Debug implementation of gstreamer::message::Error is not very useful

Here is the current Debug output of message::Error:

Error(Message { ptr: 0x7fdaf400ab50, type: "error", seqnum: 380, src: Some("rtmp2sink0"), structure: Some(GstMessageError { gerror: (GError) ((GError*) 0x7fdaf4002820), debug: (gchararray) "../subprojects/gst-plugins-bad/gst/rtmp2/gstrtmp2sink.c(1117): send_connect_error (): /GstPipeline:10-destination-rtmp://amsterdamX.onestream.studio/live/live_1187894_fkxjcqbjh/GstRtmp2Sink:rtmp2sink0:\ndomain g-resolver-error-quark, code 0" }) })

It's not very useful as we don't see the actual message. It's also a bit unfortunate as errors is typically something one may want to log.

We also have this pattern in a lot of examples displaying errors.

How could we make this easier?

• Manually implement Debug and return a debug_struct with error, debug, details. This would make debug output more convenient but means we'll have to manually implement Debug for all MessageView types as it's currently derived in the macro.
• Manually implement Display returning something like this ? Could be more convenient as it can be logged directly.

Any other idea?

The same apply for message::Warning and message::Info.