https://bugs.winehq.org/show_bug.cgi?id=49896
--- Comment #6 from Esme Povirk madewokherd@gmail.com --- Still doesn't seem to have picked up any debugging symbols. Those function names would be from the exports and I don't trust any of them.
This does tell us that the crash doesn't seem to be mscoree-related, as it's not still in mscoree's load callback. Assuming you are using the binaries of Wine Mono 5.1.0 from winehq, I should be able to figure out the libmono-2.0-x86 part of it from the address, at least.