Force logs encoding

lib/pipeline/build/container_build.rb

@@ -32,7 +32,7 @@ module Pipeline::Build
         image: image_name,
         image_tag: image_tag,
         git_tag: build_tag,
-        logs: img.logs.inspect.force_encoding("ISO-8859-1").encode("UTF-8")
+        logs: img.logs.inspect
       }
     end
 

lib/pipeline/util/external_command.rb

@@ -56,13 +56,22 @@ module Pipeline::Util
       {
         cmd: cmd_string,
         success: success?,
-        stdout: stdout,
+        stdout: fix_encoding(stdout),
-        stderr: stderr
+        stderr: fix_encoding(stderr)
       }
     end
 
     private
 
+    def fix_encoding(text)
+      return nil if text.nil
+      text.force_encoding("ISO-8859-1").encode("UTF-8")
+    rescue => e
+      puts e.message
+      puts e.backtrace
+      "--- failed to encode as UTF-8: #{e.message} ---"
+    end
+
     def invoke_process
       c = cmd
       captured_stdout = []