Fix breakage due to rust-lang/rust#62705

Also rename `OUTER_EXPN_INFO` to `OUTER_EXPN_EXPN_INFO` to match new
function names.

Author: Michael Wright

clippy_lints/src/lib.rs

@@ -668,7 +668,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
         utils::internal_lints::COMPILER_LINT_FUNCTIONS,
         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
-        utils::internal_lints::OUTER_EXPN_INFO,
+        utils::internal_lints::OUTER_EXPN_EXPN_INFO,
     ]);
 
     reg.register_lint_group("clippy::all", Some("clippy"), vec![

clippy_lints/src/utils/internal_lints.rs

@@ -93,9 +93,9 @@ declare_clippy_lint! {
     /// ```rust
     /// expr.span.ctxt().outer_expn_info()
     /// ```
-    pub OUTER_EXPN_INFO,
+    pub OUTER_EXPN_EXPN_INFO,
     internal,
-    "using `cx.outer().expn_info()` instead of `cx.outer_expn_info()`"
+    "using `cx.outer_expn().expn_info()` instead of `cx.outer_expn_info()`"
 }
 
 declare_lint_pass!(ClippyLintsInternal => [CLIPPY_LINTS_INTERNAL]);
@@ -280,15 +280,15 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for CompilerLintFunctions {
 
 pub struct OuterExpnInfoPass;
 
-impl_lint_pass!(OuterExpnInfoPass => [OUTER_EXPN_INFO]);
+impl_lint_pass!(OuterExpnInfoPass => [OUTER_EXPN_EXPN_INFO]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for OuterExpnInfoPass {
     fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx hir::Expr) {
         let (method_names, arg_lists) = method_calls(expr, 2);
         let method_names: Vec<LocalInternedString> = method_names.iter().map(|s| s.as_str()).collect();
         let method_names: Vec<&str> = method_names.iter().map(std::convert::AsRef::as_ref).collect();
         if_chain! {
-            if let ["expn_info", "outer"] = method_names.as_slice();
+            if let ["expn_info", "outer_expn"] = method_names.as_slice();
             let args = arg_lists[1];
             if args.len() == 1;
             let self_arg = &args[0];
@@ -297,9 +297,9 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for OuterExpnInfoPass {
             then {
                 span_lint_and_sugg(
                     cx,
-                    OUTER_EXPN_INFO,
+                    OUTER_EXPN_EXPN_INFO,
                     expr.span.trim_start(self_arg.span).unwrap_or(expr.span),
-                    "usage of `outer().expn_info()`",
+                    "usage of `outer_expn().expn_info()`",
                     "try",
                     ".outer_expn_info()".to_string(),
                     Applicability::MachineApplicable,

tests/ui/outer_expn_info.rs

@@ -16,7 +16,7 @@ declare_lint_pass!(Pass => [TEST_LINT]);
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
     fn check_expr(&mut self, _cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
-        let _ = expr.span.ctxt().outer().expn_info();
+        let _ = expr.span.ctxt().outer_expn().expn_info();
     }
 }
 

tests/ui/outer_expn_info.stderr

@@ -1,15 +1,15 @@
-error: usage of `outer().expn_info()`
+error: usage of `outer_expn().expn_info()`
   --> $DIR/outer_expn_info.rs:19:33
    |
-LL |         let _ = expr.span.ctxt().outer().expn_info();
-   |                                 ^^^^^^^^^^^^^^^^^^^^ help: try: `.outer_expn_info()`
+LL |         let _ = expr.span.ctxt().outer_expn().expn_info();
+   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.outer_expn_info()`
    |
 note: lint level defined here
   --> $DIR/outer_expn_info.rs:1:9
    |
 LL | #![deny(clippy::internal)]
    |         ^^^^^^^^^^^^^^^^
-   = note: `#[deny(clippy::outer_expn_info)]` implied by `#[deny(clippy::internal)]`
+   = note: `#[deny(clippy::outer_expn_expn_info)]` implied by `#[deny(clippy::internal)]`
 
 error: aborting due to previous error