diff --git a/tests/core/build.bat b/tests/core/build.bat
index 7871e52e2..4755e0a44 100644
--- a/tests/core/build.bat
+++ b/tests/core/build.bat
@@ -25,7 +25,7 @@ rem %PATH_TO_ODIN% run encoding/hxa    %COMMON% %COLLECTION% -out:test_hxa.exe |
 %PATH_TO_ODIN% run encoding/json   %COMMON% -out:test_json.exe || exit /b
 %PATH_TO_ODIN% run encoding/varint %COMMON% -out:test_varint.exe || exit /b
 %PATH_TO_ODIN% run encoding/xml    %COMMON% -out:test_xml.exe || exit /b
-%PATH_TO_ODIN% test encoding/cbor  %COMMON% -out:test_cbor.exe || exit /b
+%PATH_TO_ODIN% test encoding/cbor  %COMMON% -out:test_cbor.exe -define:test_threads=1 -define:test_fancy=false || exit /b
 %PATH_TO_ODIN% run encoding/hex    %COMMON% -out:test_hex.exe || exit /b
 %PATH_TO_ODIN% run encoding/base64 %COMMON% -out:test_base64.exe || exit /b
 
diff --git a/tests/core/compress/test_core_compress.odin b/tests/core/compress/test_core_compress.odin
index ac7555e9a..db6f3d06b 100644
--- a/tests/core/compress/test_core_compress.odin
+++ b/tests/core/compress/test_core_compress.odin
@@ -21,7 +21,7 @@ import "core:fmt"
 
 import "core:mem"
 import "core:os"
-import "core:io"
+// import "core:io"
 
 TEST_count := 0
 TEST_fail  := 0
@@ -45,8 +45,8 @@ when ODIN_TEST {
 }
 
 main :: proc() {
-	w := io.to_writer(os.stream_from_handle(os.stdout))
-	t := testing.T{w=w}
+	// w := io.to_writer(os.stream_from_handle(os.stdout))
+	t := testing.T{}//{w=w}
 	zlib_test(&t)
 	gzip_test(&t)
 	shoco_test(&t)
@@ -195,4 +195,4 @@ shoco_test :: proc(t: ^testing.T) {
 		size, err = shoco.decompress(v.compressed[:v.short_sentinel], buffer[:])
 		expect(t, err == .Stream_Too_Short, "Expected `decompress` to return `Stream_Too_Short` because there was no more data after non-ASCII sentinel.")
 	}
-}
\ No newline at end of file
+}
diff --git a/tests/core/text/match/test_core_text_match.odin b/tests/core/text/match/test_core_text_match.odin
index b72190f78..eadd17433 100644
--- a/tests/core/text/match/test_core_text_match.odin
+++ b/tests/core/text/match/test_core_text_match.odin
@@ -14,7 +14,7 @@ failed :: proc(t: ^testing.T, ok: bool, loc := #caller_location) -> bool {
 	TEST_count += 1
 	
 	if !ok {
-		fmt.wprintf(t.w, "%v: ", loc)
+		fmt.printf(/*t.w,*/ "%v: ", loc)
 		t.error_count += 1	
 		TEST_fail += 1
 	}
@@ -25,7 +25,7 @@ failed :: proc(t: ^testing.T, ok: bool, loc := #caller_location) -> bool {
 expect :: testing.expect
 
 logf :: proc(t: ^testing.T, format: string, args: ..any) {
-	fmt.wprintf(t.w, format, ..args)
+	fmt.printf(/*t.w,*/ format, ..args)
 }
 
 // find correct byte offsets 
@@ -380,7 +380,7 @@ main :: proc() {
 	t: testing.T
 	stream := os.stream_from_handle(os.stdout)
 	w := io.to_writer(stream)
-	t.w = w
+	// t.w = w
 	
 	test_find(&t)
 	test_match(&t)
@@ -396,4 +396,4 @@ main :: proc() {
 	if TEST_fail > 0 {
 		os.exit(1)
 	}
-}
\ No newline at end of file
+}