Printing a composed function abruptly terminates Rascal console

[msteindorfer]

When composing two functions f and f2 with f o f2, the console is not able to print the result. Instead, it terminates the console abruptly without a message. See complete snippet below.

rascal>int f(int x) = x + 1;
int (int): func(
  int(),
  [int()],
  [],
  {},origin=|prompt:///|(0,21,<1,0>,<1,21>))
rascal>int f2(int x) = x + 1;
int (int): func(
  int(),
  [int()],
  [],
  {},origin=|prompt:///|(0,22,<1,0>,<1,22>))
rascal>(f o f2)(1)
int: 3
rascal>(f o f2)
int (...): 

No trace or error message shown. It just stops.

[jurgenvinju]

fixed