Slic3r fill.t build failure

perl Build.PL
All prerequisites satisfied
t/angles.t ........... ok
t/arcs.t ............. ok
t/clean_polylines.t .. ok
t/clipper.t .......... ok
t/collinear.t ........ ok
t/combineinfill.t .... ok
t/custom_gcode.t ..... ok
t/dynamic.t .......... skipped: variable-width paths are currently disabled
t/fill.t ............. 1/9
#   Failed test 'one continuous path'
#   at t/fill.t line 41.
#          got: '21'
#     expected: '1'
t/fill.t ............. 9/9 # Looks like you failed 1 test of 9.
t/fill.t ............. Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/9 subtests
t/gcode.t ............ ok
t/geometry.t ......... ok
t/layers.t ........... ok
t/loops.t ............ ok
t/polyclip.t ......... ok
t/retraction.t ....... ok
t/serialize.t ........ ok
t/shells.t ........... ok
t/slice.t ............ ok
t/support.t .......... ok
t/vibrationlimit.t ... ok

Test Summary Report
-------------------
t/fill.t           (Wstat: 256 Tests: 9 Failed: 1)
  Failed test:  3
  Non-zero exit status: 1
Files=20, Tests=177, 49 wallclock secs ( 0.11 usr  0.04 sys + 53.53 cusr  0.79 csys = 54.47 CPU)
Result: FAIL
Failed 1/20 test programs. 1/177 subtests failed.