Adapt to rust-lang/rust#0ed9c64c3e

Author: Xanewok

rls-rustc/src/lib.rs

@@ -91,7 +91,7 @@ struct ShimCalls {
 
 impl Callbacks for ShimCalls {
     fn config(&mut self, config: &mut interface::Config) {
-        config.opts.debugging_opts.save_analysis = true;
+        config.opts.unstable_opts.save_analysis = true;
 
         #[cfg(feature = "clippy")]
         match self.clippy_preference {

rls/src/build/rustc.rs

@@ -220,7 +220,7 @@ impl rustc_driver::Callbacks for RlsRustcCalls {
         // This also prevents the compiler from dropping expanded AST, which we
         // still need in the `after_analysis` callback in order to process and
         // pass the computed analysis in-memory.
-        config.opts.debugging_opts.save_analysis = true;
+        config.opts.unstable_opts.save_analysis = true;
 
         #[cfg(feature = "clippy")]
         {