Properly referencing environment variables in Windows

.gitlab-ci.yml

@@ -146,9 +146,9 @@ build:windows:stable:
     RUST_TOOLCHAIN: stable-x86_64-pc-windows-gnu
   script:
     - rustup update
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo build
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo build
   artifacts:
     expire_in: 4 hours
     paths:
@@ -167,9 +167,9 @@ test:windows:stable:
     RUST_TOOLCHAIN: stable-x86_64-pc-windows-gnu
   script:
     - rustup update
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo test
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo test
   only:
     - master
     - develop
@@ -185,9 +185,9 @@ release:windows:stable:
   variables:
     RUST_TOOLCHAIN: stable-x86_64-pc-windows-gnu  
   script:
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo build --release
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo build --release
   artifacts:
     expire_in: 4 weeks
     paths:
@@ -207,9 +207,9 @@ build:windows:nightly:
     RUST_TOOLCHAIN: nightly-x86_64-pc-windows-gnu
   script:
     - rustup update
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo build
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo build
   artifacts:
     expire_in: 4 hours
     paths:
@@ -227,9 +227,9 @@ test:windows:nightly:
     RUST_TOOLCHAIN: nightly-x86_64-pc-windows-gnu
   script:
     - rustup update
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo test
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo test
   only:
     - develop
   tags:
@@ -244,9 +244,9 @@ release:windows:nightly:
   variables:
     RUST_TOOLCHAIN: nightly-x86_64-pc-windows-gnu  
   script:
-    - rustup run $RUST_TOOLCHAIN rustc -Vv
-    - rustup run $RUST_TOOLCHAIN cargo -Vv
-    - rustup run $RUST_TOOLCHAIN cargo build --release
+    - rustup run %RUST_TOOLCHAIN% rustc -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo -Vv
+    - rustup run %RUST_TOOLCHAIN% cargo build --release
   artifacts:
     expire_in: 1 week
     paths: