sentry-tracing: Errors show up under wrong names in sentry

[loewenheim]

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Environment

How do you use Sentry? Sentry 4 Sentry

Which SDK and version? sentry-rust 0.24.2

Steps to Reproduce

With sentry-tracing enabled, call tracing::error!

Expected Result

The error shows up in sentry under a sensible name

Actual Result

The error shows up in Sentry with a name like event crates/symbolicator/src/services/objects/data_cache.rs:189 download_file.

This behavior has already been fixed in https://github.com/getsentry/sentry-rust/pull/423. We're keeping this open as a tracking issue until we know what behavior we actually want to see instead.