修复CI构建失败

修复异常处理错误

ci/travis.sh

@@ -7,12 +7,12 @@ chmod +x ci/get-nprocessors.sh
 # if possible, ask for the precise number of processors,
 # otherwise take 2 processors as reasonable default; see
 # https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
-if [ -x /usr/bin/getconf ]; then
-    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
-else
-    NPROCESSORS=2
-fi
-
+#if [ -x /usr/bin/getconf ]; then
+#    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
+#else
+#    NPROCESSORS=2
+#fi
+NPROCESSORS=1
 # as of 2017-09-04 Travis CI reports 32 processors, but GCC build
 # crashes if parallelized too much (maybe memory consumption problem),
 # so limit to 4 processors for the time being.