Update CI to use 1.72

Author: Amanieu

.github/workflows/rust.yml

@@ -58,7 +58,7 @@ jobs:
           thumbv6m-none-eabi,
           x86_64-pc-windows-gnu,
         ]
-        channel: [1.63.0, nightly]
+        channel: [1.72.0, nightly]
         include:
         - os: macos-latest
           target: x86_64-apple-darwin
@@ -68,10 +68,10 @@ jobs:
           channel: nightly
         - os: macos-latest
           target: x86_64-apple-darwin
-          channel: 1.63.0
+          channel: 1.72.0
         - os: windows-latest
           target: x86_64-pc-windows-msvc
-          channel: 1.63.0
+          channel: 1.72.0
         - os: ubuntu-latest
           target: x86_64-unknown-linux-gnu
           channel: beta

ci/run.sh

@@ -16,9 +16,6 @@ if [ "${CHANNEL}" = "nightly" ]; then
     FEATURES="${FEATURES},nightly"
     export RUSTFLAGS="$RUSTFLAGS -D warnings"
 fi
-if [ "${CHANNEL}" = "1.63.0" ]; then
-    cargo update --package allocator-api2 --precise 0.2.9
-fi
 
 CARGO=cargo
 if [ "${CROSS}" = "1" ]; then