Rollup of 7 pull requests#35240

Closed

sanxiyn wants to merge 17 commits intorust-lang:masterfrom

Commits on Jul 31, 2016

add extended information for E0529, slice pattern expects array or slice
zackmdavis
committed
add extended info for E0527, slice pattern element count expectations
zackmdavis
committed
extended info for E0528, expected at least this-and-such many elements
zackmdavis
committed

Commits on Aug 1, 2016

Add Derive not possible question to Copy
Havvy
committed

Commits on Aug 3, 2016