1 files changed, 5 insertions, 4 deletions

diff --git a/collector/processes_linux.go b/collector/processes_linux.go
index 3d64cbd..3d4e95d 100644
--- a/collector/processes_linux.go
+++ b/collector/processes_linux.go
@@ -16,6 +16,7 @@
 package collector
 
 import (
+        "errors"
         "fmt"
         "os"
 
@@ -75,13 +76,13 @@ func NewProcessStatCollector(logger log.Logger) (Collector, error) {
 func (c *processCollector) Update(ch chan<- prometheus.Metric) error {
         pids, states, threads, err := c.getAllocatedThreads()
         if err != nil {
-                return fmt.Errorf("unable to retrieve number of allocated threads: %q", err)
+                return fmt.Errorf("unable to retrieve number of allocated threads: %w", err)
         }
 
         ch <- prometheus.MustNewConstMetric(c.threadAlloc, prometheus.GaugeValue, float64(threads))
         maxThreads, err := readUintFromFile(procFilePath("sys/kernel/threads-max"))
         if err != nil {
-                return fmt.Errorf("unable to retrieve limit number of threads: %q", err)
+                return fmt.Errorf("unable to retrieve limit number of threads: %w", err)
         }
         ch <- prometheus.MustNewConstMetric(c.threadLimit, prometheus.GaugeValue, float64(maxThreads))
 
@@ -91,7 +92,7 @@ func (c *processCollector) Update(ch chan<- prometheus.Metric) error {
 
         pidM, err := readUintFromFile(procFilePath("sys/kernel/pid_max"))
         if err != nil {
-                return fmt.Errorf("unable to retrieve limit number of maximum pids alloved: %q", err)
+                return fmt.Errorf("unable to retrieve limit number of maximum pids alloved: %w", err)
         }
         ch <- prometheus.MustNewConstMetric(c.pidUsed, prometheus.GaugeValue, float64(pids))
         ch <- prometheus.MustNewConstMetric(c.pidMax, prometheus.GaugeValue, float64(pidM))
@@ -110,7 +111,7 @@ func (c *processCollector) getAllocatedThreads() (int, map[string]int32, int, er
         for _, pid := range p {
                 stat, err := pid.Stat()
                 // PIDs can vanish between getting the list and getting stats.
-                if os.IsNotExist(err) {
+                if errors.Is(err, os.ErrNotExist) {
                         level.Debug(c.logger).Log("msg", "file not found when retrieving stats for pid", "pid", pid, "err", err)
                         continue
                 }