[beta] backports#37549

Merged

brson merged 10 commits into

rust-lang:betafrom

brson:beta-next

Nov 3, 2016

Commits on Nov 3, 2016

Add release notes for 1.12.1
brson
committed
add a per-param-env cache to `impls_bound`

arielb1
authored and
brson
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Allow bootstrapping without a key. Fixes #36548
brson
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Fix label scopes.

jseyfried
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brson
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Do not intern filemap to entry w/ mismatched length. Fix #37274 (I think).

pnkfelix
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brson
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normalize trait-ref in context of impl

nikomatsakis
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brson
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add #32791 test case

nikomatsakis
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brson
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Fix ICE when attempting to get closure generics.

Mark-Simulacrum
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brson
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Fix ICE when printing closures, and other similar types

Mark-Simulacrum
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brson
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Bump prerelease version
brson
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