* A step towards #34902 * More stable error messages in some places related to crate loading * Possible slight performance improvements since all `HashMap`s replaced had small keys where `FnvHashMap` should be faster (although I didn't measure)
* A step towards #34902 * More stable error messages in some places related to crate loading * Possible slight performance improvements since all `HashMap`s replaced had small keys where `FnvHashMap` should be faster (although I didn't measure)