Ignore doctests in bootstrap
Ignore doctests in bootstrap

On bootstrap the IntoIterator trait is not implemented
yet for arrays.

graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust