Make test pass with old Mercurial < 3
Make test pass with old Mercurial < 3

pv/asv,qwhelan/asv,airspeed-velocity/asv,spacetelescope/asv,qwhelan/asv,airspeed-velocity/asv,qwhelan/asv,qwhelan/asv,airspeed-velocity/asv,spacetelescope/asv,spacetelescope/asv,pv/asv,spacetelescope/asv,pv/asv,airspeed-velocity/asv,pv/asv