Bug 1680172 - Fix Android Btime failure. r=glandium CLOSED TREE

taskcluster/ci/toolchain/rust.yml

@@ -147,13 +147,13 @@ linux64-rust-macos-beta:
             '--target', 'aarch64-apple-darwin',
         ]
 
-linux64-rust-android-1.48:
+linux64-rust-android-1.47:
     description: "rust repack with android-cross support"
     treeherder:
         symbol: TL(rust-android)
     run:
         arguments: [
-            '--channel', '1.48.0',
+            '--channel', '1.47.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'armv7-linux-androideabi',