Fix CI

Author: corny

.github/workflows/build.yml

@@ -11,13 +11,13 @@ jobs:
     steps:
 
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v5
       with:
         go-version: ^1.20
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v5
 
     - name: Build commands
       run: .github/build-all
@@ -26,6 +26,6 @@ jobs:
       run: sudo go test -v -coverprofile coverage.txt ./...
 
     - name: Upload coverage report
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v5
       with:
-        file: coverage.txt
+        files: coverage.txt

.github/workflows/golangci-lint.yml

@@ -9,11 +9,11 @@ jobs:
     name: lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
         with:
           go-version: ^1.20
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v8
         with:
-          version: v1.51
+          version: v2.4.0

.golangci.yml

@@ -1,7 +1,24 @@
-issues:
-  # Excluding configuration per-path, per-linter, per-text and per-source
-  exclude-rules:
-    # Exclude some linters from running on tests files.
-    - path: \.go
-      linters:
-        - errcheck
+version: "2"
+linters:
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
+      - linters:
+          - errcheck
+        path: \.go
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

cmd/multiping/destination.go

@@ -92,7 +92,8 @@ func (s *history) compute() (st stat) {
 
 	stddevNum := float64(0)
 	for _, rtt := range collection {
-		stddevNum += math.Pow(float64(rtt-st.mean), 2)
+		dev := float64(rtt - st.mean)
+		stddevNum += dev * dev
 	}
 	st.stddev = time.Duration(math.Sqrt(stddevNum / float64(size)))
 

monitor/history.go

@@ -100,7 +100,8 @@ func (h *History) compute() *Metrics {
 	size := float64(numTotal - numFailure)
 	mean = total / size
 	for _, rtt := range data {
-		sumSquares += math.Pow(rtt-mean, 2)
+		diff := rtt - mean
+		sumSquares += diff * diff
 	}
 	stddev = math.Sqrt(sumSquares / size)