relax Debug impls to only require T::Key<'a>: Debug for a particular 'a #39
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This allows
Debug
with borrowed items to work in more circumstances.We do have to use unsafe code, but that's okay because we have a
T: 'a
bound. This means that the key is valid for 'a, and in any case we discard the key immediately after calling itsDebug
impl.It looks like we'll also have to do this for all the
IdOrdMap
mutable getters. That will come in the future.