message: Do not pull `exponential_bucktets` into scope in `memory_metrics`
diff: use datasize::DataSize;
  -use prometheus::{exponential_buckets, Histogram, HistogramOpts, IntGauge, Registry};
  +use prometheus::{self, Histogram, HistogramOpts, IntGauge, Registry};
  use rand::{CryptoRng, Rng};
  use tracing::debug;
  @@ -97,7 +97,7 @@ impl MemoryMetrics {
  "time taken to estimate memory usage, in seconds",
  )
  // Create buckets from one nanosecond to eight seconds.
  - .buckets(exponential_buckets(0.000_000_004, 2.0, 32)?),
  + .buckets(prometheus::exponential_buckets(0.000_000_004, 2.0, 32)?),
  )?;
  registry.register(Box::new(mem_total.clone()))?;
  