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### What it does
Checks for `use Enum::*`.
### Why is this bad?
It is usually better style to use the prefixed name of
an enumeration variant, rather than importing variants.
### Known problems
Old-style enumerations that prefix the variants are
still around.
### Example
```
use std::cmp::Ordering::*;
foo(Less);
```
Use instead:
```
use std::cmp::Ordering;
foo(Ordering::Less)
```
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