Other parts of the Rust ecosystem have had great luck using work-stealing queues. There's a talk about how Rayon did this[1] and a good article about using it in Stylo[2], a new CSS engine written by Mozilla.

[1] https://www.youtube.com/watch?v=gof_OEv71Aw

[2] https://hacks.mozilla.org/2017/08/inside-a-super-fast-css-en...