`EvaluatedToUnknown` -> `EvaluatedToAmbigStackDependent`, `EvaluatedToRecur` -> `EvaluatedToErrStackDependent` Less confusing names, since the only difference between them and their parallel `EvalutedTo..` is that they are stack dependent. r? lcnr
alloc_str
rustc::potential_query_instability
#[rustc_host]