message: Replace tests/arithmetic.rs String::from to to_owned()
diff: @@ -85,11 +85,11 @@ fn arithmetic() {
  "UPDATE Arith SET id = name / 1",
  ),
  (
  - UpdateError::ColumnNotFound(String::from("aaa")).into(),
  + UpdateError::ColumnNotFound("aaa".to_owned()).into(),
  "UPDATE Arith SET num = aaa + 1",
  ),
  (
  - UpdateError::ColumnNotFound(String::from("aaa")).into(),
  + UpdateError::ColumnNotFound("aaa".to_owned()).into(),
  "UPDATE Arith SET aaa = 1",
  ),
  ];
  