fix the installation of Rust in the CI

!39 (merged) and !40 (merged) changed the CI to use a toolchain file.

however, having default as the $.profile causes extra useless components to be installed.

this MR sets the $.profile to minimal in the toolchain file and the $.components to rustfmt and clippy.

.gitlab-ci.yml

@@ -21,7 +21,7 @@ fmt:
   stage: fmt
 
   script:
-    - cargo fmt --all -- --check
+    - make fmt
 
 test:
   stage: test
@@ -32,12 +32,6 @@ test:
     - apt upgrade --yes
     - apt install protobuf-compiler --yes
 
-    - rustup --version
-    - rustup show --verbose
-    - rustc --version
-    - cargo --version
-    - cargo clippy --version
-
     - export NUSHELL_BUILD="nu-$NUSHELL_VERSION-$NUSHELL_ARCH"
     - export PATH="/tmp/:$PATH"
 
@@ -46,12 +40,7 @@ test:
     - tar xvf /tmp/nu.tar.gz --directory /tmp
     - cp "/tmp/$NUSHELL_BUILD/nu" /tmp/nu
 
-    - nu --version
+    - make show
 
   script:
-    - cargo check --workspace --all-targets
-    - cargo clippy --workspace --all-targets -- -D warnings
-    - cargo test --workspace --verbose
-    - nu tests/cli.nu
-    - nu tests/binary.nu
-    - nu examples/cli.nu
+    - make check clippy test example