error: Name `b` forms or references an illegal self-referential cycle (1/13).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:5:13
  |
5 |         a = b -> k;
  |             ^

error: Name `c` forms or references an illegal self-referential cycle (2/13).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:7:13
  |
7 |         b = c;
  |             ^

error: Name `d` forms or references an illegal self-referential cycle (3/13).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:8:13
  |
8 |         c = d;
  |             ^

error: Name `e` forms or references an illegal self-referential cycle (4/13).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:9:13
  |
9 |         d = e;
  |             ^

error: Name `f` forms or references an illegal self-referential cycle (5/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:10:13
   |
10 |         e = f;
   |             ^

error: Name `g` forms or references an illegal self-referential cycle (6/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:11:13
   |
11 |         f = g;
   |             ^

error: Name `h` forms or references an illegal self-referential cycle (7/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:12:13
   |
12 |         g = h;
   |             ^

error: Name `i` forms or references an illegal self-referential cycle (8/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:13:13
   |
13 |         h = i;
   |             ^

error: Name `j` forms or references an illegal self-referential cycle (9/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:14:13
   |
14 |         i = j;
   |             ^

error: Name `a` forms or references an illegal self-referential cycle (10/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:15:13
   |
15 |         j = a;
   |             ^

error: Name `k` forms or references an illegal self-referential cycle (11/13).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:5:18
  |
5 |         a = b -> k;
  |                  ^

error: Name `l` forms or references an illegal self-referential cycle (12/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:17:13
   |
17 |         k = l;
   |             ^

error: Name `m` forms or references an illegal self-referential cycle (13/13).
  --> tests/compile-fail/surface_forwardref_chain_double.rs:18:13
   |
18 |         l = m;
   |             ^

error: Name `k` forms or references an illegal self-referential cycle (1/1).
 --> tests/compile-fail/surface_forwardref_chain_double.rs:5:18
  |
5 |         a = b -> k;
  |                  ^