[librsvg] (#417) - Make the "cargo fmt" lint step in CI a manual process

[Federico Mena Quintero <federico src gnome org>]

commit 9254017d6abe48fcdc61be6c4b14d684fba79ce0
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Feb 20 18:25:29 2019 -0600

    (#417) - Make the "cargo fmt" lint step in CI a manual process
    
    https://gitlab.gnome.org/GNOME/librsvg/issues/417

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d0e9493a..aa119de7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -129,6 +129,7 @@ rustfmt:
     - rustc --version && cargo --version
     - cargo fmt --version
     - cargo fmt --all -- --check
+  when: manual
 
 # Configure and run clippy on nightly
 # Only fails on errors atm.