Rollup of 7 pull requests#70625

Merged

bors merged 18 commits into

rust-lang:masterfrom

Dylan-DPC-zz:rollup-o8n2hw8

Mar 31, 2020

Commits on Mar 19, 2020

Ensure there are versions of test code for aarch64 windows
danielframpton
committed

Commits on Mar 22, 2020

Commits on Mar 30, 2020

Document ThreadSanitizer in unstable-book
tmiasko
committed

Commits on Mar 31, 2020