Get the fuzzing coverage results

[sylvestre]

An ugly script to do that:

FUZZER=fuzz_parse_glob
DURATION=60
cd fuzz
cargo +nightly fuzz run $FUZZER -- -max_total_time=$DURATION -detect_leaks=0
cargo +nightly fuzz coverage $FUZZER -- -max_total_time=$DURATION -detect_leaks=0
cd ..
grcov . -s . --binary-path fuzz/target fuzz/coverage/$FUZZER -t html -o cov-$FUZZER
firefox cov-$FUZZER/index.html

Needs:

cargo install grcov
rustup component add llvm-tools-preview