try to fix https://travis-ci.org/grzegorzmazur/yacas/jobs/135025175
try to fix https://travis-ci.org/grzegorzmazur/yacas/jobs/135025175
qwert2003/yacas,grzegorzmazur/yacas,qwert2003/yacas,martanoga/yacas,qwert2003/yacas,qwert2003/yacas,martanoga/yacas,qwert2003/yacas,martanoga/yacas,qwert2003/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,martanoga/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,martanoga/yacas,martanoga/yacas,qwert2003/yacas,martanoga/yacas,grzegorzmazur/yacas