Embassy STM32 examples not providing timestamps on defmt logs

[henryshunt]

When I run the STM32 examples, I don't see timestamps on the defmt logs as the getting started docs show, despite the examples apparently having the necessary configuration to provide timestamps. I've also been unable to get timestamps when creating my own Embassy projects.

If I change the cargo run command to explicitly display timestamps in probe-rs, I get timestamps (presumably from the host side rather than the target) and the following message is output:

WARN defmt_decoder::log::format: logger format contains timestamp but no timestamp implementation was provided; consider removing the timestamp (`{t}` or `{T}`) from the logger format or provide a `defmt::timestamp!` implementation

This seems to imply the target isn't actually providing timestamps to the host.

Does anyone have any idea how to solve this and get timestamps from the target? My probe-rs version is v0.24.0.