ci: Check the formatting of rust files

Part of #2930

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5235>

.gitlab-ci.yml

@@ -211,6 +211,18 @@ gst indent:
     - if: '$CI_PROJECT_NAMESPACE != "gstreamer" || $CI_COMMIT_BRANCH != $GST_UPSTREAM_BRANCH'
       when: 'always'
 
+rustfmt:
+  extends:
+    - '.fedora image'
+    - '.fdo.suffixed-image@fedora'
+  stage: 'preparation'
+  needs:
+    - "fedora amd64 docker"
+  script:
+    - export RUSTUP_HOME="/usr/local/rustup"
+    - export PATH="/usr/local/cargo/bin:$PATH"
+    - ./scripts/format-rust --check
+
 commitlint:
   extends:
     - '.commitlint image'

.gitlab-image-tags.yml

@@ -5,7 +5,7 @@ variables:
   # If you are hacking on them or need a them to rebuild, its enough
   # to change any part of the string of the image you want.
   ###
-  FEDORA_TAG:  '2023-08-24.0'
+  FEDORA_TAG:  '2023-08-25.1'
 
   INDENT_TAG: '2023-06-14.1'
 

ci/docker/fedora/prepare.sh

@@ -232,7 +232,7 @@ export CARGO_HOME="/usr/local/cargo"
 export PATH="/usr/local/cargo/bin:$PATH"
 
 chmod +x rustup-init;
-./rustup-init -y --no-modify-path --profile minimal --default-toolchain $RUST_VERSION;
+./rustup-init -y --no-modify-path --default-toolchain $RUST_VERSION;
 rm rustup-init;
 chmod -R a+w $RUSTUP_HOME $CARGO_HOME
 

scripts/format-rust

@@ -0,0 +1,5 @@
+#! /bin/bash
+
+set -e
+
+find -name "*.rs" -exec rustfmt "$@" --edition 2021 {} +