tracing 0.1.42

Important

The Span::record_all method has been removed from the documented API. It
was always unsuable via the documented API as it requried a ValueSet which
has no publically documented constructors. The method remains, but should not
be used outside of tracing macros.

Added

• attributes: Support constant expressions as instrument field names (#3158)
• Add record_all! macro for recording multiple values in one call (#3227)
• core: Improve code generation at trace points significantly (#3398)

Changed

• tracing-core: updated to 0.1.35 (#3414)
• tracing-attributes: updated to 0.1.31 (#3417)

Fixed

• Fix "name / parent" variant of event! (#2983)
• Remove 'r#' prefix from raw identifiers in field names (#3130)
• Fix perf regression when release_max_level_* not set (#3373)
• Use imported instead of fully qualified path (#3374)
• Make valueset macro sanitary (#3382)

Documented

• core: Add missing dyn keyword in Visit documentation code sample (#3387)