wip: [skip-ci] duplicate clustertest fixes for testing

Cargo.toml

@@ -242,6 +242,7 @@ vmemcached = "0.5.0"
 walkdir = "2.5.0"
 xxhash-rust = { version = "0.8.10", features = ["xxh3"] }
 zipf = "7.0.1"
+jobserver = "0.1.32"
 
 [profile.release]
 debug=true

readyset-clustertest/Cargo.toml

@@ -40,6 +40,10 @@ readyset-clustertest-macros = { path = "./macros" }
 readyset-tracing = { path = "../readyset-tracing" }
 rust_decimal = { workspace = true }
 
+[build-dependencies]
+anyhow = { workspace = true }
+jobserver = { workspace = true }
+
 [[bench]]
 name = "clustering"
 harness = false

readyset-clustertest/build.rs

@@ -1,30 +1,33 @@
+use anyhow::{anyhow, Result};
+use jobserver::Client;
 use std::env;
 use std::path::Path;
 
-fn main() {
+fn main() -> Result<()> {
     if env::var("CLIPPY_ARGS").is_ok() {
         // running via cargo clippy; don't bother compiling test dependencies
-        return;
+        return Ok(());
     }
-    env::set_current_dir(Path::new("..")).expect("failed to change path");
-    let status = std::process::Command::new("cargo")
-        .args([
-            "--locked",
-            "build",
-            "--target-dir",
-            "target/clustertest",
-            "--release",
-            "--bin",
-            "readyset",
-            "--bin",
-            "readyset-server",
-            "--features",
-            "failure_injection",
-        ])
-        .status()
-        .expect("failed to execute cargo");
-    assert!(
-        status.success(),
-        "cargo exited with nonzero status: {status}"
-    );
+    env::set_current_dir(Path::new(".."))?;
+    let client = unsafe { Client::from_env_ext(false).client }?;
+    let mut cmd = std::process::Command::new("cargo");
+    cmd.args([
+        "--locked",
+        "build",
+        "--target-dir",
+        "target/clustertest",
+        "--release",
+        "--bin",
+        "readyset",
+        "--bin",
+        "readyset-server",
+        "--features",
+        "failure_injection",
+    ]);
+    client.configure(&mut cmd);
+    let status = cmd.status()?;
+    if !status.success() {
+        return Err(anyhow!("cargo exited with nonzero status: {status}"));
+    }
+    Ok(())
 }