You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/diem/secure/push-metrics/src
    
    the code of the file until where you have to start completion: // Copyright (c) The Diem Core Contributors
// SPDX-License-Identifier: Apache-2.0

#![forbid(unsafe_code)]

// Re-export counter types from prometheus crate
pub use diem_metri
    
    fn push(push_metrics_endpoint: &str) {
        let mut buffer = Vec::new();

        if let Err(e) = TextEncoder::new().encode(&diem_metrics_core::gather(), &mut buffer) {
            error!("Failed to encode push metrics: {}.", e.to_string());
        } else {
            let response = ureq::post(push_metrics_endpoint)
                .timeout_connect(10_000)
                .send_bytes(&buffer);
            if let Some(error) = response.synthetic_error() {
                error!(
                    "Failed to push metrics to {}. Error: {}",
                    push_metrics_endpoint, error
                );
            }
        }
    }