Is there a way to get a good idea of which modules (or functions, or trait impls...) in a crate are most responsible for long build times? I mean, I know I can use -Ztime-passes to figure out whether the time is spent in macros, or trans, or type checking... but there isn't a whole lot that this information means to me. (after all, it's largely for debugging rust's performance issues)
I know this is somewhat of an ill-posed question, since various factors muddy the question of "who's responsible" (such as the inlining of functions into other functions, and the fact that a generic function in one crate may be monomorphized in another). But maybe there is at least something out there that can give me a clearer picture of what the relationship is between my crate's build time, and the code in it?
) but have you tried extrapolating what it might be by playing with