1 error[E0152]: found duplicate lang item `owned_box`
7 = note: the lang item is first defined in crate `alloc` (which `std` depends on)
8 = note: first definition in `alloc` loaded from SYSROOT/liballoc-*.rlib
9 = note: second definition in the local crate (`E0152`)
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0152`.