Upgrade to Go 1.22.1

Closes #12250

tpl/internal/go_templates/testenv/exec.go

@@ -6,6 +6,7 @@ package testenv
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -60,6 +61,13 @@ func tryExec() error {
 	// may as well use the same path so that this branch can be tested without
 	// an ios environment.
 
+	if !testing.Testing() {
+		// This isn't a standard 'go test' binary, so we don't know how to
+		// self-exec in a way that should succeed without side effects.
+		// Just forget it.
+		return errors.New("can't probe for exec support with a non-test executable")
+	}
+
 	// We know that this is a test executable. We should be able to run it with a
 	// no-op flag to check for overall exec support.
 	exe, err := os.Executable()

tpl/internal/go_templates/testenv/testenv_notunix.go

@@ -17,5 +17,5 @@ import (
 var Sigquit = os.Kill
 
 func syscallIsNotSupported(err error) bool {
-	return errors.Is(err, fs.ErrPermission)
+	return errors.Is(err, fs.ErrPermission) || errors.Is(err, errors.ErrUnsupported)
 }

tpl/internal/go_templates/testenv/testenv_test.go

@@ -54,8 +54,8 @@ func TestGoToolLocation(t *testing.T) {
 	}
 }
 
+// Modified by Hugo.
 func TestHasGoBuild(t *testing.T) {
-	// Removed by Hugo.
 }
 
 func TestMustHaveExec(t *testing.T) {
@@ -73,7 +73,7 @@ func TestMustHaveExec(t *testing.T) {
 			t.Errorf("expected MustHaveExec to skip on %v", runtime.GOOS)
 		}
 	case "ios":
-		if b := testenv.Builder(); strings.HasSuffix(b, "-corellium") && !hasExec {
+		if b := testenv.Builder(); isCorelliumBuilder(b) && !hasExec {
 			// Most ios environments can't exec, but the corellium builder can.
 			t.Errorf("expected MustHaveExec not to skip on %v", b)
 		}
@@ -106,3 +106,23 @@ func TestCleanCmdEnvPWD(t *testing.T) {
 	}
 	t.Error("PWD not set in cmd.Env")
 }
+
+func isCorelliumBuilder(builderName string) bool {
+	// Support both the old infra's builder names and the LUCI builder names.
+	// The former's names are ad-hoc so we could maintain this invariant on
+	// the builder side. The latter's names are structured, and "corellium" will
+	// appear as a "host" suffix after the GOOS and GOARCH, which always begin
+	// with an underscore.
+	return strings.HasSuffix(builderName, "-corellium") || strings.Contains(builderName, "_corellium")
+}
+
+func isEmulatedBuilder(builderName string) bool {
+	// Support both the old infra's builder names and the LUCI builder names.
+	// The former's names are ad-hoc so we could maintain this invariant on
+	// the builder side. The latter's names are structured, and the signifier
+	// of emulation "emu" will appear as a "host" suffix after the GOOS and
+	// GOARCH because it modifies the run environment in such a way that it
+	// the target GOOS and GOARCH may not match the host. This suffix always
+	// begins with an underscore.
+	return strings.HasSuffix(builderName, "-emu") || strings.Contains(builderName, "_emu")
+}

tpl/internal/go_templates/testenv/testenv_unix.go

@@ -35,7 +35,7 @@ func syscallIsNotSupported(err error) bool {
 		}
 	}
 
-	if errors.Is(err, fs.ErrPermission) {
+	if errors.Is(err, fs.ErrPermission) || errors.Is(err, errors.ErrUnsupported) {
 		return true
 	}