chore: typo

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/gorilla/mux v1.8.1
 	github.com/justinas/alice v1.2.0
 	github.com/prometheus/client_golang v1.18.0
+	github.com/prometheus/client_model v0.5.0
 	github.com/segmentio/ksuid v1.0.4
 	github.com/spf13/cast v1.6.0
 	github.com/spf13/pflag v1.0.5
@@ -78,7 +79,6 @@ require (
 	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/client_model v0.5.0 // indirect
 	github.com/prometheus/common v0.46.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/sagikazarmark/locafero v0.4.0 // indirect

workerPool.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"net"
 	"net/http"
+	"net/url"
 	"strconv"
 	"strings"
 	"sync"
@@ -138,8 +139,10 @@ func getDoErrReason(err error) string {
 		return opErrReason
 	} else if errors.Is(err, net.UnknownNetworkError("")) {
 		return networkErrReason
-	} else if err := errors.Unwrap(err).Error(); strings.TrimSpace(strings.ToLower(err)) == "eof" {
-		return connectionUnexpectedlyClosedEOFReason
+	} else if err, ok := err.(*url.Error); ok {
+		if strings.TrimSpace(strings.ToLower(err.Unwrap().Error())) == "eof" {
+			return connectionUnexpectedlyClosedEOFReason
+		}
 	}
 
 	return genericDoReason