use rustc_session::config::{CrateType, EntryFnType};
use rustc_session::parse::feature_err;
use rustc_session::Session;
use rustc_span::symbol::sym;
use rustc_span::{Span, DUMMY_SP};
use rustc_session::config::{CrateType, EntryFnType};
use rustc_session::parse::feature_err;
use rustc_session::Session;
use rustc_span::symbol::sym;
use rustc_span::{Span, DUMMY_SP};