The segmentation fault is caused by `libmodest.so.0`, provided by `src:modest`.
The C stack trace points directly into `libmodest`:
/usr/lib/loongarch64-linux-gnu/libmodest.so.0, at myhtml_parser_worker+0x24
/usr/lib/loongarch64-linux-gnu/libmodest.so.0, at
mythread_function_queue_batch+0xb8
The `selectolax` test only triggers the crash. Therefore, this bug also
affects `src:modest`.
