}
		}
		smap := makeSubstMap(tparams, targs)
		// TODO(gri): pass a poser here, rather than arg.Pos().
		inferred := check.subst(arg.Pos(), tpar, smap, nil, check.context())
		// CannotInferTypeArgs indicates a failure of inference, though the actual
		// error may be better attributed to a user-provided type argument (hence
		// InvalidTypeArg). We can't differentiate these cases, so fall back on
		// the more general CannotInferTypeArgs.

// implementation will always generate fresh random numbers, large parts of the
// reference connection will always change.

var (
	update       = flag.Bool("update", false, "update golden files on failure")
	fast         = flag.Bool("fast", false, "impose a quick, possibly flaky timeout on recorded tests")
	keyFile      = flag.String("keylog", "", "destination file for KeyLogWriter")

	t.Helper()
	if nerr, ok := err.(net.Error); ok {
		if !nerr.Timeout() {
			if runtime.GOOS == "windows" && runtime.GOARCH == "arm64" && t.Name() == "TestTestConn/TCP/RacyRead" {
				t.Logf("ignoring known failure mode on windows/arm64; see https://go.dev/issue/52893")
			} else {
				t.Errorf("got error: %v, want err.Timeout() = true", nerr)
			}
		}
	} else {
		t.Errorf("got %T: %v, want net.Error", err, err)
	}
}

	if err != nil {
		t.Fatal(err)
	}
	if bytes.Contains(out, []byte("The following helper DLL cannot be loaded")) {
		t.Skipf("powershell failure:\n%s", err)
	}
	if !bytes.Contains(out, []byte("The following commands are available:")) {
		t.Skipf("powershell does not speak English:\n%s", out)
	}
}

func netshInterfaceIPShowInterface(ipver string, ifaces map[string]bool) error {

messages and errors to standard error.

The -json flag causes download to print a sequence of JSON objects
to standard output, describing each downloaded module (or failure),
corresponding to this Go struct:

    type Module struct {
        Path     string // module path
        Query    string // version query corresponding to this version
        Version  string // module version

	// stack space. If the compiler marks them as NOSPLIT this seems
	// as though it could lead to situations where the linker's
	// nosplit-overflow analysis would trigger a link failure. On the
	// other hand if they not tagged NOSPLIT then this could cause
	// problems when building the runtime (since there may be calls to
	// asm routine in cases where it's not safe to grow the stack). In

		}
		// For stdout/stderr, we should have crashed with a broken pipe error.
		// The caller will be looking for that exit status,
		// so just exit normally here to cause a failure in the caller.
		// For descriptor 3, a normal exit is expected.
		os.Exit(0)
	}

	testenv.MustHaveExec(t)
	// This test cannot be run in parallel due to the same race as for TestEPIPE.

details are printed before `throw` using `print` or `println` and the
messages are prefixed with "runtime:".

For unrecoverable errors where user code is expected to be at fault for the
failure (such as racing map writes), use `fatal`.

For runtime error debugging, it may be useful to run with `GOTRACEBACK=system`
or `GOTRACEBACK=crash`. The output of `panic` and `fatal` is as described by

	globalSkip(t)
	goCmd(t, "build", "-buildmode=plugin", "-o", "life.so", "./issue25756/plugin")
	goCmd(t, "build", "-o", "issue25756.exe", "./issue25756/main.go")
	// Fails intermittently, but 20 runs should cause the failure
	for n := 20; n > 0; n-- {
		t.Run(fmt.Sprint(n), func(t *testing.T) {
			t.Parallel()
			run(t, "./issue25756.exe")
		})
	}
}

// Test with main using -buildmode=pie with plugin for issue #43228

		x.mode = mapindex
		x.typ = typ.elem
		x.expr = e
		return false

	case *Interface:
		if !isTypeParam(x.typ) {
			break
		}
		// TODO(gri) report detailed failure cause for better error messages
		var key, elem Type // key != nil: we must have all maps
		mode := variable   // non-maps result mode
		// TODO(gri) factor out closure and use it for non-typeparam cases as well