build: Update toolchain to nightly-2021-03-04

retrage · retrage · commit 9eaf4829f96c · 2021-03-05T17:09:29.000+09:00
Signed-off-by: Akira Moroo &lt;retrage01@gmail.com&gt;
diff --git a/rust-toolchain b/rust-toolchain
@@ -1 +1 @@
-nightly-2020-10-01
+nightly-2021-03-04
