all: use any instead of interface{}

Any is the preferred over interface{} now in Go.

13 files changed, 57 insertions, 57 deletions

diff --git a/dashboard/app/api.go b/dashboard/app/api.go
index 1e7d655c4..c7539c5f5 100644
--- a/dashboard/app/api.go
+++ b/dashboard/app/api.go
@@ -77,8 +77,8 @@ var apiHandlers = map[string]APIHandler{
 	"log_to_repro":          nsHandler(apiLogToReproduce),
 }
 
-type JSONHandler func(c context.Context, r *http.Request) (interface{}, error)
-type APIHandler func(c context.Context, payload io.Reader) (interface{}, error)
+type JSONHandler func(c context.Context, r *http.Request) (any, error)
+type APIHandler func(c context.Context, payload io.Reader) (any, error)
 
 const (
 	maxReproPerBug   = 10
@@ -126,7 +126,7 @@ func handleJSON(fn JSONHandler) http.Handler {
 	})
 }
 
-func handleAPI(c context.Context, r *http.Request) (interface{}, error) {
+func handleAPI(c context.Context, r *http.Request) (any, error) {
 	client := r.PostFormValue("client")
 	method := r.PostFormValue("method")
 	log.Infof(c, "api %q from %q", method, client)
@@ -178,7 +178,7 @@ func contextNamespace(c context.Context) string {
 // gcsPayloadHandler json.Decode the gcsURL from payload and stream pointed content.
 // This function streams ungzipped content in order to be aligned with other wrappers/handlers.
 func gcsPayloadHandler(handler APIHandler) APIHandler {
-	return func(c context.Context, payload io.Reader) (interface{}, error) {
+	return func(c context.Context, payload io.Reader) (any, error) {
 		var gcsURL string
 		if err := json.NewDecoder(payload).Decode(&gcsURL); err != nil {
 			return nil, fmt.Errorf("json.NewDecoder(payload).Decode(&gcsURL): %w", err)
@@ -216,7 +216,7 @@ func nsHandler[Req any](handler func(context.Context, string, *Req) (any, error)
 }
 
 func typedHandler[Req any](handler func(context.Context, *Req) (any, error)) APIHandler {
-	return func(ctx context.Context, payload io.Reader) (interface{}, error) {
+	return func(ctx context.Context, payload io.Reader) (any, error) {
 		req := new(Req)
 		if payload != nil {
 			if err := json.NewDecoder(payload).Decode(req); err != nil {
@@ -227,12 +227,12 @@ func typedHandler[Req any](handler func(context.Context, *Req) (any, error)) API
 	}
 }
 
-func apiLogError(c context.Context, req *dashapi.LogEntry) (interface{}, error) {
+func apiLogError(c context.Context, req *dashapi.LogEntry) (any, error) {
 	log.Errorf(c, "%v: %v", req.Name, req.Text)
 	return nil, nil
 }
 
-func apiBuilderPoll(c context.Context, ns string, req *dashapi.BuilderPollReq) (interface{}, error) {
+func apiBuilderPoll(c context.Context, ns string, req *dashapi.BuilderPollReq) (any, error) {
 	bugs, _, err := loadAllBugs(c, func(query *db.Query) *db.Query {
 		return query.Filter("Namespace=", ns).
 			Filter("Status<", BugStatusFixed)
@@ -277,7 +277,7 @@ func reportEmail(c context.Context, ns string) string {
 	return ""
 }
 
-func apiCommitPoll(c context.Context, ns string, req *any) (interface{}, error) {
+func apiCommitPoll(c context.Context, ns string, req *any) (any, error) {
 	resp := &dashapi.CommitPollResp{
 		ReportEmail: reportEmail(c, ns),
 	}
@@ -343,7 +343,7 @@ func pollBackportCommits(c context.Context, ns string, count int) ([]string, err
 	return backportTitles, nil
 }
 
-func apiUploadCommits(c context.Context, ns string, req *dashapi.CommitPollResultReq) (interface{}, error) {
+func apiUploadCommits(c context.Context, ns string, req *dashapi.CommitPollResultReq) (any, error) {
 	// This adds fixing commits to bugs.
 	err := addCommitsToBugs(c, ns, "", nil, req.Commits)
 	if err != nil {
@@ -444,7 +444,7 @@ func addCommitInfoToBugImpl(c context.Context, bug *Bug, com dashapi.Commit) (bo
 	return changed, nil
 }
 
-func apiJobPoll(c context.Context, req *dashapi.JobPollReq) (interface{}, error) {
+func apiJobPoll(c context.Context, req *dashapi.JobPollReq) (any, error) {
 	if stop, err := emergentlyStopped(c); err != nil || stop {
 		// The bot's operation was aborted. Don't accept new crash reports.
 		return &dashapi.JobPollResp{}, err
@@ -455,17 +455,17 @@ func apiJobPoll(c context.Context, req *dashapi.JobPollReq) (interface{}, error)
 	return pollPendingJobs(c, req.Managers)
 }
 
-func apiJobDone(c context.Context, req *dashapi.JobDoneReq) (interface{}, error) {
+func apiJobDone(c context.Context, req *dashapi.JobDoneReq) (any, error) {
 	err := doneJob(c, req)
 	return nil, err
 }
 
-func apiJobReset(c context.Context, req *dashapi.JobResetReq) (interface{}, error) {
+func apiJobReset(c context.Context, req *dashapi.JobResetReq) (any, error) {
 	err := resetJobs(c, req)
 	return nil, err
 }
 
-func apiUploadBuild(c context.Context, ns string, req *dashapi.Build) (interface{}, error) {
+func apiUploadBuild(c context.Context, ns string, req *dashapi.Build) (any, error) {
 	now := timeNow(c)
 	_, isNewBuild, err := uploadBuild(c, now, ns, req, BuildNormal)
 	if err != nil {
@@ -732,7 +732,7 @@ func managerList(c context.Context, ns string) ([]string, error) {
 	return managers, nil
 }
 
-func apiReportBuildError(c context.Context, ns string, req *dashapi.BuildErrorReq) (interface{}, error) {
+func apiReportBuildError(c context.Context, ns string, req *dashapi.BuildErrorReq) (any, error) {
 	now := timeNow(c)
 	build, _, err := uploadBuild(c, now, ns, &req.Build, BuildFailed)
 	if err != nil {
@@ -762,7 +762,7 @@ const (
 	suppressedReportTitle = "suppressed report"
 )
 
-func apiReportCrash(c context.Context, ns string, req *dashapi.Crash) (interface{}, error) {
+func apiReportCrash(c context.Context, ns string, req *dashapi.Crash) (any, error) {
 	if stop, err := emergentlyStopped(c); err != nil || stop {
 		// The bot's operation was aborted. Don't accept new crash reports.
 		return &dashapi.ReportCrashResp{}, err
@@ -1067,7 +1067,7 @@ func purgeOldCrashes(c context.Context, bug *Bug, bugKey *db.Key) {
 	log.Infof(c, "deleted %v crashes for bug %q", deleted, bug.Title)
 }
 
-func apiReportFailedRepro(c context.Context, ns string, req *dashapi.CrashID) (interface{}, error) {
+func apiReportFailedRepro(c context.Context, ns string, req *dashapi.CrashID) (any, error) {
 	req.Title = canonicalizeCrashTitle(req.Title, req.Corrupted, req.Suppressed)
 	bug, err := findExistingBugForCrash(c, ns, []string{req.Title})
 	if err != nil {
@@ -1134,7 +1134,7 @@ func saveReproAttempt(c context.Context, bug *Bug, build *Build, log []byte) err
 	return nil
 }
 
-func apiNeedRepro(c context.Context, ns string, req *dashapi.CrashID) (interface{}, error) {
+func apiNeedRepro(c context.Context, ns string, req *dashapi.CrashID) (any, error) {
 	if req.Corrupted {
 		resp := &dashapi.NeedReproResp{
 			NeedRepro: false,
@@ -1182,7 +1182,7 @@ func normalizeCrashTitle(title string) string {
 	return strings.TrimSpace(limitLength(title, maxTextLen))
 }
 
-func apiManagerStats(c context.Context, ns string, req *dashapi.ManagerStatsReq) (interface{}, error) {
+func apiManagerStats(c context.Context, ns string, req *dashapi.ManagerStatsReq) (any, error) {
 	now := timeNow(c)
 	err := updateManager(c, ns, req.Name, func(mgr *Manager, stats *ManagerStats) error {
 		mgr.Link = req.Addr
@@ -1203,7 +1203,7 @@ func apiManagerStats(c context.Context, ns string, req *dashapi.ManagerStatsReq)
 	return nil, err
 }
 
-func apiUpdateReport(c context.Context, ns string, req *dashapi.UpdateReportReq) (interface{}, error) {
+func apiUpdateReport(c context.Context, ns string, req *dashapi.UpdateReportReq) (any, error) {
 	bug := new(Bug)
 	bugKey := db.NewKey(c, "Bug", req.BugID, 0, nil)
 	if err := db.Get(c, bugKey, bug); err != nil {
@@ -1229,7 +1229,7 @@ func apiUpdateReport(c context.Context, ns string, req *dashapi.UpdateReportReq)
 	return nil, runInTransaction(c, tx, nil)
 }
 
-func apiBugList(c context.Context, ns string, req *any) (interface{}, error) {
+func apiBugList(c context.Context, ns string, req *any) (any, error) {
 	keys, err := db.NewQuery("Bug").
 		Filter("Namespace=", ns).
 		KeysOnly().
@@ -1244,7 +1244,7 @@ func apiBugList(c context.Context, ns string, req *any) (interface{}, error) {
 	return resp, nil
 }
 
-func apiLoadBug(c context.Context, ns string, req *dashapi.LoadBugReq) (interface{}, error) {
+func apiLoadBug(c context.Context, ns string, req *dashapi.LoadBugReq) (any, error) {
 	bug := new(Bug)
 	bugKey := db.NewKey(c, "Bug", req.ID, 0, nil)
 	if err := db.Get(c, bugKey, bug); err != nil {
@@ -1256,7 +1256,7 @@ func apiLoadBug(c context.Context, ns string, req *dashapi.LoadBugReq) (interfac
 	return loadBugReport(c, bug)
 }
 
-func apiLoadFullBug(c context.Context, req *dashapi.LoadFullBugReq) (interface{}, error) {
+func apiLoadFullBug(c context.Context, req *dashapi.LoadFullBugReq) (any, error) {
 	bug, bugKey, err := findBugByReportingID(c, req.BugID)
 	if err != nil {
 		return nil, fmt.Errorf("failed to find the bug: %w", err)
@@ -1282,7 +1282,7 @@ func loadBugReport(c context.Context, bug *Bug) (*dashapi.BugReport, error) {
 	return createBugReport(c, bug, crash, crashKey, bugReporting, reporting)
 }
 
-func apiAddBuildAssets(c context.Context, ns string, req *dashapi.AddBuildAssetsReq) (interface{}, error) {
+func apiAddBuildAssets(c context.Context, ns string, req *dashapi.AddBuildAssetsReq) (any, error) {
 	assets := []Asset{}
 	for i, toAdd := range req.Assets {
 		asset, err := parseIncomingAsset(c, toAdd, ns)
@@ -1323,7 +1323,7 @@ func parseIncomingAsset(c context.Context, newAsset dashapi.NewAsset, ns string)
 	}, nil
 }
 
-func apiNeededAssetsList(c context.Context, req *any) (interface{}, error) {
+func apiNeededAssetsList(c context.Context, req *any) (any, error) {
 	return queryNeededAssets(c)
 }
 
@@ -1704,7 +1704,7 @@ func handleRefreshSubsystems(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func apiSaveDiscussion(c context.Context, req *dashapi.SaveDiscussionReq) (interface{}, error) {
+func apiSaveDiscussion(c context.Context, req *dashapi.SaveDiscussionReq) (any, error) {
 	d := req.Discussion
 	newBugIDs := []string{}
 	for _, id := range d.BugIDs {
@@ -1743,7 +1743,7 @@ func recordEmergencyStop(c context.Context) error {
 // Share crash logs for non-reproduced bugs with syz-managers.
 // In future, this can also take care of repro exchange between instances
 // in the place of syz-hub.
-func apiLogToReproduce(c context.Context, ns string, req *dashapi.LogToReproReq) (interface{}, error) {
+func apiLogToReproduce(c context.Context, ns string, req *dashapi.LogToReproReq) (any, error) {
 	build, err := loadBuild(c, ns, req.BuildID)
 	if err != nil {
 		return nil, err
@@ -1863,7 +1863,7 @@ func takeReproTask(c context.Context, ns, manager string) ([]byte, error) {
 	return log, err
 }
 
-func apiCreateUploadURL(c context.Context, req *any) (interface{}, error) {
+func apiCreateUploadURL(c context.Context, req *any) (any, error) {
 	bucket := getConfig(c).UploadBucket
 	if bucket == "" {
 		return nil, errors.New("not configured")
@@ -1871,7 +1871,7 @@ func apiCreateUploadURL(c context.Context, req *any) (interface{}, error) {
 	return fmt.Sprintf("%s/%s.upload", bucket, uuid.New().String()), nil
 }
 
-func apiSendEmail(c context.Context, req *dashapi.SendEmailReq) (interface{}, error) {
+func apiSendEmail(c context.Context, req *dashapi.SendEmailReq) (any, error) {
 	var headers mail.Header
 	if req.InReplyTo != "" {
 		headers = mail.Header{"In-Reply-To": []string{req.InReplyTo}}
@@ -1889,7 +1889,7 @@ func apiSendEmail(c context.Context, req *dashapi.SendEmailReq) (interface{}, er
 // apiSaveCoverage reads jsonl data from payload and stores it to coveragedb.
 // First payload jsonl line is a coveragedb.HistoryRecord (w/o session and time).
 // Second+ records are coveragedb.JSONLWrapper.
-func apiSaveCoverage(c context.Context, payload io.Reader) (interface{}, error) {
+func apiSaveCoverage(c context.Context, payload io.Reader) (any, error) {
 	descr := new(coveragedb.HistoryRecord)
 	jsonDec := json.NewDecoder(payload)
 	if err := jsonDec.Decode(descr); err != nil {
diff --git a/dashboard/app/coverage.go b/dashboard/app/coverage.go
index 67a4494e0..d10651fef 100644
--- a/dashboard/app/coverage.go
+++ b/dashboard/app/coverage.go
@@ -111,7 +111,7 @@ func getParam[T int | string | bool | civil.Date](r *http.Request, name string,
 	return extractVal(t, r.FormValue(name)).(T)
 }
 
-func extractVal(t interface{}, val string) interface{} {
+func extractVal(t any, val string) any {
 	switch t.(type) {
 	case int:
 		res, _ := strconv.Atoi(val)
diff --git a/dashboard/app/entities_spanner.go b/dashboard/app/entities_spanner.go
index df1bfeed7..cf21e43eb 100644
--- a/dashboard/app/entities_spanner.go
+++ b/dashboard/app/entities_spanner.go
@@ -44,7 +44,7 @@ from merge_history join files
   on merge_history.session = files.session
 where namespace=$1 and duration>=$2 and duration<=$3 and manager='*'
 group by dateto, duration`,
-		Params: map[string]interface{}{
+		Params: map[string]any{
 			"p1": ns,
 			"p2": minDays,
 			"p3": maxDays,
diff --git a/dashboard/app/handler.go b/dashboard/app/handler.go
index 157e33383..bda86eb30 100644
--- a/dashboard/app/handler.go
+++ b/dashboard/app/handler.go
@@ -203,7 +203,7 @@ func handleAuth(fn contextHandler) contextHandler {
 	}
 }
 
-func serveTemplate(w http.ResponseWriter, name string, data interface{}) error {
+func serveTemplate(w http.ResponseWriter, name string, data any) error {
 	buf := new(bytes.Buffer)
 	if err := templates.ExecuteTemplate(buf, name, data); err != nil {
 		return err
diff --git a/dashboard/app/jobs.go b/dashboard/app/jobs.go
index b7ff881a3..9c1a9001e 100644
--- a/dashboard/app/jobs.go
+++ b/dashboard/app/jobs.go
@@ -1258,7 +1258,7 @@ func pollCompletedJobs(c context.Context, typ string) ([]*dashapi.BugReport, err
 	return reports, nil
 }
 
-func createBugReportForJob(c context.Context, job *Job, jobKey *db.Key, config interface{}) (
+func createBugReportForJob(c context.Context, job *Job, jobKey *db.Key, config any) (
 	*dashapi.BugReport, error) {
 	reportingConfig, err := json.Marshal(config)
 	if err != nil {
diff --git a/dashboard/app/label.go b/dashboard/app/label.go
index cbff8c33e..807951f48 100644
--- a/dashboard/app/label.go
+++ b/dashboard/app/label.go
@@ -32,7 +32,7 @@ type subsetOf []string
 type trueFalse struct{}
 
 func makeLabelSet(c context.Context, ns string) *labelSet {
-	ret := map[BugLabelType]interface{}{
+	ret := map[BugLabelType]any{
 		PriorityLabel: oneOf([]string{
 			string(LowPrioBug),
 			string(NormalPrioBug),
@@ -74,7 +74,7 @@ func makeLabelSet(c context.Context, ns string) *labelSet {
 type labelSet struct {
 	c      context.Context
 	ns     string
-	labels map[BugLabelType]interface{}
+	labels map[BugLabelType]any
 }
 
 func (s *labelSet) FindLabel(label BugLabelType) bool {
diff --git a/dashboard/app/main.go b/dashboard/app/main.go
index 0d2e588b1..3b1749a45 100644
--- a/dashboard/app/main.go
+++ b/dashboard/app/main.go
@@ -318,7 +318,7 @@ type uiCollapsible struct {
 	Title string
 	Show  bool   // By default it's collapsed.
 	Type  string // Template system understands it.
-	Value interface{}
+	Value any
 }
 
 func makeCollapsibleBugJobs(title string, jobs []*uiJob) *uiCollapsible {
@@ -1411,7 +1411,7 @@ func handleBugSummaries(c context.Context, w http.ResponseWriter, r *http.Reques
 	return json.NewEncoder(w).Encode(list)
 }
 
-func writeJSONVersionOf(writer http.ResponseWriter, page interface{}) error {
+func writeJSONVersionOf(writer http.ResponseWriter, page any) error {
 	data, err := GetJSONDescrFor(page)
 	if err != nil {
 		return err
diff --git a/dashboard/app/public_json_api.go b/dashboard/app/public_json_api.go
index 5905ec8c6..75c688954 100644
--- a/dashboard/app/public_json_api.go
+++ b/dashboard/app/public_json_api.go
@@ -161,8 +161,8 @@ func getExtAPIDescrForBackports(groups []*uiBackportGroup) *publicAPIBackports {
 	}
 }
 
-func GetJSONDescrFor(page interface{}) ([]byte, error) {
-	var res interface{}
+func GetJSONDescrFor(page any) ([]byte, error) {
+	var res any
 	switch i := page.(type) {
 	case *uiBugPage:
 		res = getExtAPIDescrForBugPage(i)
diff --git a/dashboard/app/reporting_external.go b/dashboard/app/reporting_external.go
index 8dd4eb444..3bfc5f445 100644
--- a/dashboard/app/reporting_external.go
+++ b/dashboard/app/reporting_external.go
@@ -15,7 +15,7 @@ import (
 // The external system is meant to poll for new bugs with apiReportingPoll,
 // and report back bug status updates with apiReportingUpdate.
 
-func apiReportingPollBugs(c context.Context, req *dashapi.PollBugsRequest) (interface{}, error) {
+func apiReportingPollBugs(c context.Context, req *dashapi.PollBugsRequest) (any, error) {
 	if stop, err := emergentlyStopped(c); err != nil || stop {
 		return &dashapi.PollBugsResponse{}, err
 	}
@@ -32,7 +32,7 @@ func apiReportingPollBugs(c context.Context, req *dashapi.PollBugsRequest) (inte
 }
 
 func apiReportingPollNotifications(c context.Context, req *dashapi.PollNotificationsRequest) (
-	interface{}, error) {
+	any, error) {
 	if stop, err := emergentlyStopped(c); err != nil || stop {
 		return &dashapi.PollNotificationsResponse{}, err
 	}
@@ -43,7 +43,7 @@ func apiReportingPollNotifications(c context.Context, req *dashapi.PollNotificat
 	return resp, nil
 }
 
-func apiReportingPollClosed(c context.Context, req *dashapi.PollClosedRequest) (interface{}, error) {
+func apiReportingPollClosed(c context.Context, req *dashapi.PollClosedRequest) (any, error) {
 	if stop, err := emergentlyStopped(c); err != nil || stop {
 		return &dashapi.PollClosedResponse{}, err
 	}
@@ -57,7 +57,7 @@ func apiReportingPollClosed(c context.Context, req *dashapi.PollClosedRequest) (
 	return resp, nil
 }
 
-func apiReportingUpdate(c context.Context, req *dashapi.BugUpdate) (interface{}, error) {
+func apiReportingUpdate(c context.Context, req *dashapi.BugUpdate) (any, error) {
 	if req.JobID != "" {
 		resp := &dashapi.BugUpdateReply{
 			OK:    true,
@@ -78,7 +78,7 @@ func apiReportingUpdate(c context.Context, req *dashapi.BugUpdate) (interface{},
 	}, nil
 }
 
-func apiNewTestJob(c context.Context, req *dashapi.TestPatchRequest) (interface{}, error) {
+func apiNewTestJob(c context.Context, req *dashapi.TestPatchRequest) (any, error) {
 	resp := &dashapi.TestPatchReply{}
 	err := handleExternalTestRequest(c, req)
 	if err != nil {
diff --git a/dashboard/app/subsystem.go b/dashboard/app/subsystem.go
index c49bc081b..48ee1f785 100644
--- a/dashboard/app/subsystem.go
+++ b/dashboard/app/subsystem.go
@@ -108,7 +108,7 @@ type (
 )
 
 func updateBugSubsystems(c context.Context, bugKey *db.Key,
-	list []*subsystem.Subsystem, info interface{}) error {
+	list []*subsystem.Subsystem, info any) error {
 	now := timeNow(c)
 	return updateSingleBug(c, bugKey, func(bug *Bug) error {
 		switch v := info.(type) {
diff --git a/dashboard/app/tree.go b/dashboard/app/tree.go
index a6a9e9e30..b6261e289 100644
--- a/dashboard/app/tree.go
+++ b/dashboard/app/tree.go
@@ -94,7 +94,7 @@ func treeOriginJobDone(cGlobal context.Context, jobKey *db.Key, job *Job) error
 	return runInTransaction(cGlobal, tx, &db.TransactionOptions{XG: true})
 }
 
-type pollTreeJobResult interface{}
+type pollTreeJobResult any
 
 // pollResultPending is returned when we wait some job to finish.
 type pollResultPending struct{}
@@ -371,7 +371,7 @@ func (ctx *bugTreeContext) groupResults(results []pollTreeJobResult) pollTreeJob
 	return pollResultSkip{}
 }
 
-type expectedResult interface{}
+type expectedResult any
 
 // resultFreshness subtypes.
 type wantFirstOK struct{}
@@ -379,7 +379,7 @@ type wantFirstCrash struct{}
 type wantFirstAny struct{}
 type wantNewAny time.Time
 
-type runReproOn interface{}
+type runReproOn any
 
 // runReproOn subtypes.
 type runOnAny struct{} // attempts to find any result, if unsuccessful, runs on HEAD
diff --git a/dashboard/app/util_test.go b/dashboard/app/util_test.go
index 199573cf0..9fd4d3b81 100644
--- a/dashboard/app/util_test.go
+++ b/dashboard/app/util_test.go
@@ -125,14 +125,14 @@ func (c *Ctx) expectBadReqest(err error) {
 	expectFailureStatus(c.t, err, http.StatusBadRequest)
 }
 
-func (c *Ctx) expectEQ(got, want interface{}) {
+func (c *Ctx) expectEQ(got, want any) {
 	if diff := cmp.Diff(got, want); diff != "" {
 		c.t.Helper()
 		c.t.Fatal(diff)
 	}
 }
 
-func (c *Ctx) expectNE(got, want interface{}) {
+func (c *Ctx) expectNE(got, want any) {
 	if reflect.DeepEqual(got, want) {
 		c.t.Helper()
 		c.t.Fatalf("equal: %#v", got)
@@ -504,8 +504,8 @@ type apiClient struct {
 }
 
 func (c *Ctx) makeClient(client, key string, failOnErrors bool) *apiClient {
-	logger := func(msg string, args ...interface{}) {
-		c.t.Logf("%v: "+msg, append([]interface{}{caller(3)}, args...)...)
+	logger := func(msg string, args ...any) {
+		c.t.Logf("%v: "+msg, append([]any{caller(3)}, args...)...)
 	}
 	errorHandler := func(err error) {
 		if failOnErrors {
@@ -628,7 +628,7 @@ type (
 	EmailOptSender    string
 )
 
-func (c *Ctx) incomingEmail(to, body string, opts ...interface{}) {
+func (c *Ctx) incomingEmail(to, body string, opts ...any) {
 	id := 0
 	subject := "crash1"
 	from := "default@sender.com"
diff --git a/dashboard/dashapi/dashapi.go b/dashboard/dashapi/dashapi.go
index 1f9dec94d..84b90eb97 100644
--- a/dashboard/dashapi/dashapi.go
+++ b/dashboard/dashapi/dashapi.go
@@ -54,7 +54,7 @@ func New(client, addr, key string, opts ...DashboardOpts) (*Dashboard, error) {
 type (
 	RequestCtor   func(method, url string, body io.Reader) (*http.Request, error)
 	RequestDoer   func(req *http.Request) (*http.Response, error)
-	RequestLogger func(msg string, args ...interface{})
+	RequestLogger func(msg string, args ...any)
 )
 
 // key == "" indicates that the ambient GCE service account authority
@@ -407,7 +407,7 @@ type LogEntry struct {
 }
 
 // Centralized logging on dashboard.
-func (dash *Dashboard) LogError(name, msg string, args ...interface{}) {
+func (dash *Dashboard) LogError(name, msg string, args ...any) {
 	req := &LogEntry{
 		Name: name,
 		Text: fmt.Sprintf(msg, args...),
@@ -988,7 +988,7 @@ type JobInfo struct {
 	OnMergeBase      bool
 }
 
-func (dash *Dashboard) Query(method string, req, reply interface{}) error {
+func (dash *Dashboard) Query(method string, req, reply any) error {
 	if dash.logger != nil {
 		dash.logger("API(%v): %#v", method, req)
 	}
@@ -1008,7 +1008,7 @@ func (dash *Dashboard) Query(method string, req, reply interface{}) error {
 	return nil
 }
 
-func (dash *Dashboard) queryImpl(method string, req, reply interface{}) error {
+func (dash *Dashboard) queryImpl(method string, req, reply any) error {
 	if reply != nil {
 		// json decoding behavior is somewhat surprising
 		// (see // https://github.com/golang/go/issues/21092).