prometheus 0.13.4

Prometheus instrumentation library for Rust applications.
Documentation
# Prometheus Rust client library

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This is the [Rust](https://www.rust-lang.org) client library for
[Prometheus](http://prometheus.io). The main data structures and APIs are ported
from [Go client](https://github.com/prometheus/client_golang).

## Documentation

Find the latest documentation at <https://docs.rs/prometheus>.

## Advanced

### Crate features

This crate provides several optional components which can be enabled via [Cargo `[features]`](https://doc.rust-lang.org/cargo/reference/features.html):

- `gen`: To generate protobuf client with the latest protobuf version instead of
  using the pre-generated client.

- `nightly`: Enable nightly only features.

- `process`: Enable [process metrics]https://prometheus.io/docs/instrumenting/writing_clientlibs/#process-metrics support.

- `push`: Enable [push metrics]https://prometheus.io/docs/instrumenting/pushing/ support.

### Static Metric

When using a `MetricVec` with label values known at compile time
prometheus-static-metric reduces the overhead of retrieving the concrete
`Metric` from a `MetricVec`.

See [static-metric](./static-metric) directory for details.

## Thanks

- [brian-brazil]https://github.com/brian-brazil
- [ccmtaylor]https://github.com/ccmtaylor
- [kamalmarhubi]https://github.com/kamalmarhubi
- [lucab]https://github.com/lucab
- [koushiro]https://github.com/koushiro