error: Indexing on output is overwritten below ($DIR/tests/compile-fail/surface_port_naked_overwrite_knot_b_out.rs:11:13) (1/2).
 --> tests/compile-fail/surface_port_naked_overwrite_knot_b_out.rs:8:21
  |
8 |         x_1 = pivot[1];
  |                     ^

error: Cannot index on already-indexed output, previously indexed above ($DIR/tests/compile-fail/surface_port_naked_overwrite_knot_b_out.rs:8:21) (2/2).
  --> tests/compile-fail/surface_port_naked_overwrite_knot_b_out.rs:11:13
   |
11 |         x_1[0] -> [1]x_1; // Error: `pivot[1][0]`
   |             ^