In the blue/purple graph, only the blue typechecking portion of a dependency's build needs to complete before kicking off subsequent builds that depend on it. The purple machine code generation portion can continue in parallel.
Judging from the 1.38.0 changelog, this one looks like a fairly toned-down Rust release. Nevertheless, bug-fixes and performance improvements as usual.
I think I'm going to skip this one until the recently stabilized async-await feature has finally made it in the next version. :)
Please file bugs! We only backport major stuff to beta, but this is such an important feature that hearing about things early is even more important than it usually is.
https://gistpreview.github.io/?b19f31756dc76a050cf4fe55f348a...
In the blue/purple graph, only the blue typechecking portion of a dependency's build needs to complete before kicking off subsequent builds that depend on it. The purple machine code generation portion can continue in parallel.