From 969fbcd6d491d072b95d97bab6ef12efffd5f2bd Mon Sep 17 00:00:00 2001
From: Vincent Ambo <mail@tazj.in>
Date: Fri, 12 May 2023 11:16:15 +0300
Subject: fix(tvix/eval): builtins.trace prints to stderr

Change-Id: Icf577396035474d6977e627058aba5805c61985e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8563
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
---
 tvix/eval/src/builtins/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tvix/eval/src/builtins/mod.rs')

diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs
index 464809b270e0..d774e8813814 100644
--- a/tvix/eval/src/builtins/mod.rs
+++ b/tvix/eval/src/builtins/mod.rs
@@ -901,7 +901,7 @@ mod pure_builtins {
     async fn builtin_trace(co: GenCo, message: Value, value: Value) -> Result<Value, ErrorKind> {
         // TODO(grfn): `trace` should be pluggable and capturable, probably via a method on
         // the VM
-        println!("trace: {} :: {}", message, message.type_of());
+        eprintln!("trace: {} :: {}", message, message.type_of());
         Ok(value)
     }
 
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