From fececfa81a5b142c9325688783b78cbda9cf9054 Mon Sep 17 00:00:00 2001
From: eleanorjboyd <26030610+eleanorjboyd@users.noreply.github.com>
Date: Thu, 5 Feb 2026 10:18:50 -0800
Subject: [PATCH] fix: update tracing subscriber to write JSON output to stderr

---
 crates/pet/src/lib.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/crates/pet/src/lib.rs b/crates/pet/src/lib.rs
index ce5aa02e..3f87ccaa 100644
--- a/crates/pet/src/lib.rs
+++ b/crates/pet/src/lib.rs
@@ -47,7 +47,7 @@ pub fn initialize_tracing(verbose: bool) {
         if use_json {
             tracing_subscriber::registry()
                 .with(filter)
-                .with(fmt::layer().json())
+                .with(fmt::layer().json().with_writer(std::io::stderr))
                 .init();
         } else {
             tracing_subscriber::registry()
@@ -55,7 +55,8 @@ pub fn initialize_tracing(verbose: bool) {
                 .with(
                     fmt::layer()
                         .with_target(true)
-                        .with_timer(fmt::time::uptime()),
+                        .with_timer(fmt::time::uptime())
+                        .with_writer(std::io::stderr),
                 )
                 .init();
         }