Rollup of 10 pull requests#73824

Closed

Manishearth wants to merge 39 commits into

rust-lang:masterfrom

Manishearth:rollup-e527kbp

Commits on May 28, 2020

Added io forwarding methods to the stdio structs
Lucretiel
committed

Commits on Jun 11, 2020

Commits on Jun 17, 2020

Commits on Jun 22, 2020

Commits on Jun 24, 2020

reduce sanity check in debug mode
RalfJung
committed

Commits on Jun 25, 2020

Adds a clearer message for when the async keyword is missing from a function
nellshamrell
committed

Commits on Jun 26, 2020

errors: use `-Z terminal-width` in JSON emitter
davidtwco
committed

Commits on Jun 27, 2020

Commits on Jun 28, 2020