What is the significance of creating span::Id to determine if they are the same?

[rain2307]

What negative impacts could arise if I create an infinitely incrementing ID?

tracing/tracing-core/src/collect.rs

Line 257 in 91fedc1

fn new_span(&self, span: &span::Attributes<'_>) -> span::Id;

[mladedav]

If you're writing a collector, you can assign IDs like that if you want to.

The registry in tracing itself doesn't do that because it reuses IDs for performance reasons.