approved by Kobzol

It is now in the queue for this repository.