diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index b5450d0a20c..5b94f036248 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -32,14 +32,12 @@
 //!
 //! Once you are familiar with the contents of the standard library you may
 //! begin to find the verbosity of the prose distracting. At this stage in your
-//! development you may want to press the <code>
-//! <svg style="width:0.75rem;height:0.75rem" viewBox="0 0 12 12"
-//! stroke="currentColor" fill="none">
-//! <path d="M2,2l4,4l4,-4M2,6l4,4l4,-4"/></svg> Summary</code> button near the
-//! top of the page to collapse it into a more skimmable view.
+//! development you may want to press the
+//! "<svg style="width:0.75rem;height:0.75rem" viewBox="0 0 12 12" stroke="currentColor" fill="none"><path d="M2,2l4,4l4,-4M2,6l4,4l4,-4"/></svg>&nbsp;Summary"
+//! button near the top of the page to collapse it into a more skimmable view.
 //!
 //! While you are looking at the top of the page, also notice the
-//! <code>source</code> link. Rust's API documentation comes with the source
+//! "Source" link. Rust's API documentation comes with the source
 //! code and you are encouraged to read it. The standard library source is
 //! generally high quality and a peek behind the curtains is
 //! often enlightening.
diff --git a/src/librustdoc/scrape_examples.rs b/src/librustdoc/scrape_examples.rs
index a59c43bfbf9..3134d25e544 100644
--- a/src/librustdoc/scrape_examples.rs
+++ b/src/librustdoc/scrape_examples.rs
@@ -9,7 +9,6 @@
 use rustc_hir::{self as hir};
 use rustc_interface::interface;
 use rustc_macros::{Decodable, Encodable};
-use rustc_middle::hir::map::Map;
 use rustc_middle::hir::nested_filter;
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_serialize::opaque::{FileEncoder, MemDecoder};
@@ -107,8 +106,6 @@ pub(crate) struct CallData {
 
 /// Visitor for traversing a crate and finding instances of function calls.
 struct FindCalls<'a, 'tcx> {
-    tcx: TyCtxt<'tcx>,
-    map: Map<'tcx>,
     cx: Context<'tcx>,
     target_crates: Vec<CrateNum>,
     calls: &'a mut AllCallLocations,
@@ -122,13 +119,13 @@ impl<'a, 'tcx> Visitor<'tcx> for FindCalls<'a, 'tcx>
     type NestedFilter = nested_filter::OnlyBodies;
 
     fn nested_visit_map(&mut self) -> Self::Map {
-        self.map
+        self.cx.tcx().hir()
     }
 
     fn visit_expr(&mut self, ex: &'tcx hir::Expr<'tcx>) {
         intravisit::walk_expr(self, ex);
 
-        let tcx = self.tcx;
+        let tcx = self.cx.tcx();
 
         // If we visit an item that contains an expression outside a function body,
         // then we need to exit before calling typeck (which will panic). See
@@ -294,8 +291,7 @@ pub(crate) fn run(
 
         // Run call-finder on all items
         let mut calls = FxIndexMap::default();
-        let mut finder =
-            FindCalls { calls: &mut calls, tcx, map: tcx.hir(), cx, target_crates, bin_crate };
+        let mut finder = FindCalls { calls: &mut calls, cx, target_crates, bin_crate };
         tcx.hir().visit_all_item_likes_in_crate(&mut finder);
 
         // The visitor might have found a type error, which we need to
diff --git a/tests/crashes/README.md b/tests/crashes/README.md
index 71ce9b2eca6..2dc81a115df 100644
--- a/tests/crashes/README.md
+++ b/tests/crashes/README.md
@@ -8,7 +8,7 @@ A test will "pass" if rustc exits with something other than 1 or 0.
 
 When adding crashes from https://github.com/rust-lang/rust/issues, the
 issue number should be noted in the file name (12345.rs should suffice)
-and perhaps also inside the file via `//@ known-bug #4321`
+and also inside the file via `//@ known-bug #4321` if possible.
 
 If you happen to fix one of the crashes, please move it to a fitting
 subdirectory in `tests/ui` and give it a meaningful name.
@@ -21,3 +21,5 @@ to the description of your pull request will ensure the
 corresponding tickets will be closed automatically upon merge.
 The ticket ids can be found in the file name or the `known-bug` annotation
 inside the testfile.
+
+Please do not re-report any crashes that you find here!