I am using the opentelemetry-proto crate to serialize incoming OpenTelemetry metrics data. The crate defines certain fields (count, bucket_counts under HistogramDataPoint) as u64. However, the OpenTelemetry exporter sends these fields as strings, which leads to serialization failures.

This mismatch between the data types in the crate and the incoming data prevents successful serialization of metrics.

Sample JSON
otel-metrics-histogram.json

Similar issue is found in the ExponentialHistogramDataPoint