It's not possible to create Paths allocation-free

[heinrich5991]

1. There is no way to create a Path object to pass to File::open statically, it's always a runtime allocation.
2. File::open takes a Path object as reference, although it only clones it afterwards.

Solutions to this would include creating a Path DST object (possibly combined with a PathVec which can grow dynamically).

[alexcrichton]

This was resolved with the new std::fs design via AsPath.

[tbu-]

@alexcrichton The first part of the issue was resolved ("no way to pass a static path object"), but the second part wasn't ("File::open still takes the path as reference and clones it afterwards"). Should I open a new issue for it?

[alexcrichton]

@tbu- If you'd like to, sure.