Fixed negative waiting time in verbose mode. Closes #2175
Fixed negative waiting time in verbose mode. Closes #2175

jangorecki/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,vlulla/data.table,jangorecki/data.table