Rollup of 8 pull requests#74724

Merged

bors merged 28 commits intorust-lang:masterfrom

Manishearth:rollup-plbt8fe

Jul 24, 2020

Commits on Jun 25, 2020

Commits on Jun 26, 2020

remove some compiler warnings
stlankes
committed

Commits on Jul 6, 2020

use latest version of hermit-abi
stlankes
committed

Commits on Jul 22, 2020

Commits on Jul 23, 2020

Rearrange the pipeline of `pow` to gain efficiency

Neutron3529
authored and
Neutron3529
committed
Downgrade glibc to 2.11.1 for ppc, ppc64 and s390x
Martin Sirringhaus
committed
delay_span_bug instead of silent ignore
Mark-Simulacrum
committed
fixed error reporting for mismatched traits
ayrtonm
committed

Commits on Jul 24, 2020