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It seems unnatural that CollectionAllocErr
currently does not implement std::error::Error
which would come in handy in cases such as implementing std::error::Error::source
on user-defined errors caused by CollectionAllocErr
.
While error_in_core
is not stable yet, such implementation could be hidden behind a feature flag such as (commmonly used) std
.
Since the features should be additive (i.e. an inverted no-std
feature would not be the right approach), it is a breaking change to add such a feature so I suggest adding this to #183.
If this change is welcome, I may create a pull request to implement it.
cc @mbrubeck as the maintainer of the 2.0
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