Attempt to fix 'spawn error' on Windows tests

scripts/runner.node.mjs

@@ -104,15 +104,19 @@ async function printInfo() {
     console.log("Glibc:", getGlibcVersion());
   }
   console.log("Hostname:", getHostname());
-  if (isCloud) {
-    console.log("Public IP:", await getPublicIp());
-    console.log("Cloud:", getCloud());
-  }
   if (isCI) {
     console.log("CI:", getCI());
     console.log("Shard:", options["shard"], "/", options["max-shards"]);
     console.log("Build URL:", getBuildUrl());
     console.log("Environment:", process.env);
+    if (isCloud) {
+      console.log("Public IP:", await getPublicIp());
+      console.log("Cloud:", getCloud());
+    }
+    const tailscaleIp = await getTailscaleIp();
+    if (tailscaleIp) {
+      console.log("Tailscale IP:", tailscaleIp);
+    }
   }
   console.log("Cwd:", cwd);
   console.log("Tmpdir:", tmpPath);
@@ -136,6 +140,30 @@ async function runTests() {
   }
   console.log("Bun:", execPath);
 
+  for (let i = 0; i < 10; i++) {
+    try {
+      const { error } = spawnSync(execPath, ["--version"], {
+        encoding: "utf-8",
+        timeout: spawnTimeout,
+        env: {
+          PATH: process.env.PATH,
+          BUN_DEBUG_QUIET_LOGS: 1,
+        },
+      });
+      if (!error) {
+        break;
+      }
+      throw error;
+    } catch (error) {
+      const { code } = error;
+      if (code === "EBUSY" || code === "UNKNOWN") {
+        console.log(`Bun appears to be busy, retrying... [code: ${code}]`);
+        await new Promise(resolve => setTimeout(resolve, 1000 * (i + 1)));
+        continue;
+      }
+    }
+  }
+
   const revision = getRevision(execPath);
   console.log("Revision:", revision);
 
@@ -973,7 +1001,7 @@ async function getExecPathFromBuildKite(target) {
   if (isWindows) {
     await spawnSafe({
       command: "powershell",
-      args: ["-Command", `Expand-Archive -Path ${zipPath} -DestinationPath ${releasePath}`],
+      args: ["-Command", `Expand-Archive -Path ${zipPath} -DestinationPath ${releasePath} -Force`],
     });
   } else {
     await spawnSafe({
@@ -1298,6 +1326,26 @@ async function getPublicIp() {
   }
 }
 
+/**
+ * @returns {string | undefined}
+ */
+function getTailscaleIp() {
+  try {
+    const { status, stdout } = spawnSync("tailscale", ["ip", "--1"], {
+      encoding: "utf-8",
+      timeout: spawnTimeout,
+      env: {
+        PATH: process.env.PATH,
+      },
+    });
+    if (status === 0) {
+      return stdout.trim();
+    }
+  } catch {
+    // ...
+  }
+}
+
 /**
  * @param  {...string} paths
  * @returns {string}