CI: tell where if the release builds fail

ci/RELEASE.sh

@@ -54,7 +54,7 @@ if test "x$BUILD_CLANG" = "xtrue" ; then
         rm -rf "$BUILDDIR"
         mkdir "$BUILDDIR" || { echo "Could not create build directory." ; exit 1 ; }
         ( cd "$BUILDDIR" && CC=clang CXX=clang++ cmake .. && make -j4 ) || { echo "Could not perform test-build in $BUILDDIR." ; exit 1 ; }
-        ( cd "$BUILDDIR" && make test ) || { echo "Tests failed in $BUILDDIR." ; exit 1 ; }
+        ( cd "$BUILDDIR" && make test ) || { echo "Tests failed in $BUILDDIR (clang)." ; exit 1 ; }
     fi
 fi
 
@@ -93,7 +93,7 @@ TMPDIR=$(mktemp -d --suffix="-calamares-$D")
 test -d "$TMPDIR" || { echo "Could not create tarball-build directory." ; exit 1 ; }
 tar xzf "$TAR_FILE" -C "$TMPDIR" || { echo "Could not unpack tarball." ; exit 1 ; }
 test -d "$TMPDIR/$TAR_V" || { echo "Tarball did not contain source directory." ; exit 1 ; }
-( cd "$TMPDIR/$TAR_V" && cmake . && make -j4 && make test ) || { echo "Tarball build failed." ; exit 1 ; }
+( cd "$TMPDIR/$TAR_V" && cmake . && make -j4 && make test ) || { echo "Tarball build failed in $TMPDIR." ; exit 1 ; }
 
 ### Cleanup
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