import std.stdio: writeln;
import std.conv: text;
import std.typecons: scoped;
class Foo {
    int x;
    this(int x_) { this.x = x_; }
    override string toString() { return text(x); }
}
void main() {
    auto f = scoped!Foo(100);
    writeln(f.x); // OK
    writeln(f); // Error
    typeof(scoped!Foo(1))[10] foos;
    foreach (i, ref fi; foos)
        fi.x = i * 10;
    writeln(foos); // Error
}



dmd 2.062beta gives:


...\dmd2\src\phobos\std\stdio.d(709): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(414): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(437): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(451): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(463): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(475): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(489): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(498): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\stdio.d(714): Error: template instance std.format.formattedWrite!(LockingTextWriter, char, Scoped!(Foo)) error instantiating
...\dmd2\src\phobos\std\stdio.d(1620):        instantiated from here: write!(Scoped!(Foo),char)
temp.d(12):        instantiated from here: writeln!(Scoped!(Foo))
...\dmd2\src\phobos\std\stdio.d(714): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\stdio.d(1620): Error: template instance std.stdio.File.write!(Scoped!(Foo),char) error instantiating
temp.d(12):        instantiated from here: writeln!(Scoped!(Foo))
...\dmd2\src\phobos\std\stdio.d(1620): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
temp.d(12): Error: template instance std.stdio.writeln!(Scoped!(Foo)) error instantiating
temp.d(12): Error: struct std.typecons.scoped!(Foo, int).scoped.Scoped!(Foo).Scoped is not copyable because it is annotated with @disable
...\dmd2\src\phobos\std\format.d(1821): Error: static assert  (isInputRange!(Scoped!(Foo)[])) is false
...\dmd2\src\phobos\std\format.d(1789):        instantiated from here: formatValue!(LockingTextWriter, Scoped!(Foo)[], char)
...\dmd2\src\phobos\std\format.d(2953):        instantiated from here: formatValue!(LockingTextWriter, Scoped!(Foo)[10u], char)
...\dmd2\src\phobos\std\format.d(416):        instantiated from here: formatGeneric!(LockingTextWriter, Scoped!(Foo)[10u], char)
...\dmd2\src\phobos\std\stdio.d(735):        ... (1 instantiations, -v to show) ...
...\dmd2\src\phobos\std\stdio.d(1620):        instantiated from here: write!(Scoped!(Foo)[10u],char)
temp.d(16):        instantiated from here: writeln!(Scoped!(Foo)[10u])