= help: consider downloading the target with `rustup target add thumbv6m-none-eabi`
= help: consider building the standard library from source with `cargo build -Zbuild-std`
-error: aborting due to previous error
+error: requires `sized` lang_item
+
+error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0463`.