Forbid coercing &T to &mut T #21424
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Forbid coercing &T to &mut T #21424
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barosl
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This is caught in borrowck now, but catching in typeck is faster and improves diagnostics. CC rust-lang#17561. r? @nikomatsakis
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This is caught in borrowck now, but catching in typeck is faster and improves diagnostics.
cc #17561.
r? @nikomatsakis