From 37629f6afd54c08180889d71777824c7e48642d3 Mon Sep 17 00:00:00 2001
From: N <n@push0.dev>
Date: Wed, 20 Nov 2024 11:47:03 -0800
Subject: [PATCH] chore: stderr rng warning (#1798)

---
 crates/sdk/src/lib.rs                      | 2 +-
 crates/zkvm/entrypoint/src/syscalls/sys.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/sdk/src/lib.rs b/crates/sdk/src/lib.rs
index 6ea715daf7..3c40bcb9d6 100644
--- a/crates/sdk/src/lib.rs
+++ b/crates/sdk/src/lib.rs
@@ -77,7 +77,7 @@ impl ProverClient {
             "mock" => Self { prover: Box::new(MockProver::new()) },
             "local" => {
                 #[cfg(debug_assertions)]
-                println!("Warning: Local prover in dev mode is not recommended. Proof generation may be slow.");
+                eprintln!("Warning: Local prover in dev mode is not recommended. Proof generation may be slow.");
                 Self {
                     #[cfg(not(feature = "cuda"))]
                     prover: Box::new(CpuProver::new()),
diff --git a/crates/zkvm/entrypoint/src/syscalls/sys.rs b/crates/zkvm/entrypoint/src/syscalls/sys.rs
index 520d58ef90..48bd40713a 100644
--- a/crates/zkvm/entrypoint/src/syscalls/sys.rs
+++ b/crates/zkvm/entrypoint/src/syscalls/sys.rs
@@ -26,7 +26,7 @@ static SYS_RAND_WARNING: std::sync::Once = std::sync::Once::new();
 #[no_mangle]
 pub unsafe extern "C" fn sys_rand(recv_buf: *mut u8, words: usize) {
     SYS_RAND_WARNING.call_once(|| {
-        println!("WARNING: Using insecure random number generator.");
+        eprintln!("WARNING: Using insecure random number generator.");
     });
     let mut rng = RNG.lock().unwrap();
     for i in 0..words {