Otherwise, these fail in continuous.
[Test]
-Exec=/bin/sh -c "GTK_THEME=Adwaita:dark @libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
+Exec=/bin/sh -c "env GTK_THEME=Adwaita:dark G_ENABLE_DIAGNOSTIC=0 @libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
Type=session-exclusive
[Test]
-Exec=/bin/sh -c "GTK_THEME=HighContrast @libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
+Exec=/bin/sh -c "env GTK_THEME=HighContrast G_ENABLE_DIAGNOSTIC=0 @libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
Type=session-exclusive
[Test]
-Exec=/bin/sh -c "@libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
+Exec=/bin/sh -c "env G_ENABLE_DIAGNOSTIC=0 @libexecdir@/installed-tests/gtk+/gtk-reftest -k --verbose --output $(pwd) --directory @libexecdir@/installed-tests/gtk+/reftests"
Type=session-exclusive