paritytech · mrcnski · Nov 14, 2023 · Sep 24, 2023 · Sep 24, 2023 · Sep 24, 2023
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/polkadot/node/core/pvf/common/src/prepare.rs b/polkadot/node/core/pvf/common/src/prepare.rs
@@ -19,8 +19,6 @@ use parity_scale_codec::{Decode, Encode};
 /// Preparation statistics, including the CPU time and memory taken.
 #[derive(Debug, Clone, Default, Encode, Decode)]
 pub struct PrepareStats {
-	/// The CPU time that elapsed for the preparation job.
-	pub cpu_time_elapsed: std::time::Duration,
 	/// The observed memory statistics for the preparation job.
 	pub memory_stats: MemoryStats,
 }

diff --git a/polkadot/node/core/pvf/prepare-worker/Cargo.toml b/polkadot/node/core/pvf/prepare-worker/Cargo.toml
@@ -14,6 +14,9 @@ libc = "0.2.139"
 rayon = "1.5.1"
 tikv-jemalloc-ctl = { version = "0.5.0", optional = true }
 tokio = { version = "1.24.2", features = ["fs", "process"] }
+os_pipe = "1.1.4"
+nix = { version = "0.27.1", features = ["resource", "process"]}
+bytes = { version = "1.1.0", default-features = false }
 
 parity-scale-codec = { version = "3.6.1", default-features = false, features = ["derive"] }