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### What it does
Checks for a redundant `clone()` (and its relatives) which clones an owned
value that is going to be dropped without further use.
### Why is this bad?
It is not always possible for the compiler to eliminate useless
allocations and deallocations generated by redundant `clone()`s.
### Known problems
False-negatives: analysis performed by this lint is conservative and limited.
### Example
```
{
let x = Foo::new();
call(x.clone());
call(x.clone()); // this can just pass `x`
}
["lorem", "ipsum"].join(" ").to_string();
Path::new("/a/b").join("c").to_path_buf();
```
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