I'm not sure in what world writing C++11 is "very straight forward ... safe and clean". You can easily write unsafe code without thinking about it. For example one can write a function that lends out a reference or pointer to memory that may or may not exist after the call exits, and this is impossible in Rust.
To be precise, impossible outside defined `unsafe` blocks of code. It's still important to be able to drop down once and a while if you absolutely need to... you just don't want that ability all the time.
