ci: pass max_total_time to libFuzzer

Since clang was updated to 9.0.1 libFuzzer has been exiting with 72
when it's run with timeout. Let's pass -max_total_time to it instead.

docs/HACKING.md

@@ -127,7 +127,5 @@ guidance in [CONTRIBUTING.md](CONTRIBUTING.md) on how to report a security vulne
 
 For more details on building fuzzers and integrating with OSS-Fuzz, visit:
 
-- https://github.com/google/oss-fuzz/blob/master/docs/new_project_guide.md
+- [Setting up a new project - OSS-Fuzz](https://google.github.io/oss-fuzz/getting-started/new-project-guide/)
-- https://llvm.org/docs/LibFuzzer.html
+- [Tutorials - OSS-Fuzz](https://google.github.io/oss-fuzz/reference/useful-links/#tutorials)
-- https://github.com/google/fuzzer-test-suite/blob/master/tutorial/libFuzzerTutorial.md
-- https://chromium.googlesource.com/chromium/src/testing/libfuzzer/+/HEAD/efficient_fuzzer.md

travis-ci/managers/fuzzbuzz.sh

@@ -17,7 +17,7 @@ pip3 install meson
 cd $REPO_ROOT
 export PATH="$HOME/.local/bin/:$PATH"
 tools/oss-fuzz.sh
-timeout --preserve-status 5 ./out/fuzz-unit-file
+./out/fuzz-unit-file -max_total_time=5
 git clean -dxff
 
 wget https://app.fuzzbuzz.io/releases/cli/latest/linux/fuzzbuzz