Imaginary log level `trace`

[ashald]

I believe examples below explain it best:

$ makisu -h | grep level
      --log-level string    Verbose level of logs. Valid values are "trace", "debug", "info", "warn", "error", "fatal" (default "info")

$ makisu -h | grep level | grep trace
      --log-level string    Verbose level of logs. Valid values are "trace", "debug", "info", "warn", "error", "fatal" (default "info")

$ makisu --log-level=trace
configure logger: parse log level: unrecognized level: "trace"