Bump tracing-subscriber from 0.3.7 to 0.3.9

[dependabot]

Bumps tracing-subscriber from 0.3.7 to 0.3.9.

Release notes

Sourced from tracing-subscriber's releases.

tracing-subscriber 0.3.9

This release updates the minimum supported Rust version (MSRV) to 1.49.0, and updates the (optional) dependency on parking_lot to v0.12.

Changed

• Updated minimum supported Rust version (MSRV) to 1.49.0 (#1913)
• parking_lot: updated to v0.12 ([008339d])

Added

• fmt: Documentation improvements (#1926, #1927)

#1913: tokio-rs/tracing#1913 #1926: tokio-rs/tracing#1926 #1927: tokio-rs/tracing#1927 [008339d]: tokio-rs/tracing@008339d

tracing-subscriber 0.3.8

This release adds experimental support for recording structured field values using the [valuable] crate to the format::Json formatter. In particular, user-defined types which are recorded using their [valuable::Valuable] implementations will be serialized as JSON objects, rather than using their fmt::Debug representation. See [this blog post][post] for details on valuable.

Note that valuable support currently requires --cfg tracing_unstable. See the documentation for details.

Additionally, this release includes a number of other smaller API improvements.

Added

• json: Experimental support for recording [valuable] values as structured JSON (#1862, #1901)
• filter: Targets::would_enable method for testing if a Targets filter would enable a given target (#1903)
• fmt: map_event_format, map_fmt_fields, and map_writer methods to fmt::Layer and fmt::SubscriberBuilder (#1871)

Changed

• tracing-core: updated to [0.1.22][core-0.1.22]

Fixed

• Set smallvec minimal version to 1.2.0, to fix compilation errors with -Z minimal-versions (#1890)
• Minor documentation fixes (#1902, #1893)

... (truncated)

Commits

• 2974ae9 subscriber: prepare to release v0.3.9 (#1938)
• 008339d subscriber: update parking_lot to 0.12
• 846a53e tracing: prepare to release v0.1.31 (#1937)
• 94379a3 docs: clean up tracing_subscriber::fmt formatter docs (#1927)
• 38a99d8 docs: add tracing-forest to "Related Crates" section (#1935)
• b37d8af tracing: fix wrong log level in warn! macro (#1930)
• e5921ba docs: update Compact formatter docs (#1926)
• f4a44cf opentelemetry: prepare to release v0.17.1 (#1922)
• 21eb741 opentelemetry: allocate fewer strings for recording events (#1917)
• f8a93f1 opentelemetry: forward event source locations (#1911)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #15.