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This PR fixes the otlp_tracing example compile issues with latest opentelemetry crate.
It required a slightly different approach to set up the tracer. The examples from tracing-opentelemetry crate were useful.
One other side of the problem was that
jaeger
didn't receive the traces from the example anymore and it turns out it is because of the log filtering. So, using a differentRUST_LOG
should suffice.The new test added sets up a TcpListener that binds to the same address the tracer subscriber does so it is able to receive the traces so it can validate whether the example runs correctly