Functions of core::fmt do not work

[Woyten]

Formatting functions (probably all) like Debug::debug or the format! macro do not work in libtock-rs. They crash the program without any noticeable panics.

I can only guess but the problem might have the same cause as avr-rust/rust-legacy-fork/issues/37.

[alevy]

The reason is (almost certainly) because they compile to using vtables, which are going to require some relocation to work, unfortunately...