Use Cargo workspace and pass target specification to WiX

Author: Boddlnagg

Cargo.lock

@@ -62,6 +62,9 @@ kernel32-sys = "0.2.1"
 rustup-mock = { path = "src/rustup-mock", version = "0.5.0" }
 lazy_static = "0.1.15"
 
+[workspace]
+members = ["src/ca-loader", "src/download", "src/rustup-dist", "src/rustup-mock", "src/rustup-utils", "src/rustup-win-installer"]
+
 [lib]
 name = "rustup"
 path = "src/rustup/lib.rs"

Cargo.toml

@@ -56,10 +56,11 @@ test_script:
   - ps: |
       if($env:BUILD_MSI) {
         cd src\rustup-win-installer
-        cargo build --release
+        cargo build --release --target %TARGET%
         cd msi
-        .\build.ps1
+        .\build.ps1 -Target %TARGET%
         cd ..\..\..
+        if($LastExitCode -ne 0) { $host.SetShouldExit($LastExitCode) }
       }
 
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