You currently would have to know that:

A) The binaries with debug symbols are attached to the resmoke_tests task

B) That `db-contrib-tool symbolize` does not know about binaries built in resmoke_tests, and you need to do it manually with bazel-<mongo>/external/mongo_toolchain_v5/stow/llvm-v5/bin/llvm-symbolizer

Both of these should be fixed, and updated instructions attached to the test in the "unsymbolized_stacktrace_instructions.txt"