eulermark: make sure language name is shown, while benchmarking
eulermark: make sure language name is shown, while benchmarking

japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs,japaric/eulermark.rs