separate build and test ci tasks for real this time

.drone.yml

@@ -8,8 +8,12 @@ platform:
     arch: amd64
 
 steps:
-- name: cargo test
+- name: get rust
   commands:
   - rustup default nightly
+- name: cargo build
+  commands:
   - cargo build 
+- name: cargo test
+  commands:
   - cargo test