Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.
Error: SOOT-0.17/lib/SOOT/Examples/Basic.pod -- Around line 1538: Non-ASCII character seen before =encoding in '$pt1->AddText("KÃ¼nstler'. Assuming UTF-8 SOOT-0.17/lib/SOOT/Examples/Graph.pod -- Around line 467: Non-ASCII character seen before =encoding in 'plotting. '. Assuming CP1252
List all used modules in META.yml requires