--# run #--
--- error ---
abort
	↳ from test/tests/merge nested mutable error bis.ans:14:7 in call: error("abort")
	↳ from test/tests/merge nested mutable error bis.ans:3:1 in block: insert(a, b)…
	↳ from test/tests/merge nested mutable error bis.ans:3:18 in call: _
	↳ from test/tests/merge nested mutable error bis.ans:3:17 in return boundary: _
	↳ from script.ans:29:6 in call: fn!
	↳ from script.ans:27:3 in block: resumed from = ()…
	↳ from script.ans:27:7 in call: else!
	↳ from script.ans:27:3 in partial scope: else!…
	↳ from script.ans:23:2 in block: if(fn . "current checkpoint")…
	↳ from script.ans:23:9 in call: _
	↳ from script.ans:23:7 in return boundary: _
	↳ from script.ans:37:9 in call: value(s)!
	↳ from script.ans:36:1 in block: value(s)!
	↳ from script.ans:36:20 in call: _
	↳ from script.ans:36:1 in return boundary: _
	↳ from test/tests/merge nested mutable error bis.ans:19:2 in call: f!
	↳ from ? in block: :a = *[1]…
--# post run check #--
--- text ---
| {}"[1,[2,3]]: " {}"*[1, *[2, 3]]" {}"" |
--- return ---
()
--# saved #--
{"f.checkpoint":#d, "f.reached":*{#c:1, #d:1}}