Require 'static on trait objects #1
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When a struct uses
dyn MyTraitas its last field, there is an implicit'staticbound on the trait object. This means that converting anyT: MyTraitinto such a trait object is not ok. Thus, add a+ 'staticbound to the bounds on the generated methods to check for this unless the trait object contains an explicit lifetime.This was discovered during a crater run of rust-lang/rust#136776.