[test] Print shaping output on CI fails (#695)

.circleci/config.yml

@@ -46,7 +46,7 @@ jobs:
       - run: apt update && apt install -y pkg-config ragel gtk-doc-tools libfreetype6-dev libglib2.0-dev libcairo2-dev libicu-dev libgraphite2-dev
       - run: cmake -DHB_HAVE_FREETYPE=ON -DHB_HAVE_GRAPHITE2=ON -DHB_BUILTIN_UCDN=ON -DHB_HAVE_GLIB=ON -DHB_HAVE_ICU=ON -DHB_BUILD_UTILS=ON -Bbuild -H. -GNinja
       - run: ninja -Cbuild
-      - run: ninja -Cbuild test
+      - run: CTEST_OUTPUT_ON_FAILURE=1 ninja -Cbuild test
       - run: ninja -Cbuild install
 
   cmake-oracledeveloperstudio:
@@ -58,7 +58,7 @@ jobs:
       - run: wget http://$ODSUSER:$ODSPASS@behdad.org/harfbuzz-private/OracleDeveloperStudio12.6-linux-x86-bin.tar.bz2 && tar xf OracleDeveloperStudio12.6-linux-x86-bin.tar.bz2 --owner root --group root --no-same-owner
       - run: CC=/root/project/OracleDeveloperStudio12.6-linux-x86-bin/developerstudio12.6/bin/suncc CXX=/root/project/OracleDeveloperStudio12.6-linux-x86-bin/developerstudio12.6/bin/sunCC cmake -DHB_HAVE_GRAPHITE2=ON -DHB_BUILTIN_UCDN=ON -DHB_HAVE_GLIB=ON -DHB_HAVE_ICU=ON -DHB_HAVE_FREETYPE=ON -Bbuild -H.
       - run: make -Cbuild
-      - run: make -Cbuild test
+      - run: CTEST_OUTPUT_ON_FAILURE=1 make -Cbuild test
       - run: make -Cbuild install
 
   crosscompile-notest-djgpp:

test/shaping/run-tests.py

@@ -61,7 +61,7 @@ for filename in args:
 			unicodes] + (options.split (' ') if options else []))
 
 		if returncode:
-			print ("hb-shape --font-funcs=ft failed.", file=sys.stderr)
+			print ("hb-shape --font-funcs=ft failed.")
 			fails = fails + 1
 			#continue
 
@@ -70,13 +70,13 @@ for filename in args:
 			unicodes] + (options.split (' ') if options else []))
 
 		if returncode:
-			print ("ERROR: hb-shape --font-funcs=ot failed.", file=sys.stderr)
+			print ("ERROR: hb-shape --font-funcs=ot failed.")
 			fails = fails + 1
 			#continue
 
 		if glyphs1 != glyphs2:
-			print ("FT funcs: " + glyphs1, file=sys.stderr)
-			print ("OT funcs: " + glyphs2, file=sys.stderr)
+			print ("FT funcs: " + glyphs1)
+			print ("OT funcs: " + glyphs2)
 			fails = fails + 1
 
 		if reference: