ODU's MemGator instance is returning an HTML authentication page.
https://memgator.cs.odu.edu/timemap/json/https://www.cs.odu.edu/~mln/

Mink reports this as an "error fetching" despite the 200, so never resolves. This should be a case for a fall-through aggregator.
EDIT: I encountered this issue when testing for the HEAD of the issue-316 branch (MV3 migration).
ODU's MemGator instance is returning an HTML authentication page.
https://memgator.cs.odu.edu/timemap/json/https://www.cs.odu.edu/~mln/

Mink reports this as an "error fetching" despite the 200, so never resolves. This should be a case for a fall-through aggregator.
EDIT: I encountered this issue when testing for the HEAD of the issue-316 branch (MV3 migration).