compile-file-error for src/special-operators with ECL 20.4.24:

Using the recently released ECL 20.4.24 (Guix package) and Parenscript from Quicklisp 2020-04-27 I get

COMPILE-FILE-ERROR while compiling
   #<cl-source-file "parenscript" "src" "special-operators">
   [Condition of type UIOP/LISP-BUILD:COMPILE-FILE-ERROR]

Restarts:
 0: [RETRY] Retry compiling #<cl-source-file "parenscript" "src" "special-operators">.
 1: [ACCEPT] Continue, treating compiling #<cl-source-file "parenscript" "src" "special-operators"> as having been successful.
 2: [RETRY] Retry ASDF operation.
 3: [CLEAR-CONFIGURATION-AND-RETRY] Retry ASDF operation after resetting the configuration.
 4: [RETRY] Retry ASDF operation.
 5: [CLEAR-CONFIGURATION-AND-RETRY] Retry ASDF operation after resetting the configuration.
 --more--

Backtrace:
  0: G1175
  1: #<bytecompiled-function BYTECODES 0x7fad53b18000>
  2: G81
  3: TRACK-PACKAGE
  4: G80
  5: G79
  6: G462
  7: REPL-EVAL
  8: LISTENER-EVAL
  9: #<bytecompiled-function BYTECODES 0x7fad53b18050>
 10: G540
 11: G537
 12: G571
 13: REPL-LOOP
 14: G50
 15: G49
 16: NIL