Matthias Wahl

This one is a transitive dependency via log4rs v1.1.1

This issue is tracked here: https://github.com/estk/log4rs/issues/247

cc @dak-x I think this would unblock your PR #1818 would it?

This one is a transitive dependency via log4rs v1.1.1

@rameels You are hereby assigned! Thanks for your initiative. Feel free to drop any questions you might have here or on our discord: https://chat.tremor.rs/

Interestingly this is also reproducible without iftype: ```pony actor Main // ponyc is failing with checking this constraint, which is also what is artificially constructed in the iftype example above...

Here is an example stacktrace of a SIGABRT: ``` pthread_kill (@pthread_kill:81) raise (@raise:10) abort (@abort:46) rocksdb::port::PthreadCall(const char *, int) (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/port/port_posix.cc:54) rocksdb::port::Mutex::Lock() (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/port/port_posix.cc:82) rocksdb::MutexLock::MutexLock(rocksdb::port::Mutex*) (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/util/mutexlock.h:32) rocksdb::PeriodicWorkScheduler::Unregister(rocksdb::DBImpl*) (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/db/periodic_work_scheduler.cc:57) rocksdb::DBImpl::CancelAllBackgroundWork(bool) (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/db/db_impl/db_impl.cc:484) rocksdb::DBImpl::CloseHelper() (/home/mat/.cargo/registry/src/github.com-1ecc6299db9ec823/librocksdb-sys-0.8.0+7.4.4/rocksdb/db/db_impl/db_impl.cc:551)...

Interestingly upgrading to rocksdb 7.7.3 didn't solve this issue :sob: Still getting segfaults.

You can take out the sleep in the example above. This has no effect on the segfaulting/aborting. Also the task running in our real world application is running infinitely, as...

Turns out we depend on this change with our usage of `surf` and `http-client` and would love to get this out with a new release. :heart: