add missing test for new FailureReason variant

Author: Skgland

src/results/mod.rs

@@ -356,6 +356,7 @@ mod tests {
         //"build-fail:depends-on()" => BuildFail(DependsOn(vec!["001"])),
         test_from_str! {
             "build-fail:unknown" => BuildFail(Unknown),
+            "build-fail:docker" => BuildFail(Docker),
             "build-fail:compiler-error(001, 002)" => BuildFail(CompilerError(btreeset!["001".parse().unwrap(), "002".parse().unwrap()])),
             "build-fail:compiler-error(001)" => BuildFail(CompilerError(btreeset!["001".parse().unwrap()])),
             "build-fail:oom" => BuildFail(OOM),