Cargo Features

[dependencies]
simple-log = { version = "2.1.1", default-features = false, features = ["log_inner", "target"] }
default = log_inner

The log_inner feature is set by default whenever simple-log is added without default-features = false somewhere in the dependency tree.

log_inner default = log4rs, once_cell
target = simple-log-derive

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.

log4rs log_inner
once_cell log_inner
simple-log-derive target?