Jubilee

`--out-dir` should not have this name because `--out-dir` on rustc performs almost the exact function of `--target-dir`, and to have this be a copy directory command on cargo instead would...

> The key scenario for this is integrating with other build systems, especially where you are cross-compiling: since Cargo will place the build artifacts into a target-triple directory, you need...

CI configuration languages generally accept variables, indeed this is virtually required for making a CI matrix *work*. And in a project I have recently been working on which requires constructing...

We don't seem to document those for other collections either, only the methods that can be directly compared, so we probably should try to set an actual policy on these...

This no longer appears to crash? It's probably still a bad idea to allow people to specify incorrect functions when we know they are dubious at best, though.

This no longer appears to crash?

This issue only dubiously shows a codegen regression (it is Not Great, to be clear, but it's not clear from this example and my knowledge of how common x86 microarchitectures...

An alternative would be experimenting more with this in context of other code we expect it to live in, because LLVM eagerly inlining can make problems go away, as cited...

> BTW, in our project, we also noticed performance degradation because of this regression (small 16B Results returned via the stack instead of registers), so I vote for a quick...

> We do use quite a few functions returning Results in tight loops (fallible value matchers, pushing results to bitmap sinks). I can try to create a manageable repro case...