Deprecation of permanently available crates, is not, on its own, reason enough to upgrade when it breaks the project's MinRustV.

Does this otherwise solve a problem?

Yeah, I don't think any project should depend on unmaintained code, esp as upstream merged tempdir into tempfile, which is maintained.

About the build issue, it is explained here:
rust-random/getrandom#15 (review)

Note that we are already depending on tempfile:

so, having two libs doing the same thing in the same project isn't optimal :)

Is this every instance of tempdir?

yeah, afaik
I will rebase the patch

Looks like you need to rebase again...

@Arcterus rebased and green!