Tcmalloc error running rspec spec using ree

I’m using ree via rvm. Everything was just installed.

In autotest, the tests won’t even start to run. When I run rspec
spec, the tests will run, but will crash at some point here:
src/tcmalloc.cc:390] Attempt to free invalid pointer: 0x10022d9a0

I’m not really sure where to look. Any recommendations?