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+An associated type binding was done outside of the type parameter declaration
+and `where` clause.
+
+Erroneous code example:
+
+```compile_fail,E0229
+pub trait Foo {
+    type A;
+    fn boo(&self) -> <Self as Foo>::A;
+}
+
+struct Bar;
+
+impl Foo for isize {
+    type A = usize;
+    fn boo(&self) -> usize { 42 }
+}
+
+fn baz<I>(x: &<I as Foo<A=Bar>>::A) {}
+// error: associated type bindings are not allowed here
+```
+
+To solve this error, please move the type bindings in the type parameter
+declaration:
+
+```
+# struct Bar;
+# trait Foo { type A; }
+fn baz<I: Foo<A=Bar>>(x: &<I as Foo>::A) {} // ok!
+```
+
+Or in the `where` clause:
+
+```
+# struct Bar;
+# trait Foo { type A; }
+fn baz<I>(x: &<I as Foo>::A) where I: Foo<A=Bar> {}
+```