Prevented harmless or expected failiures to result in failed test run.

.travis.yml

@@ -13,10 +13,11 @@ before_script:
   - cd build
 
 script:
-  - ../configure CFLAGS="--coverage -ftest-coverage -fprofile-arcs" LDFLAGS=-lgcov --enable-debug && build-wrapper-linux-x86-64 --out-dir bw-output make all
+  - ../configure CFLAGS="--coverage -ftest-coverage -fprofile-arcs" LDFLAGS=-lgcov --enable-debug
+  - build-wrapper-linux-x86-64 --out-dir bw-output make all || true  # Will always fail builds on forked repositories.
   - make -k check VERBOSE=true || { test "$SEND_COVERAGE_EVEN_IF_TESTS_FAIL" = yes && curl -s https://codecov.io/bash > cov.sh && bash cov.sh -x "$GCOV"; }
-  - bash ../tests/recursively_generate_gcov.sh .
-  - cd .. && sonar-scanner
+  - bash ../tests/recursively_generate_gcov.sh . || true  # Failures that occur here are harmless
+  - cd .. && sonar-scanner || true  # Will always fail builds on forked repositories.
 
 after_success:
  - curl -s https://codecov.io/bash > cov.sh && bash cov.sh -x "$GCOV"