/usr/lib/tracker/tracker-extract:6:mem_error:slab_allocator_free_chunk:magazine_cache_trim:magazine_cache_push_magazine:thread_memory_magazine2_unload

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding tracker. This problem was most recently seen with package version 2.1.6-1, the problem page at https://errors.ubuntu.com/problem/b99e01aacdc0c848c2170270ddbb577546a03a73 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.