Rust version bump, address new clippy warnings

.github/workflows/clippy.yml

@@ -4,6 +4,11 @@ jobs:
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - 1.65.0
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2

.github/workflows/grcov.yml

@@ -9,6 +9,9 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
+        rust:
+          - stable
+          - 1.65.0
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/release.yml

@@ -26,7 +26,9 @@ jobs:
             rust: stable
           - build: windows
             os: windows-latest
-            rust: stable
+            rust:
+              - stable
+              - 1.65.0
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/tests.yml

@@ -8,6 +8,11 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - 1.65.0
 
     steps:
     - uses: actions/checkout@v2

Cargo.toml

@@ -3,7 +3,7 @@ name = "perf-gauge"
 version = "0.1.18"
 authors = ["Eugene Retunsky"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
 publish = true
 readme = "README.md"
 repository = "https://github.com/xnuter/perf-gauge"

src/metrics.rs

@@ -356,9 +356,9 @@ impl DefaultConsoleReporter {
     }
 
     fn build_item_report(&self, metrics: &BenchRunMetricsItem) -> BenchRunReportItem {
-        let successful_requests = metrics.successful_requests as usize;
-        let total_requests = metrics.total_requests as usize;
-        let total_bytes = metrics.total_bytes as usize;
+        let successful_requests = metrics.successful_requests;
+        let total_requests = metrics.total_requests;
+        let total_bytes = metrics.total_bytes;
         let duration = Instant::now().duration_since(metrics.bench_begin);
         BenchRunReportItem {
             test_case_name: self

src/prometheus_reporter.rs

@@ -197,7 +197,7 @@ impl PrometheusReporter {
 
         for i in 0..buckets.len() {
             for _ in 0..counts[i] {
-                prometheus_histogram.observe(buckets[i] as f64);
+                prometheus_histogram.observe(buckets[i]);
             }
         }