Reconfigure CI

.gitlab-ci.yml

+image: "rust:latest"
+
+stages:
+  - build
+  - test
+
 before_script:
-  - apt-get update -qq
-  - apt-get install -qq build-essential curl git
-  - curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain stable
-  - source "$HOME/.cargo/env"
+    - rustup toolchain add $toolchain
+
+cache:
+  paths:
+    - target/
 
-stable:
+build:stable:
+  stage: build
+  variables:
+    toolchain: stable
   script:
     - cargo +stable build --verbose
+    - cargo +stable build --release --verbose
+
+test:stable:
+  stage: test
+  variables:
+    toolchain: stable
+  dependencies:
+    - build:stable
+  script:
     - script -q -c "cargo +stable test --verbose"
     - script -q -c "cargo +stable test --release --verbose"
 
-beta:
+build:beta:
+  stage: build
+  variables:
+    toolchain: beta
   script:
-    - rustup toolchain add beta
     - cargo +beta build --verbose
+    - cargo +beta build --release --verbose
+
+test:beta:
+  stage: test
+  variables:
+    toolchain: beta
+  dependencies:
+    - build:beta
+  script:
     - script -q -c "cargo +beta test --verbose"
     - script -q -c "cargo +beta test --release --verbose"
 
-nightly:
+build:nightly:
+  stage: build
+  variables:
+    toolchain: nightly
+  script:
+    - cargo +nightly build --verbose
+    - cargo +nightly build --release --verbose
+
+test:nightly:
+  stage: test
+  variables:
+    toolchain: nightly
+  dependencies:
+    - build:nightly
   script:
-  - rustup toolchain add nightly
-  - cargo +nightly build --verbose
-  - script -q -c "cargo +nightly test --verbose"
+    - script -q -c "cargo +nightly test --verbose"
+    - script -q -c "cargo +nightly test --release --verbose"
\ No newline at end of file
-  - script -q -c "cargo +nightly test --release --verbose"