Replace run.sh with a faster, filterable, DRYer python replacement

bin/runtests.sh

@@ -41,7 +41,7 @@ run_system_tests() {
   echo "running the system test suite"
   # Change to SYSTEM_TEST_DIR directory
   cd "${SYSTEM_TEST_DIR}" || exit 1
-  if ! ./run.sh; then
+  if ! python3 run_system_tests.py; then
     echo "error while running system tests"
     exit 1
   fi

src/tipc.cpp

@@ -143,6 +143,7 @@ int main(int argc, char *argv[]) {
         if (!astStream.good()) {
           LOG_S(ERROR) << "tipc: error: failed to open '" << astFile
                        << "' for writing";
+          std::exit(EXIT_FAILURE);
         } else {
           FrontEnd::astVisualize(ast, astStream);
         }

test/system/run.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+
+# Deprecated: use run_system_tests.py instead
 declare -r ROOT_DIR=${TRAVIS_BUILD_DIR:-$(git rev-parse --show-toplevel)}
 declare -r TIPC=${ROOT_DIR}/build/src/tipc
 declare -r RTLIB=${ROOT_DIR}/rtlib