more logging when keytar op fails (#1406)
more logging when keytar op fails (#1406)


playi/pxt,switchinnovations/pxt,switch-education/pxt,playi/pxt,playi/pxt,Microsoft/pxt,Microsoft/pxt,switch-education/pxt,switchinnovations/pxt,switchinnovations/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,switchinnovations/pxt,switch-education/pxt