Integration tests randomly failing [Bug]

[yellowhatter]

Describe the bug

I noticed that some list of our integration tests are randomly failing when executed concurrently on multicore CPU.

That affects both master and refactor_transport_trait branches and can be reproduced.

To reproduce

This sometimes fails: cargo nextest run -p zenoh --features unstable

This doesn't: taskset 0x1 cargo nextest run -p zenoh --features unstable

The failing tests are (that what I noticed):

three_node_combination
zenoh_matching_status_any
zenoh_matching_status_remote
zenoh_session_multicast

System info

Ubuntu 22.04 AMD Ryzen 9