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Add a #[must_use] annotation to Span #3234

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Add a #[must_use] annotation to Span #3234

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1 change: 1 addition & 0 deletions tracing/src/span.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -345,6 +345,7 @@ pub trait AsId: crate::sealed::Sealed {
/// span will silently do nothing. Thus, the handle can be used in the same
/// manner regardless of whether or not the trace is currently being collected.
#[derive(Clone)]
#[must_use = "once a span has been created, it should be entered"]
pub struct Span {
/// A handle used to enter the span when it is not executing.
///
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