rename so names are unique in benchmarks

Cargo.lock

@@ -1542,9 +1542,9 @@ dependencies = [
 
 [[package]]
 name = "linked-hash-map"
-version = "0.5.3"
+version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8dd5a6d5999d9907cda8ed67bbd137d3af8085216c2ac62de5be860bd41f304a"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
 
 [[package]]
 name = "llvm-sys"
@@ -2904,6 +2904,7 @@ version = "0.1.0"
 dependencies = [
  "bumpalo",
  "indoc",
+ "linked-hash-map",
  "maplit",
  "pretty_assertions",
  "quickcheck",

examples/benchmarks/NQueens.roc

@@ -18,10 +18,10 @@ length : ConsList a -> I64
 length = \xs -> lengthHelp xs 0
 
 lengthHelp : ConsList a, I64 -> I64
-lengthHelp = \xs, acc ->
-    when xs is
+lengthHelp = \foobar, acc ->
+    when foobar is
+        Cons _ lrest -> lengthHelp lrest (1 + acc)
         Nil -> acc
-        Cons _ rest -> lengthHelp rest (1 + acc)
 
 safe : I64, I64, ConsList I64 -> Bool
 safe = \queen, diagonal, xs ->
@@ -41,8 +41,8 @@ appendSafe = \k, soln, solns ->
     else
         appendSafe (k - 1) soln solns
 
-extend = \n, acc, solns ->
-    when solns is
+extend = \n, acc, solutions ->
+    when solutions is
         Nil -> acc
         Cons soln rest -> extend n (appendSafe n soln acc) rest