examples/rust: Update CoAP example modules #20821
Merged
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Contribution description
This updates the use of two deprecated items to the latest idioms in riot-wrappers 0.8.
Testing procedure
Green CI should suffice.
Issues/PRs references
This unblocks testing of RIOT-OS/rust-riot-wrappers#90: riot-wrappers 0.9 is developed and tested as 0.8.999, because its claim is that if all deprecation warnings of latest 0.8 are resolved, and you don't do something weird1, all can still run.
Footnotes
Such as assigning the error from a known can-not-err result to a
!
type rather than toInfallible
– that is a breaking API change, but practical breakage is not expected, and at worst fixed by implementing some conversion to do the same when going from!
as forInfallible
. ↩