harness v1.1: cargo debuginfo stripped + target-dir-scoped watchdog

scripts/verify.py

@@ -1,4 +1,4 @@
-"""PatchBench row verification + context expansion harness (v1.0).
+"""PatchBench row verification + context expansion harness (v1.1).
 
 For each candidate row:
   1. clone the repo at base_commit
@@ -34,6 +34,8 @@ to the parser; disk guard is du-based (container quota) and rust builds run unde
 a du watchdog so a runaway build kills the row, not the pod.
 v1.0: used_bytes() timed out on 40G+ du scans (empty output parsed as 0 => guard blind); limit lowered to 32GiB, watchdog polls 20s and reclaims on kill; results pushed to the Hub incrementally after each row so evictions lose at most one row.
 
+v1.1: one dev-profile cargo build grew the shared target dir 6.7G->43G and evicted the pod before the watchdog's du scan could catch it. Fixed both causes: cargo now strips debuginfo and disables incremental compilation in dev/test profiles (no effect on test outcomes, cuts target-dir size several-fold); the in-run watchdog monitors only /tmp/pb-cargo-target (fast du scans even under pressure) at a 20GiB limit instead of scanning all of /tmp at 32GiB.
+
 Usage (inside a job with the right language toolchain image):
   python verify.py --lang go --file pilot/candidates/go.jsonl --limit 6
 """
@@ -49,6 +51,7 @@ MAX_CONTEXT_LINES = 1500
 CONTAINER_QUOTA_BYTES = 50 * 1024**3
 DU_LIMIT_BYTES = 32 * 1024**3
 RUST_SHARED_TARGET = "/tmp/pb-cargo-target"
+RUST_WATCHDOG_LIMIT_BYTES = 20 * 1024**3  # watchdog limit on the target dir alone
 
 LANG_PATH_PREPEND = {
     "go": ["/usr/local/go/bin"],
@@ -210,9 +213,9 @@ def watchdog_wrap(cmd):
         f"printf %s {q} > /tmp/pb_cmd.sh\n"
         "setsid bash /tmp/pb_cmd.sh & pid=$!\n"
         "( while kill -0 $pid 2>/dev/null; do\n"
-        "    used=$(du -sb /tmp /usr/local/cargo 2>/dev/null "
+        "    used=$(du -sb /tmp/pb-cargo-target 2>/dev/null "
         "| awk '{s+=$1} END {print s+0}')\n"
-        f"    if [ \"$used\" -gt {limit} ]; then\n"
+        f"    if [ \"$used\" -gt {RUST_WATCHDOG_LIMIT_BYTES} ]; then\n"
         "      kill -9 -- -$pid 2>/dev/null\n"
         "      echo \"[DISK_WATCHDOG] killed build: container=${used}B\"\n"
         "      rm -rf /tmp/pb-cargo-target 2>/dev/null\n"
@@ -337,6 +340,12 @@ def verify_row(row, lang):
 
     if lang == "rust":
         os.environ["CARGO_TARGET_DIR"] = RUST_SHARED_TARGET
+        # v1.1: a dev-profile build with debuginfo hit 43G on the 50G container
+        # quota. Stripping debuginfo and disabling incremental compilation has
+        # no effect on test outcomes, only on build artifacts.
+        os.environ["CARGO_PROFILE_DEV_DEBUG"] = "0"
+        os.environ["CARGO_PROFILE_TEST_DEBUG"] = "0"
+        os.environ["CARGO_INCREMENTAL"] = "0"
     os.environ["PATH"] = ":".join(LANG_PATH_PREPEND.get(lang, [])) + ":" + os.environ["PATH"]
     def tb(cmds):
         return [c.replace(TESTBED, repo_dir) for c in (cmds or [])]