Added
For failing tests, if nextest finds text matching patterns that indicate failure, such as "thread
panicked at", it now highlights those lines (if color is enabled).
Rust's libtest doesn't provide structured output for this, so nextest uses heuristics. These
heuristics will be tweaked over time; to see what nextest would highlight, run cargo nextest debug extract highlight, and provide either --stdout and --stderr, or --combined if stdout and
stderr are combined.