Artifacts are downloadable external ressources. They provide their
ressource (vcs commit, extracted archive) using Artifact.provide.
GitArtifact download a bare git repository and provides specific
commits using worktrees.

Use GitArtifact for the linux kernel source

benchmark inspired by this blog post.
https://dev.to/sharkdp/an-unexpected-performance-regression-11ai

Blowup tests the described blowup problem of ptmalloc described in the
TCMalloc post.

benchmark.prepare should raise an Exception if it encounters an
unrecoverable, intolerable error.

There is no generic way to retrieve the version of a binary.
Not everyone followes GNU cli guidelines and supports "--version".
The larson benchmark for example reads input from stdin when
started with "larson --version" blocking the Benchmark.prepare() call.

redis is build using a bash script because I wasn't able to build
with make alone.
TODO: build redis using only a Makefile