diff --git a/clippy_lints/src/assertions_on_constants.rs b/clippy_lints/src/assertions_on_constants.rs
index e2651206e80..9e2a8c451ee 100644
--- a/clippy_lints/src/assertions_on_constants.rs
+++ b/clippy_lints/src/assertions_on_constants.rs
@@ -16,7 +16,7 @@ declare_clippy_lint! {
     /// **Known problems:** None
     ///
     /// **Example:**
-    /// ```rust
+    /// ```rust,ignore
     /// assert!(false)
     /// // or
     /// assert!(true)
diff --git a/clippy_lints/src/assign_ops.rs b/clippy_lints/src/assign_ops.rs
index b71a5cf87c9..a39685f85ff 100644
--- a/clippy_lints/src/assign_ops.rs
+++ b/clippy_lints/src/assign_ops.rs
@@ -22,7 +22,8 @@ declare_clippy_lint! {
     /// **Example:**
     /// ```rust
     /// let mut a = 5;
-    /// ...
+    /// let b = 0;
+    /// // ...
     /// a = a + b;
     /// ```
     pub ASSIGN_OP_PATTERN,
diff --git a/clippy_lints/src/erasing_op.rs b/clippy_lints/src/erasing_op.rs
index bd53e622217..07909ef587f 100644
--- a/clippy_lints/src/erasing_op.rs
+++ b/clippy_lints/src/erasing_op.rs
@@ -17,9 +17,10 @@ declare_clippy_lint! {
     ///
     /// **Example:**
     /// ```rust
+    /// let x = 1;
     /// 0 / x;
     /// 0 * x;
-    /// x & 0
+    /// x & 0;
     /// ```
     pub ERASING_OP,
     correctness,
diff --git a/clippy_lints/src/eta_reduction.rs b/clippy_lints/src/eta_reduction.rs
index 81c359f25ae..1329e945b37 100644
--- a/clippy_lints/src/eta_reduction.rs
+++ b/clippy_lints/src/eta_reduction.rs
@@ -23,7 +23,7 @@ declare_clippy_lint! {
     /// See rust-lang/rust-clippy#1439 for more details.
     ///
     /// **Example:**
-    /// ```rust
+    /// ```rust,ignore
     /// xs.map(|x| foo(x))
     /// ```
     /// where `foo(_)` is a plain function that takes the exact argument type of
diff --git a/clippy_lints/src/misc.rs b/clippy_lints/src/misc.rs
index fabcf5d8e82..77aee50c6f8 100644
--- a/clippy_lints/src/misc.rs
+++ b/clippy_lints/src/misc.rs
@@ -37,7 +37,7 @@ declare_clippy_lint! {
     /// **Example:**
     /// ```rust
     /// fn foo(ref x: u8) -> bool {
-    ///     ..
+    ///     true
     /// }
     /// ```
     pub TOPLEVEL_REF_ARG,
diff --git a/clippy_lints/src/types.rs b/clippy_lints/src/types.rs
index 889f6023c38..5ad999f7095 100644
--- a/clippy_lints/src/types.rs
+++ b/clippy_lints/src/types.rs
@@ -40,7 +40,7 @@ declare_clippy_lint! {
     /// **Known problems:** None.
     ///
     /// **Example:**
-    /// ```rust
+    /// ```rust,ignore
     /// struct X {
     ///     values: Box<Vec<Foo>>,
     /// }
@@ -48,7 +48,7 @@ declare_clippy_lint! {
     ///
     /// Better:
     ///
-    /// ```rust
+    /// ```rust,ignore
     /// struct X {
     ///     values: Vec<Foo>,
     /// }
@@ -101,6 +101,7 @@ declare_clippy_lint! {
     /// fn x() -> Option<Option<u32>> {
     ///     None
     /// }
+    /// ```
     pub OPTION_OPTION,
     complexity,
     "usage of `Option<Option<T>>`"
@@ -150,13 +151,13 @@ declare_clippy_lint! {
     /// **Known problems:** None.
     ///
     /// **Example:**
-    /// ```rust
+    /// ```rust,ignore
     /// fn foo(bar: &Box<T>) { ... }
     /// ```
     ///
     /// Better:
     ///
-    /// ```rust
+    /// ```rust,ignore
     /// fn foo(bar: &T) { ... }
     /// ```
     pub BORROWED_BOX,
@@ -1537,7 +1538,7 @@ declare_clippy_lint! {
     /// like `#[cfg(target_pointer_width = "64")] ..` instead.
     ///
     /// **Example:**
-    /// ```rust
+    /// ```rust,ignore
     /// vec.len() <= 0
     /// 100 > std::i32::MAX
     /// ```