error[E0463]: can't find crate for `std` | |
| | |
= note: the `thumbv6m-none-eabi` target may not be installed | |
= 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 1 previous error | |
For more information about this error, try `rustc --explain E0463`. |