Resource temporarily unavailable on successive sampling port reads

[wucke13]

When reading very quickly, in a loop{ }, from a sampling port, I got the following error:

 ERROR Partition: health_monitor > PanicInfo {
 ERROR Partition: health_monitor >     payload: Any { .. },
 ERROR Partition: health_monitor >     message: Some(
 ERROR Partition: health_monitor >         called `Result::unwrap()` on an `Err` value: TypedError { err: Panic, source: Resource temporarily unavailable (os er..
 ERROR Partition: health_monitor >     ),
 ERROR Partition: health_monitor >     location: Location {
 ERROR Partition: health_monitor >         file: "/sources/a653rs-linux-0.1.0-dev_wucke13/src/apex.rs",
 ERROR Partition: health_monitor > PanicInfo {

[dadada]

I get this error reliably. What would be a good way for avoiding this error? I did not have this error with versions from back in October.