Build all rust libraries and binaries with "our packaging solution"

[brson]

We should be dogfooding our tools. Turn all of our artifacts into packages and build them with rustpkg.

[catamorphism]

Taking this over since I'm working on rustpkg.

[z0w0]

@catamorphism getting Servo building using it would probably be a good start just to test out how well it works in a "heavy" development environment.

[catamorphism]

Nominating for milestone 5, production-ready

[graydon]

accepted for production-ready milestone

[emberian]

Visiting for triage; nothing to add.

[pnkfelix]

Whatever our packaging solution ends up being, we should dog food it as soon as we can. Assigning P-high. Not 1.0 blocker though.

[japaric]

Should this be closed? rustpkg is no more, cargo is doing great (lots of people are using it) and there is #16091 which tracks the specific issue of building rust using cargo.

[alexcrichton]

Yeah I agree that #16091 is the way forward if possible, thanks @japaric!