This tool is used to inspect and parse the Bazel execution logs. To generate the execution log, run e.g.:
bazel build \ --experimental_execution_log_file=/tmp/exec.log :hello_world
Then build the parser and run it.
bazel build src/tools/execlog:all bazel-bin/src/tools/execlog/parser --log_path=/tmp/exec.log
This will simply print the log contents to stdout in text form.