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9ac8e0505b
Summary:
We have a number of error enums that wrap an existing errors, but fail to
register the underlying error as a `#[source]`. This results in truncated
context chains when we print the error. This fixes that. It also removes a
bunch of manual `From` implementation that can be provided by thiserror's
`#[from]`.
This also required updating the `Display` implementation for those errors. I've
opted for not printing the underlying error, since the context chain will
include it. This does mean that if we print one of those errors without the
context chain (i.e. `{}` as opposed to `{:#}` or `{:?}`), then we'll lose out a
bit of context. That said, this should be OK, as we really shouldn't ever being
do this, because we'd be missing the rest of the chain anyways.
Reviewed By: StanislavGlebik
Differential Revision: D21399490
fbshipit-source-id: a970a7ef0a9404e51ea3b59d783ceb7bf33f7328
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