WINDOW: use mpv_observe_property for deprecated MPV_EVENTs

.gitlab-ci.yml

@@ -25,8 +25,11 @@
 
 .common_build:
     before_script:
-        - apt update && apt -y install make libmpv-dev cmake clang clang-format gcc g++ libomp-dev libsdl2-dev libsdl2-image-dev xxd mkvtoolnix libcurl4-openssl-dev libsqlite3-dev manpages man-db cargo
+        - apt update && apt -y install make libmpv-dev cmake clang clang-format gcc g++ libomp-dev libsdl2-dev libsdl2-image-dev xxd mkvtoolnix libcurl4-openssl-dev libsqlite3-dev manpages man-db rustup
     script:
+        - rustc --version
+        - cargo --version
+        - rustup default beta
         - cmake -Bbuild -DCMAKE_C_COMPILER=${c_compiler} -DCMAKE_CXX_COMPILER=${cxx_compiler} && make -Cbuild
 
 variables: