Cargo Features

[dependencies]
unwrap_or_panic = { version = "0.3.0", default-features = false, features = ["track_caller", "never_inline", "panic_location"] }
default = track_caller

The track_caller feature is set by default whenever unwrap_or_panic is added without default-features = false somewhere in the dependency tree.

track_caller default
never_inline
panic_location

UnwrapOrPanic has 4 features without comments.