Cargo Features

panic-custom has no features set by default.

[dependencies]
panic-custom = { version = "0.1.1", features = ["proc_macros", "abort_on_debug", "abort_on_release"] }
proc_macros = panic-custom-proc-macros
abort_on_debug
abort_on_release

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.

panic-custom-proc-macros proc_macros?