Minimal fix for artifacts service

app/services/ci/create_trace_artifact_service.rb

@@ -4,13 +4,34 @@ module Ci
       return if job.job_artifacts_trace
 
       job.trace.read do |stream|
-        if stream.file?
-          job.create_job_artifacts_trace!(
-            project: job.project,
-            file_type: :trace,
-            file: stream)
+        return unless stream.file?
+
+        temp_file!(JobArtifactUploader.workhorse_upload_path) do |temp_path|
+          FileUtils.cp(stream.path, temp_path)
+          create_job_trace!(temp_path)
+          FileUtils.rm(stream.path)
         end
       end
     end
+
+    private
+
+    def create_job_trace!(path)
+      job.create_job_artifacts_trace!(
+        project: job.project,
+        file_type: :trace,
+        file: UploadedFile.new(path, 'build.log', 'application/octet-stream')
+      )
+    end
+
+    def temp_file!(temp_dir)
+      FileUtils.mkdir_p(temp_dir)
+      temp_file = Tempfile.new('file', temp_dir)
+      temp_file&.close
+      yield(temp_file.path)
+    ensure
+      temp_file&.close
+      temp_file&.unlink
+    end
   end
 end