Rollup of 9 pull requests#58470

Closed

Centril wants to merge 31 commits intorust-lang:masterfrom

Commits on Jan 30, 2019

Fix #57730
Zoxc
committed

Commits on Feb 1, 2019

add regression test for #57979
nikomatsakis
committed

Commits on Feb 8, 2019

Remove code for updating copyright years in generate-deriving-span-tests
sugar700
committed
Remove initial newline from automatically generated span tests
sugar700
committed
Don't default on std crate when manipulating browser history
GuillaumeGomez
committed

Commits on Feb 13, 2019

Commits on Feb 14, 2019