From f3fa53b8497f18f80d46f90057993b190e57dce8 Mon Sep 17 00:00:00 2001
From: Kunal Mohan <kunalmohan99@gmail.com>
Date: Thu, 21 May 2020 21:51:49 +0530
Subject: [PATCH] update rust toolchain

---
 components/canvas/canvas_data.rs         | 2 +-
 components/script/dom/response.rs        | 2 +-
 components/style/values/generics/calc.rs | 4 ++--
 rust-toolchain                           | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/components/canvas/canvas_data.rs b/components/canvas/canvas_data.rs
index 4a7959788fba..9c3aae1d0beb 100644
--- a/components/canvas/canvas_data.rs
+++ b/components/canvas/canvas_data.rs
@@ -455,7 +455,7 @@ impl<'a> CanvasData<'a> {
 
     pub fn restore_context_state(&mut self) {
         if let Some(state) = self.saved_states.pop() {
-            mem::replace(&mut self.state, state);
+            let _ = mem::replace(&mut self.state, state);
             self.drawtarget.set_transform(&self.state.transform);
             self.drawtarget.pop_clip();
         }
diff --git a/components/script/dom/response.rs b/components/script/dom/response.rs
index d04cde07755f..63c08b3eac8e 100644
--- a/components/script/dom/response.rs
+++ b/components/script/dom/response.rs
@@ -239,7 +239,7 @@ impl BodyOperations for Response {
         match body {
             NetTraitsResponseBody::Done(bytes) => Some(bytes),
             body => {
-                mem::replace(&mut *self.body.borrow_mut(), body);
+                let _ = mem::replace(&mut *self.body.borrow_mut(), body);
                 None
             },
         }
diff --git a/components/style/values/generics/calc.rs b/components/style/values/generics/calc.rs
index 074dd97f4d0b..dd77fd285527 100644
--- a/components/style/values/generics/calc.rs
+++ b/components/style/values/generics/calc.rs
@@ -337,7 +337,7 @@ impl<L: CalcNodeLeaf> CalcNode<L> {
             ($slot:expr) => {{
                 let dummy = Self::MinMax(Default::default(), MinMaxOp::Max);
                 let result = mem::replace($slot, dummy);
-                mem::replace(self, result);
+                let _ = mem::replace(self, result);
             }};
         }
         match *self {
@@ -464,7 +464,7 @@ impl<L: CalcNodeLeaf> CalcNode<L> {
                     replace_self_with!(&mut children[0]);
                 } else {
                     // Else put our simplified children back.
-                    mem::replace(children_slot, children.into_boxed_slice().into());
+                    let _ = mem::replace(children_slot, children.into_boxed_slice().into());
                 }
             },
             Self::Leaf(ref mut l) => {
diff --git a/rust-toolchain b/rust-toolchain
index 0bddeb45c82d..8737a7eb567a 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2020-04-08
+nightly-2020-05-15