update test workflow to ubuntu 20.04 · livepeer/go-livepeer@db0421f

var mistJson should be mistJSON

should replace realTimeSegCount += 1 with realTimeSegCount++

should replace errors.New(fmt.Sprintf(...)) with fmt.Errorf(...)

this block is empty, you can remove it

should replace cliPort += 1 with cliPort++

should replace errors.New(fmt.Sprintf(...)) with fmt.Errorf(...)

should replace errors.New(fmt.Sprintf(...)) with fmt.Errorf(...)

if block ends with a return statement, so drop this else and outdent its block

if block ends with a return statement, so drop this else and outdent its block

struct field Url should be URL

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