diff --git a/.github/workflows/shared.yml b/.github/workflows/shared.yml
index fc254ade48..5370408b26 100644
--- a/.github/workflows/shared.yml
+++ b/.github/workflows/shared.yml
@@ -79,4 +79,4 @@ jobs:
       - if: ${{ matrix.os == 'ubuntu-latest' }}
         name: run urbit-tests
         run: |
-          nix flake check --keep-build-log
+          nix flake check --keep-build-log -L
diff --git a/nix/test-fake-ship.nix b/nix/test-fake-ship.nix
index 18d1f8bf22..00bddfaeab 100644
--- a/nix/test-fake-ship.nix
+++ b/nix/test-fake-ship.nix
@@ -35,7 +35,7 @@ let
         ${poke}
         =/  m  (strand ,vase)
         ;<  [=ship =desk =case]  bind:m  get-beak
-        ;<  ok=?  bind:m  (poke [ship %dojo] %lens-command !>([%$ [%dojo '${dojoCommand}'] [%output-file 'result/noun']]))
+        ;<  ok=?  bind:m  (poke [ship %dojo] %lens-command !>([%$ [%dojo '${dojoCommand}'] [%stdout ~]]))
         (pure:m !>(ok))
       '';
     };
@@ -93,24 +93,20 @@ in pkgs.stdenvNoCC.mkDerivation {
     ${click} -k -p -i ${pokeApp "%generators" "noun" "test"} ./pier
     ${click} -k -p -i ${pokeApp "%marks" "noun" "test"} ./pier
 
-    # The rest of the commands fail for unknown reasons.
+    ${click} -k -p -i ${appThread "mass" "hood"} ./pier
+    sleep 2
 
-    # ${click} -k -p -i ${appThread "mass" "hood"} ./pier
-    # sleep 2
+    ${click} -k -p -i ${pokeApp "~" "helm-pack" "hood"} ./pier
 
-    # ${click} -k -p -i ${pokeApp "~" "helm-pack" "hood"} ./pier
+    ${click} -k -p -i ${appThread "trim" "hood"} ./pier
 
-    # ${click} -k -p -i ${appThread "trim" "hood"} ./pier
+    ${click} -k -p -i ${appThread "mass" "hood"} ./pier
 
-    # ${click} -k -p -i ${appThread "mass" "hood"} ./pier
+    ${click} -k -p -i ${appThread "meld" "hood"} ./pier
 
-    # ${click} -k -p -i ${appThread "meld" "hood"} ./pier
+    ${click} -k -p -i ${appThread "mass" "hood"} ./pier
 
-    # sleep 60
-
-    # ${click} -k -p -i ${appThread "mass" "hood"} ./pier
-
-    # ${click} -k -p -i ${appThread "exit" "hood"} ./pier
+    ${click} -k -p -i ${appThread "exit" "hood"} ./pier
 
     set +x
   '';
diff --git a/pkg/base-dev/lib/strandio.hoon b/pkg/base-dev/lib/strandio.hoon
index 6735d9060a..f49ee172eb 100644
--- a/pkg/base-dev/lib/strandio.hoon
+++ b/pkg/base-dev/lib/strandio.hoon
@@ -581,8 +581,9 @@
 ++  check-for-file
   |=  [[=ship =desk =case] =spur]
   =/  m  (strand ,?)
-  ;<  =riot:clay  bind:m  (warp ship desk ~ %sing %x case spur)
-  (pure:m ?=(^ riot))
+  ;<  =riot:clay  bind:m  (warp ship desk ~ %sing %u case spur)
+  ?>  ?=(^ riot)
+  (pure:m !<(? q.r.u.riot))
 ::
 ++  list-tree
   |=  [[=ship =desk =case] =spur]