Adds derive for missing debug implementations #597
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karroffel
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When instrumenting my own functions for tokio/tracing I ran into missing Debug implementations for a few structs.
This PR adds `#[derive(Debug)] to those structs and those used in their fields.
If this would not be desired, either custom Debug implementations or something like https://crates.io/crates/opaque-debug could be used. Although functionally https://crates.io/crates/derivative is nicer, it pulls in all manner of not-so-nice dependencies like
syn.