Clojurians Log v2

Hi. I was reading https://dragan.rocks/articles/18/Neanderthal-vs-ND4J-vol2 and saw this example. Is this use of with-release actually memory safe? e.g., if the mapping function threw part way through the list its looping over, will it safely dispose of the already looped over values? e.g., [m1, m2, ex!!!] - will m1 and m2 be released?

(defn bench-neanderthal-mm [dimensions]
  (with-release [ms (map (comp (partial fmap! random) fge)
                         (butlast dimensions) (rest dimensions))]
    (quick-bench
     (release (apply mm ms)))))