Cargo Features

color-backtrace has no features set by default.

[dependencies]
color-backtrace = { version = "0.6.1", features = ["resolve-modules", "gimli-symbolize"] }
resolve-modules = regex
gimli-symbolize

Deprecated, no longer has any effect: backtrace crate removed corresponding option.

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

regex resolve-modules?