  Rust is a systems programming language that guarantees memory safety without
the need for a garbage collector by statically tracking ownership and borrowing
events. The associated rules are subtle and unique among industry programming
languages, which can make learning Rust more challenging. Motivated by the
challenges that Rust learners face, we are developing RustViz, a tool that
allows teachers to generate an interactive timeline depicting ownership and
borrowing events for each variable in a Rust code example. These visualizations
are intended to help Rust learners develop an understanding of ownership and
borrowing by example. This paper introduces RustViz by example, shows how
teachers can use it to generate visualizations, describes learning goals, and
proposes a study designed to evaluate RustViz based on these learning goals.
