From 07d5e3e7bc113067b3480c67cc1cf466b62c142a Mon Sep 17 00:00:00 2001
From: Ruslan Sayfutdinov <sayfutdinov@fb.com>
Date: Thu, 8 Sep 2022 10:31:57 -0700
Subject: [PATCH] update rust toolchain

Summary:
It includes this fix which was backported to 1.62.1.
https://github.com/rust-lang/rust/pull/98950

`2022-08-06` is what will become 1.64.0.

Changes are caused by:
- Split TypeVisitable from TypeFoldable: https://github.com/rust-lang/rust/pull/98206
- Remove `fn backtrace` and replace with usages of provider API: https://github.com/rust-lang/rust/pull/99431

Reviewed By: stepancheg

Differential Revision: D39277984

fbshipit-source-id: 5afc6c2b9e5ee3074ea0ede995868aef12cebf14
---
 buck2_common/src/result.rs | 4 ----
 rust-toolchain             | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/buck2_common/src/result.rs b/buck2_common/src/result.rs
index e18d49c27ad5..106c5d46a363 100644
--- a/buck2_common/src/result.rs
+++ b/buck2_common/src/result.rs
@@ -68,10 +68,6 @@ impl std::error::Error for SharedError {
         self.0.source()
     }
 
-    fn backtrace(&self) -> Option<&std::backtrace::Backtrace> {
-        Some(self.0.backtrace())
-    }
-
     fn cause(&self) -> Option<&dyn std::error::Error> {
         #[allow(deprecated)]
         self.0.cause()
diff --git a/rust-toolchain b/rust-toolchain
index 58286cc60688..8863be80c196 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2022-06-25"
+channel = "nightly-2022-08-06"
 components = ["llvm-tools-preview","rustc-dev"]