1 files changed, 6 insertions, 5 deletions

diff --git a/collector/netstat_linux.go b/collector/netstat_linux.go
index 9b4be49..6fac050 100644
--- a/collector/netstat_linux.go
+++ b/collector/netstat_linux.go
@@ -17,6 +17,7 @@ package collector
 
 import (
         "bufio"
+        "errors"
         "fmt"
         "io"
         "os"
@@ -59,15 +60,15 @@ func NewNetStatCollector(logger log.Logger) (Collector, error) {
 func (c *netStatCollector) Update(ch chan<- prometheus.Metric) error {
         netStats, err := getNetStats(procFilePath("net/netstat"))
         if err != nil {
-                return fmt.Errorf("couldn't get netstats: %s", err)
+                return fmt.Errorf("couldn't get netstats: %w", err)
         }
         snmpStats, err := getNetStats(procFilePath("net/snmp"))
         if err != nil {
-                return fmt.Errorf("couldn't get SNMP stats: %s", err)
+                return fmt.Errorf("couldn't get SNMP stats: %w", err)
         }
         snmp6Stats, err := getSNMP6Stats(procFilePath("net/snmp6"))
         if err != nil {
-                return fmt.Errorf("couldn't get SNMP6 stats: %s", err)
+                return fmt.Errorf("couldn't get SNMP6 stats: %w", err)
         }
         // Merge the results of snmpStats into netStats (collisions are possible, but
         // we know that the keys are always unique for the given use case).
@@ -82,7 +83,7 @@ func (c *netStatCollector) Update(ch chan<- prometheus.Metric) error {
                         key := protocol + "_" + name
                         v, err := strconv.ParseFloat(value, 64)
                         if err != nil {
-                                return fmt.Errorf("invalid value %s in netstats: %s", value, err)
+                                return fmt.Errorf("invalid value %s in netstats: %w", value, err)
                         }
                         if !c.fieldPattern.MatchString(key) {
                                 continue
@@ -140,7 +141,7 @@ func getSNMP6Stats(fileName string) (map[string]map[string]string, error) {
         if err != nil {
                 // On systems with IPv6 disabled, this file won't exist.
                 // Do nothing.
-                if os.IsNotExist(err) {
+                if errors.Is(err, os.ErrNotExist) {
                         return nil, nil
                 }