From 5ced0445c0c91ee1d1288b16aa3a281a6b9dde08 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 28 Mar 2021 21:45:16 -0400
Subject: [PATCH] Report no precedence for `:` binary operator in non-full mode

---
 src/expr.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/expr.rs b/src/expr.rs
index dfa59695c0..32c60cb8ec 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -1422,7 +1422,9 @@ pub(crate) mod parsing {
             Precedence::Assign
         } else if input.peek(Token![..]) {
             Precedence::Range
-        } else if input.peek(Token![as]) || input.peek(Token![:]) && !input.peek(Token![::]) {
+        } else if input.peek(Token![as])
+            || cfg!(feature = "full") && input.peek(Token![:]) && !input.peek(Token![::])
+        {
             Precedence::Cast
         } else {
             Precedence::Any