use rustc::session::config::{self, Input, OutputFilenames, OutputType};
use rustc::session::Session;
+use rustc_span::symbol::sym;
+use rustc_span::Span;
use std::path::{Path, PathBuf};
-use syntax::symbol::sym;
use syntax::{ast, attr};
-use syntax_pos::Span;
pub fn out_filename(
sess: &Session,