Move static_assert! into librustc_data_structures#55805
Merged
bors merged 4 commits intorust-lang:masterfrom Nov 14, 2018 
Merged
Move `static_assert!` into librustc_data_structures#55805bors merged 4 commits intorust-lang:masterfrom 
bors merged 4 commits intorust-lang:masterfrom