Basic Rust env

Former-commit-id: 563aa620deb71fce91de02c91595044da108ff90

.gitlab-ci.yml

@@ -10,9 +10,12 @@ stages:
 
 rust-nightly:
   stage: build
-  image: rustlang/rust:nightly
+  image: ubuntu:latest
   script:
-    - cargo build --verbose
+    - apt-get update
+    - curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly
+    - source /root/.cargo/bin:$PATH
+    - cargo build
     - cargo test --verbose
   allow_failure: false