Add extern crate rustc_driver

This fixes the build on nightly.

.github/workflows/rust.yml

@@ -57,7 +57,7 @@ jobs:
       run: rustup component add rustc-dev
 
     - name: Run tests
-      run: cargo +nightly build --features rustc
+      run: cargo +nightly test --features rustc
 
     - name: Run test-project tests with `rustc` feature
       run: cd test-project && cargo +nightly test --features rustc

README.md

@@ -14,7 +14,7 @@ To use `compiletest-rs` in your application, add the following to `Cargo.toml`
 
 ```toml
 [dev-dependencies]
-compiletest_rs = "0.9"
+compiletest_rs = "0.10.0"
 ```
 
 By default, `compiletest-rs` should be able to run on both stable, beta and
@@ -28,7 +28,7 @@ crate.
 
 ```toml
 [dev-dependencies]
-compiletest_rs = { version = "0.9", features = [ "rustc" ] }
+compiletest_rs = { version = "0.10.0", features = [ "rustc" ] }
 ```
 
 Create a `tests` folder in the root folder of your project. Create a test file

src/common.rs

@@ -14,8 +14,6 @@ use std::fmt;
 use std::fs::{read_dir, remove_file};
 use std::str::FromStr;
 use std::path::PathBuf;
-#[cfg(feature = "rustc")]
-use rustc_session;
 
 use test::ColorConfig;
 use runtest::dylib_env_var;

src/lib.rs

@@ -13,6 +13,8 @@
 #![cfg_attr(feature = "rustc", feature(test))]
 #![deny(unused_imports)]
 
+#[cfg(feature = "rustc")]
+extern crate rustc_driver;
 #[cfg(feature = "rustc")]
 extern crate rustc_session;
 

test-project/tests/pretty/macro.pp

@@ -4,9 +4,9 @@
 use ::std::prelude::rust_2015::*;
 #[macro_use]
 extern crate std;
-// pretty-compare-only
-// pretty-mode:expanded
-// pp-exact:macro.pp
+//@pretty-compare-only
+//@pretty-mode:expanded
+//@pp-exact:macro.pp
 
 macro_rules! square { ($x : expr) => { $x * $x } ; }