try the following elisp bit:

(defun credmp/flymake-display-err-minibuf ()
“Displays the error/warning for the current line in the minibuffer”
(interactive)
(let* ((line-no (flymake-current-line-no))
(line-err-info-list (nth 0 (flymake-find-err-info flymake-err-info line-no)))
(count (length line-err-info-list))
)
(while (> count 0)
(when line-err-info-list
(let* ((file (flymake-ler-file (nth (1- count) line-err-info-list)))
(full-file (flymake-ler-full-file (nth (1- count) line-err-info-list)))
(text (flymake-ler-text (nth (1- count) line-err-info-list)))
(line (flymake-ler-line (nth (1- count) line-err-info-list))))
(message “[%s] %s” line text)
)
)
(setq count (1- count)))))

Just bind it to a usefull key and you have messages in your message area

Regards

Core