What's the difference between tracing::Instrument and tracing_futures::Instrument?

[inklesspen]

• https://docs.rs/tracing/0.1.44/tracing/trait.Instrument.html
• https://docs.rs/tracing-futures/0.2.5/tracing_futures/trait.Instrument.html

The docs suggest they do the same thing. But each has its own implementation:

• https://github.com/tokio-rs/tracing/blob/main/tracing/src/instrument.rs
• https://github.com/tokio-rs/tracing/blob/main/tracing-futures/src/lib.rs

Do they have any differences?