Cargo Features

Mockalloc has no features set by default.

[dependencies]
mockalloc = { version = "0.1.2", features = ["tracing"] }
tracing = backtrace

Affects mockalloc::tracing

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.

backtrace tracing?