diff --git a/src/main.cpp b/src/main.cpp
index ad07c9a12..d7fb66f99 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1996,39 +1996,39 @@ gb_internal void show_timings(Checker *c, Timings *t) {
 
 	if (build_context.show_debug_messages && build_context.show_more_timings) {
 		{
-			gb_printf("\n");
-			gb_printf("Total Lines     - %td\n", lines);
-			gb_printf("Total Tokens    - %td\n", tokens);
-			gb_printf("Total Files     - %td\n", files);
-			gb_printf("Total Packages  - %td\n", packages);
-			gb_printf("Total File Size - %td\n", total_file_size);
-			gb_printf("\n");
+			gb_printf_err("\n");
+			gb_printf_err("Total Lines     - %td\n", lines);
+			gb_printf_err("Total Tokens    - %td\n", tokens);
+			gb_printf_err("Total Files     - %td\n", files);
+			gb_printf_err("Total Packages  - %td\n", packages);
+			gb_printf_err("Total File Size - %td\n", total_file_size);
+			gb_printf_err("\n");
 		}
 		{
 			f64 time = total_tokenizing_time;
-			gb_printf("Tokenization Only\n");
-			gb_printf("LOC/s        - %.3f\n", cast(f64)lines/time);
-			gb_printf("us/LOC       - %.3f\n", 1.0e6*time/cast(f64)lines);
-			gb_printf("Tokens/s     - %.3f\n", cast(f64)tokens/time);
-			gb_printf("us/Token     - %.3f\n", 1.0e6*time/cast(f64)tokens);
-			gb_printf("bytes/s      - %.3f\n", cast(f64)total_file_size/time);
-			gb_printf("MiB/s        - %.3f\n", cast(f64)(total_file_size/time)/(1024*1024));
-			gb_printf("us/bytes     - %.3f\n", 1.0e6*time/cast(f64)total_file_size);
+			gb_printf_err("Tokenization Only\n");
+			gb_printf_err("LOC/s        - %.3f\n", cast(f64)lines/time);
+			gb_printf_err("us/LOC       - %.3f\n", 1.0e6*time/cast(f64)lines);
+			gb_printf_err("Tokens/s     - %.3f\n", cast(f64)tokens/time);
+			gb_printf_err("us/Token     - %.3f\n", 1.0e6*time/cast(f64)tokens);
+			gb_printf_err("bytes/s      - %.3f\n", cast(f64)total_file_size/time);
+			gb_printf_err("MiB/s        - %.3f\n", cast(f64)(total_file_size/time)/(1024*1024));
+			gb_printf_err("us/bytes     - %.3f\n", 1.0e6*time/cast(f64)total_file_size);
 
-			gb_printf("\n");
+			gb_printf_err("\n");
 		}
 		{
 			f64 time = total_parsing_time;
-			gb_printf("Parsing Only\n");
-			gb_printf("LOC/s        - %.3f\n", cast(f64)lines/time);
-			gb_printf("us/LOC       - %.3f\n", 1.0e6*time/cast(f64)lines);
-			gb_printf("Tokens/s     - %.3f\n", cast(f64)tokens/time);
-			gb_printf("us/Token     - %.3f\n", 1.0e6*time/cast(f64)tokens);
-			gb_printf("bytes/s      - %.3f\n", cast(f64)total_file_size/time);
-			gb_printf("MiB/s        - %.3f\n", cast(f64)(total_file_size/time)/(1024*1024));
-			gb_printf("us/bytes     - %.3f\n", 1.0e6*time/cast(f64)total_file_size);
+			gb_printf_err("Parsing Only\n");
+			gb_printf_err("LOC/s        - %.3f\n", cast(f64)lines/time);
+			gb_printf_err("us/LOC       - %.3f\n", 1.0e6*time/cast(f64)lines);
+			gb_printf_err("Tokens/s     - %.3f\n", cast(f64)tokens/time);
+			gb_printf_err("us/Token     - %.3f\n", 1.0e6*time/cast(f64)tokens);
+			gb_printf_err("bytes/s      - %.3f\n", cast(f64)total_file_size/time);
+			gb_printf_err("MiB/s        - %.3f\n", cast(f64)(total_file_size/time)/(1024*1024));
+			gb_printf_err("us/bytes     - %.3f\n", 1.0e6*time/cast(f64)total_file_size);
 
-			gb_printf("\n");
+			gb_printf_err("\n");
 		}
 		{
 			TimeStamp ts = {};
@@ -2041,16 +2041,16 @@ gb_internal void show_timings(Checker *c, Timings *t) {
 			GB_ASSERT(ts.label == "parse files");
 
 			f64 parse_time = time_stamp_as_s(ts, t->freq);
-			gb_printf("Parse pass\n");
-			gb_printf("LOC/s        - %.3f\n", cast(f64)lines/parse_time);
-			gb_printf("us/LOC       - %.3f\n", 1.0e6*parse_time/cast(f64)lines);
-			gb_printf("Tokens/s     - %.3f\n", cast(f64)tokens/parse_time);
-			gb_printf("us/Token     - %.3f\n", 1.0e6*parse_time/cast(f64)tokens);
-			gb_printf("bytes/s      - %.3f\n", cast(f64)total_file_size/parse_time);
-			gb_printf("MiB/s        - %.3f\n", cast(f64)(total_file_size/parse_time)/(1024*1024));
-			gb_printf("us/bytes     - %.3f\n", 1.0e6*parse_time/cast(f64)total_file_size);
+			gb_printf_err("Parse pass\n");
+			gb_printf_err("LOC/s        - %.3f\n", cast(f64)lines/parse_time);
+			gb_printf_err("us/LOC       - %.3f\n", 1.0e6*parse_time/cast(f64)lines);
+			gb_printf_err("Tokens/s     - %.3f\n", cast(f64)tokens/parse_time);
+			gb_printf_err("us/Token     - %.3f\n", 1.0e6*parse_time/cast(f64)tokens);
+			gb_printf_err("bytes/s      - %.3f\n", cast(f64)total_file_size/parse_time);
+			gb_printf_err("MiB/s        - %.3f\n", cast(f64)(total_file_size/parse_time)/(1024*1024));
+			gb_printf_err("us/bytes     - %.3f\n", 1.0e6*parse_time/cast(f64)total_file_size);
 
-			gb_printf("\n");
+			gb_printf_err("\n");
 		}
 		{
 			TimeStamp ts = {};
@@ -2071,27 +2071,27 @@ gb_internal void show_timings(Checker *c, Timings *t) {
 			ts.finish = ts_end.finish;
 
 			f64 parse_time = time_stamp_as_s(ts, t->freq);
-			gb_printf("Checker pass\n");
-			gb_printf("LOC/s        - %.3f\n", cast(f64)lines/parse_time);
-			gb_printf("us/LOC       - %.3f\n", 1.0e6*parse_time/cast(f64)lines);
-			gb_printf("Tokens/s     - %.3f\n", cast(f64)tokens/parse_time);
-			gb_printf("us/Token     - %.3f\n", 1.0e6*parse_time/cast(f64)tokens);
-			gb_printf("bytes/s      - %.3f\n", cast(f64)total_file_size/parse_time);
-			gb_printf("MiB/s        - %.3f\n", (cast(f64)total_file_size/parse_time)/(1024*1024));
-			gb_printf("us/bytes     - %.3f\n", 1.0e6*parse_time/cast(f64)total_file_size);
-			gb_printf("\n");
+			gb_printf_err("Checker pass\n");
+			gb_printf_err("LOC/s        - %.3f\n", cast(f64)lines/parse_time);
+			gb_printf_err("us/LOC       - %.3f\n", 1.0e6*parse_time/cast(f64)lines);
+			gb_printf_err("Tokens/s     - %.3f\n", cast(f64)tokens/parse_time);
+			gb_printf_err("us/Token     - %.3f\n", 1.0e6*parse_time/cast(f64)tokens);
+			gb_printf_err("bytes/s      - %.3f\n", cast(f64)total_file_size/parse_time);
+			gb_printf_err("MiB/s        - %.3f\n", (cast(f64)total_file_size/parse_time)/(1024*1024));
+			gb_printf_err("us/bytes     - %.3f\n", 1.0e6*parse_time/cast(f64)total_file_size);
+			gb_printf_err("\n");
 		}
 		{
 			f64 total_time = t->total_time_seconds;
-			gb_printf("Total pass\n");
-			gb_printf("LOC/s        - %.3f\n", cast(f64)lines/total_time);
-			gb_printf("us/LOC       - %.3f\n", 1.0e6*total_time/cast(f64)lines);
-			gb_printf("Tokens/s     - %.3f\n", cast(f64)tokens/total_time);
-			gb_printf("us/Token     - %.3f\n", 1.0e6*total_time/cast(f64)tokens);
-			gb_printf("bytes/s      - %.3f\n", cast(f64)total_file_size/total_time);
-			gb_printf("MiB/s        - %.3f\n", cast(f64)(total_file_size/total_time)/(1024*1024));
-			gb_printf("us/bytes     - %.3f\n", 1.0e6*total_time/cast(f64)total_file_size);
-			gb_printf("\n");
+			gb_printf_err("Total pass\n");
+			gb_printf_err("LOC/s        - %.3f\n", cast(f64)lines/total_time);
+			gb_printf_err("us/LOC       - %.3f\n", 1.0e6*total_time/cast(f64)lines);
+			gb_printf_err("Tokens/s     - %.3f\n", cast(f64)tokens/total_time);
+			gb_printf_err("us/Token     - %.3f\n", 1.0e6*total_time/cast(f64)tokens);
+			gb_printf_err("bytes/s      - %.3f\n", cast(f64)total_file_size/total_time);
+			gb_printf_err("MiB/s        - %.3f\n", cast(f64)(total_file_size/total_time)/(1024*1024));
+			gb_printf_err("us/bytes     - %.3f\n", 1.0e6*total_time/cast(f64)total_file_size);
+			gb_printf_err("\n");
 		}
 	}
 }
diff --git a/src/timings.cpp b/src/timings.cpp
index 3f8402b36..f6e86867f 100644
--- a/src/timings.cpp
+++ b/src/timings.cpp
@@ -197,7 +197,7 @@ gb_internal void timings_print_all(Timings *t, TimingUnit unit = TimingUnit_Mill
 
 	f64 total_time = time_stamp(t->total, t->freq, unit);
 
-	gb_printf("%.*s%.*s - % 9.3f %s - %6.2f%%\n",
+	gb_printf_err("%.*s%.*s - % 9.3f %s - %6.2f%%\n",
 	          LIT(t->total.label),
 	          cast(int)(max_len-t->total.label.len), SPACES,
 	          total_time,
@@ -207,7 +207,7 @@ gb_internal void timings_print_all(Timings *t, TimingUnit unit = TimingUnit_Mill
 	for_array(i, t->sections) {
 		TimeStamp ts = t->sections[i];
 		f64 section_time = time_stamp(ts, t->freq, unit);
-		gb_printf("%.*s%.*s - % 9.3f %s - %6.2f%%\n",
+		gb_printf_err("%.*s%.*s - % 9.3f %s - %6.2f%%\n",
 		          LIT(ts.label),
 	              cast(int)(max_len-ts.label.len), SPACES,
 		          section_time,