4 files changed, 10 insertions, 11 deletions
diff --git a/src/cmd/trace/annotations_test.go b/src/cmd/trace/annotations_test.go
index a9068d53c1..9c2d027366 100644
--- a/src/cmd/trace/annotations_test.go
+++ b/src/cmd/trace/annotations_test.go
@@ -12,7 +12,7 @@ import (
 	"flag"
 	"fmt"
 	traceparser "internal/trace"
-	"io/ioutil"
+	"os"
 	"reflect"
 	"runtime/debug"
 	"runtime/trace"
@@ -386,7 +386,7 @@ func saveTrace(buf *bytes.Buffer, name string) {
 	if !*saveTraces {
 		return
 	}
-	if err := ioutil.WriteFile(name+".trace", buf.Bytes(), 0600); err != nil {
+	if err := os.WriteFile(name+".trace", buf.Bytes(), 0600); err != nil {
 		panic(fmt.Errorf("failed to write trace file: %v", err))
 	}
 }
diff --git a/src/cmd/trace/pprof.go b/src/cmd/trace/pprof.go
index a31d71b013..a73ff5336a 100644
--- a/src/cmd/trace/pprof.go
+++ b/src/cmd/trace/pprof.go
@@ -11,7 +11,6 @@ import (
 	"fmt"
 	"internal/trace"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
@@ -294,7 +293,7 @@ func serveSVGProfile(prof func(w io.Writer, r *http.Request) error) http.Handler
 			return
 		}
 
-		blockf, err := ioutil.TempFile("", "block")
+		blockf, err := os.CreateTemp("", "block")
 		if err != nil {
 			http.Error(w, fmt.Sprintf("failed to create temp file: %v", err), http.StatusInternalServerError)
 			return
diff --git a/src/cmd/trace/trace_test.go b/src/cmd/trace/trace_test.go
index dd12e8cd20..ea0cc6f880 100644
--- a/src/cmd/trace/trace_test.go
+++ b/src/cmd/trace/trace_test.go
@@ -10,7 +10,7 @@ import (
 	"cmd/internal/traceviewer"
 	"context"
 	"internal/trace"
-	"io/ioutil"
+	"io"
 	rtrace "runtime/trace"
 	"strings"
 	"sync"
@@ -78,7 +78,7 @@ func TestGoroutineCount(t *testing.T) {
 
 	// Use the default viewerDataTraceConsumer but replace
 	// consumeViewerEvent to intercept the ViewerEvents for testing.
-	c := viewerDataTraceConsumer(ioutil.Discard, 0, 1<<63-1)
+	c := viewerDataTraceConsumer(io.Discard, 0, 1<<63-1)
 	c.consumeViewerEvent = func(ev *traceviewer.Event, _ bool) {
 		if ev.Name == "Goroutines" {
 			cnt := ev.Arg.(*goroutineCountersArg)
@@ -131,7 +131,7 @@ func TestGoroutineFilter(t *testing.T) {
 		gs:      map[uint64]bool{10: true},
 	}
 
-	c := viewerDataTraceConsumer(ioutil.Discard, 0, 1<<63-1)
+	c := viewerDataTraceConsumer(io.Discard, 0, 1<<63-1)
 	if err := generateTrace(params, c); err != nil {
 		t.Fatalf("generateTrace failed: %v", err)
 	}
@@ -163,7 +163,7 @@ func TestPreemptedMarkAssist(t *testing.T) {
 		endTime: int64(1<<63 - 1),
 	}
 
-	c := viewerDataTraceConsumer(ioutil.Discard, 0, 1<<63-1)
+	c := viewerDataTraceConsumer(io.Discard, 0, 1<<63-1)
 
 	marks := 0
 	c.consumeViewerEvent = func(ev *traceviewer.Event, _ bool) {
@@ -214,7 +214,7 @@ func TestFoo(t *testing.T) {
 		tasks:     []*taskDesc{task},
 	}
 
-	c := viewerDataTraceConsumer(ioutil.Discard, 0, 1<<63-1)
+	c := viewerDataTraceConsumer(io.Discard, 0, 1<<63-1)
 
 	var logBeforeTaskEnd, logAfterTaskEnd bool
 	c.consumeViewerEvent = func(ev *traceviewer.Event, _ bool) {
diff --git a/src/cmd/trace/trace_unix_test.go b/src/cmd/trace/trace_unix_test.go
index 645978e0f8..c569b40bb2 100644
--- a/src/cmd/trace/trace_unix_test.go
+++ b/src/cmd/trace/trace_unix_test.go
@@ -10,7 +10,7 @@ import (
 	"bytes"
 	"cmd/internal/traceviewer"
 	traceparser "internal/trace"
-	"io/ioutil"
+	"io"
 	"runtime"
 	"runtime/trace"
 	"sync"
@@ -83,7 +83,7 @@ func TestGoroutineInSyscall(t *testing.T) {
 
 	// Check only one thread for the pipe read goroutine is
 	// considered in-syscall.
-	c := viewerDataTraceConsumer(ioutil.Discard, 0, 1<<63-1)
+	c := viewerDataTraceConsumer(io.Discard, 0, 1<<63-1)
 	c.consumeViewerEvent = func(ev *traceviewer.Event, _ bool) {
 		if ev.Name == "Threads" {
 			arg := ev.Arg.(*threadCountersArg)