diff --git a/run.json b/run.json
index 06c9dc4b2..06161788b 100644
--- a/run.json
+++ b/run.json
@@ -353,7 +353,7 @@
     "kind": "running"
   },
   "status_updated_at": "2026-05-29T12:32:33.121653Z",
-  "last_event_at": "2026-05-29T12:32:47.637652Z",
+  "last_event_at": "2026-05-29T12:32:51.595681Z",
   "pending_control": null,
   "checkpoints": [
     {
@@ -667,9 +667,9 @@
       }
     },
     {
-      "seq": 0,
+      "seq": 58,
       "checkpoint": {
-        "timestamp": "2026-05-29T12:32:47.761642Z",
+        "timestamp": "2026-05-29T12:32:51.593545Z",
         "current_node": "lint_rust",
         "completed_nodes": [
           "start",
@@ -679,18 +679,156 @@
           "lint_rust"
         ],
         "node_retries": {},
+        "context_values": {
+          "internal.fidelity": "compact",
+          "failure_class": "deterministic",
+          "internal.thread_id": "compile_typescript",
+          "internal.work_dir": "/workspace/fabro",
+          "thread.start.current_node": "toolchain",
+          "graph.retry_target": "exit",
+          "internal.run_id": "01KSSVH9SF4TMGP939NYYZQDMZ",
+          "thread.compile_rust.current_node": "compile_typescript",
+          "internal.retry_count.compile_typescript": 0,
+          "failure_signature": "lint_rust|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: cargo: command not found",
+          "internal.retry_count.lint_rust": 0,
+          "command.output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd",
+          "current_node": "lint_rust",
+          "internal.retry_count.compile_rust": 0,
+          "internal.retry_count.toolchain": 0,
+          "outcome": "failed",
+          "graph.goal": "Verify the sandbox can lint and test the project",
+          "internal.node_visit_count": 1,
+          "thread.compile_typescript.current_node": "lint_rust",
+          "thread.toolchain.current_node": "compile_rust",
+          "internal.retry_count.start": 0,
+          "graph.rankdir": "LR"
+        },
+        "node_outcomes": {
+          "compile_rust": {
+            "status": "failed",
+            "context_updates": {
+              "command.output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd"
+            },
+            "failure": {
+              "message": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: cargo: command not found\n",
+              "category": "deterministic"
+            },
+            "usage": null,
+            "timing": {
+              "wall_time_ms": 0,
+              "inference_time_ms": 0,
+              "tool_time_ms": 116,
+              "active_time_ms": 116
+            }
+          },
+          "compile_typescript": {
+            "status": "failed",
+            "context_updates": {
+              "command.output": "blob://sha256/ffaf0781e0b2d81b700d17ef09379260140132da55200d9752e66b1008350e10"
+            },
+            "failure": {
+              "message": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: bun: command not found\n",
+              "category": "deterministic"
+            },
+            "usage": null,
+            "timing": {
+              "wall_time_ms": 0,
+              "inference_time_ms": 0,
+              "tool_time_ms": 119,
+              "active_time_ms": 119
+            }
+          },
+          "lint_rust": {
+            "status": "failed",
+            "context_updates": {
+              "command.output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd"
+            },
+            "failure": {
+              "message": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: cargo: command not found\n",
+              "category": "deterministic"
+            },
+            "usage": null,
+            "timing": {
+              "wall_time_ms": 0,
+              "inference_time_ms": 0,
+              "tool_time_ms": 118,
+              "active_time_ms": 118
+            }
+          },
+          "start": {
+            "status": "succeeded",
+            "usage": null
+          },
+          "toolchain": {
+            "status": "failed",
+            "context_updates": {
+              "command.output": "blob://sha256/bad20d1b780e7bea92c9a1e98ee7f0eeda6a62992f8c0c4f37f32f0ed3e42193"
+            },
+            "failure": {
+              "message": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: rustc: command not found\n",
+              "category": "deterministic"
+            },
+            "usage": null,
+            "timing": {
+              "wall_time_ms": 0,
+              "inference_time_ms": 0,
+              "tool_time_ms": 121,
+              "active_time_ms": 121
+            }
+          }
+        },
+        "next_node_id": "test_rust",
+        "git_commit_sha": "41e7b27ee8a975837d90790cfb17782ea2c15153",
+        "loop_failure_signatures": {
+          "compile_typescript|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: bun: command not found": 1,
+          "toolchain|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: rustc: command not found": 1,
+          "compile_rust|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: cargo: command not found": 1,
+          "lint_rust|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: cargo: command not found": 1
+        },
+        "node_visits": {
+          "toolchain": 1,
+          "compile_typescript": 1,
+          "lint_rust": 1,
+          "compile_rust": 1,
+          "start": 1
+        }
+      },
+      "diff": {
+        "summary": {
+          "files_changed": 0,
+          "additions": 0,
+          "deletions": 0
+        }
+      }
+    },
+    {
+      "seq": 0,
+      "checkpoint": {
+        "timestamp": "2026-05-29T12:32:51.722830Z",
+        "current_node": "test_rust",
+        "completed_nodes": [
+          "start",
+          "toolchain",
+          "compile_rust",
+          "compile_typescript",
+          "lint_rust",
+          "test_rust"
+        ],
+        "node_retries": {},
         "context_values": {
           "internal.retry_count.toolchain": 0,
           "internal.retry_count.compile_rust": 0,
           "outcome": "failed",
-          "current_node": "lint_rust",
+          "internal.retry_count.test_rust": 0,
+          "thread.lint_rust.current_node": "test_rust",
+          "current_node": "test_rust",
           "command.output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd",
           "internal.run_id": "01KSSVH9SF4TMGP939NYYZQDMZ",
           "failure_class": "deterministic",
           "internal.node_visit_count": 1,
           "internal.retry_count.start": 0,
           "thread.toolchain.current_node": "compile_rust",
-          "failure_signature": "lint_rust|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: cargo: command not found",
+          "failure_signature": "test_rust|deterministic|script failed with exit code: <n> ## output /bin/bash: line <n>: cargo: command not found",
           "thread.compile_rust.current_node": "compile_typescript",
           "thread.compile_typescript.current_node": "lint_rust",
           "graph.retry_target": "exit",
@@ -698,12 +836,29 @@
           "graph.goal": "Verify the sandbox can lint and test the project",
           "internal.fidelity": "compact",
           "internal.retry_count.compile_typescript": 0,
-          "internal.thread_id": "compile_typescript",
+          "internal.thread_id": "lint_rust",
           "internal.retry_count.lint_rust": 0,
           "graph.rankdir": "LR",
           "thread.start.current_node": "toolchain"
         },
         "node_outcomes": {
+          "test_rust": {
+            "status": "failed",
+            "context_updates": {
+              "command.output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd"
+            },
+            "failure": {
+              "message": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: cargo: command not found\n",
+              "category": "deterministic"
+            },
+            "usage": null,
+            "timing": {
+              "wall_time_ms": 0,
+              "inference_time_ms": 0,
+              "tool_time_ms": 121,
+              "active_time_ms": 121
+            }
+          },
           "compile_typescript": {
             "status": "failed",
             "context_updates": {
@@ -777,8 +932,9 @@
             }
           }
         },
-        "next_node_id": "test_rust",
+        "next_node_id": "test_typescript",
         "node_visits": {
+          "test_rust": 1,
           "compile_rust": 1,
           "start": 1,
           "toolchain": 1,
@@ -820,7 +976,12 @@
       "first_event_seq": 51,
       "prompt": null,
       "response": null,
-      "completion": null,
+      "completion": {
+        "outcome": "failed",
+        "notes": null,
+        "failure_reason": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: cargo: command not found\n",
+        "timestamp": "2026-05-29T12:32:47.761067Z"
+      },
       "provider_used": null,
       "diff": null,
       "script_invocation": {
@@ -828,10 +989,53 @@
         "command": "exec 2>&1\ncargo +nightly-2026-04-14 fmt --check --all 2>&1 && cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1",
         "language": "shell"
       },
+      "script_timing": {
+        "output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd",
+        "exit_code": 127,
+        "duration_ms": 118,
+        "termination": "exited",
+        "output_bytes": 44,
+        "live_streaming": true
+      },
+      "parallel_results": null,
+      "output": null,
+      "output_bytes": 44,
+      "live_streaming": true,
+      "termination": "exited",
+      "started_at": "2026-05-29T12:32:47.637400Z",
+      "handler": "command",
+      "timing": {
+        "wall_time_ms": 123,
+        "inference_time_ms": 0,
+        "tool_time_ms": 118,
+        "active_time_ms": 118
+      },
+      "usage": {
+        "input_tokens": 0,
+        "output_tokens": 0,
+        "total_tokens": 0,
+        "reasoning_tokens": 0,
+        "cache_read_tokens": 0,
+        "cache_write_tokens": 0
+      },
+      "state": "failed"
+    },
+    "test_rust@1": {
+      "first_event_seq": 61,
+      "prompt": null,
+      "response": null,
+      "completion": null,
+      "provider_used": null,
+      "diff": null,
+      "script_invocation": {
+        "script": "ulimit -n 4096 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1",
+        "command": "exec 2>&1\nulimit -n 4096 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1",
+        "language": "shell"
+      },
       "script_timing": null,
       "parallel_results": null,
       "output": null,
-      "started_at": "2026-05-29T12:32:47.637400Z",
+      "started_at": "2026-05-29T12:32:51.595361Z",
       "handler": "command",
       "usage": {
         "input_tokens": 0,
diff --git a/stages/005-lint_rust@1/output.log b/stages/005-lint_rust@1/output.log
new file mode 100644
index 000000000..047cad908
--- /dev/null
+++ b/stages/005-lint_rust@1/output.log
@@ -0,0 +1 @@
+blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd
\ No newline at end of file
diff --git a/stages/005-lint_rust@1/script_timing.json b/stages/005-lint_rust@1/script_timing.json
new file mode 100644
index 000000000..0bf6b31f5
--- /dev/null
+++ b/stages/005-lint_rust@1/script_timing.json
@@ -0,0 +1,8 @@
+{
+  "output": "blob://sha256/8c6308b179d7566053f30e801ad9d5821551d6cbae0f61b7673b79bbdd03a2cd",
+  "exit_code": 127,
+  "duration_ms": 118,
+  "termination": "exited",
+  "output_bytes": 44,
+  "live_streaming": true
+}
\ No newline at end of file
diff --git a/stages/005-lint_rust@1/status.json b/stages/005-lint_rust@1/status.json
new file mode 100644
index 000000000..ceb1ee653
--- /dev/null
+++ b/stages/005-lint_rust@1/status.json
@@ -0,0 +1,6 @@
+{
+  "outcome": "failed",
+  "notes": null,
+  "failure_reason": "Script failed with exit code: 127\n\n## output\n/bin/bash: line 2: cargo: command not found\n",
+  "timestamp": "2026-05-29T12:32:47.761067Z"
+}
\ No newline at end of file
diff --git a/stages/006-test_rust@1/script_invocation.json b/stages/006-test_rust@1/script_invocation.json
new file mode 100644
index 000000000..2f48727ac
--- /dev/null
+++ b/stages/006-test_rust@1/script_invocation.json
@@ -0,0 +1,5 @@
+{
+  "script": "ulimit -n 4096 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1",
+  "command": "exec 2>&1\nulimit -n 4096 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1",
+  "language": "shell"
+}
\ No newline at end of file