t/01-basic.t .. 1..4 Cannot replace non-existent sub (MyObj::log_warn) at t/01-basic.t line 15. BEGIN failed--compilation aborted at t/01-basic.t line 16. # Looks like your test exited with 255 before it could output anything. Dubious, test returned 255 (wstat 65280, 0xff00) Failed 4/4 subtests Test Summary Report ------------------- t/01-basic.t (Wstat: 65280 Tests: 0 Failed: 0) Non-zero exit status: 255 Parse errors: Bad plan. You planned 4 tests but ran 0.