I get it now. The onTermination closure needs to be annotated with @Sendable: continuation.onTermination = { @Sendable termination in … }

Hi all! SE-0302 introduced the Sendable protocol, which is used to indicate which types have values that can safely be copied across actors or, more generally, into any context where a copy of the value might be used concurrently with the original. Applied uniformly to all Swift code, Sendable checking eliminates a large class of data races cau...