Updated appveyor build

appveyor.yml

@@ -17,9 +17,9 @@ install:
   - ps: Start-FileDownload "https://curl.haxx.se/ca/cacert.pem" -FileName "C:\OpenSSL\cacert.pem"
 
   # Install Rust
-  - curl -sSf -o rustup-init.exe https://win.rustup.rs/
+  - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
   - rustup-init.exe -y --default-host %TARGET%
-  - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
+  - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
   - if defined MSYS2 set PATH=C:\msys64\mingw%BITS%\bin;%PATH%
 
   # Run tests
@@ -29,7 +29,7 @@ install:
 build: false
 
 test_script:
-  - cargo test
+  - cargo test -v --no-fail-fast
 
 cache:
   - target