Fixed log.warn() and log.fail, but blocking on a way for tests to call a method to abort themselves and hand execution control back to the runner.
Fixed log.warn() and log.fail, but blocking on a way for tests to call
a method to abort themselves and hand execution control back to the runner.

kdmurray91/ooni-probe,juga0/ooni-probe,0xPoly/ooni-probe,juga0/ooni-probe,kdmurray91/ooni-probe,kdmurray91/ooni-probe,Karthikeyan-kkk/ooni-probe,juga0/ooni-probe,Karthikeyan-kkk/ooni-probe,0xPoly/ooni-probe,lordappsec/ooni-probe,0xPoly/ooni-probe,Karthikeyan-kkk/ooni-probe,kdmurray91/ooni-probe,lordappsec/ooni-probe,Karthikeyan-kkk/ooni-probe,juga0/ooni-probe,lordappsec/ooni-probe,0xPoly/ooni-probe,lordappsec/ooni-probe