CI: save meson build logs

.gitlab-ci.yml

@@ -16,6 +16,11 @@ fedora-meson:
   stage: build
   script:
    - bash -x ./.gitlab-ci/test-docker-meson.sh
+  artifacts:
+    when: always
+    name: "gtk3-${CI_JOB_NAME}-${CI_COMMIT_REF_NAME}"
+    paths:
+      - "_build/meson-logs"
 
 msys2-mingw32-meson:
   variables:
@@ -27,6 +32,11 @@ msys2-mingw32-meson:
   script:
     - C:\msys64\usr\bin\pacman --noconfirm -Syyuu
     - C:\msys64\usr\bin\bash -lc "bash -x ./.gitlab-ci/test-msys2-meson.sh"
+  artifacts:
+    when: always
+    name: "gtk3-%CI_JOB_NAME%-%CI_COMMIT_REF_NAME%"
+    paths:
+      - "_build/meson-logs"
 
 msys2-mingw32-autotools:
   when: manual