Attempting a known good appveyor script

appveyor.yml

@@ -11,12 +11,13 @@ environment:
     - TARGET: i686-pc-windows-msvc
       BITS: 32
 install:
-  - curl -sSf -o rustup-init.exe https://win.rustup.rs/
-  - rustup-init.exe -y --default-host %TARGET%
-  - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
-  - if defined MSYS2 set PATH=C:\msys64\mingw%BITS%\bin;%PATH%
-  - rustc -V
-  - cargo -V
+  - cmd: >-
+    curl -sSf -o rustup-init.exe https://win.rustup.rs/ &
+    rustup-init.exe -y --default-host %TARGET% &
+    set PATH=%PATH%;C:\Users\appveyor\.cargo\bin &
+    if defined MSYS2 set PATH=C:\msys64\mingw%BITS%\bin;%PATH% &
+    rustc -V &
+    cargo -V
 build: false
 test_script:
   - cargo build --verbose --all