Cargo Features

tracing-subscriber-init has no features set by default.

[dependencies]
tracing-subscriber-init = { version = "0.1.3", features = ["json", "tstime", "unstable"] }
json

Enables json of tracing-subscriber

Affects config::Config.with_current_span, config::Config.with_span_list

tstime = time

Enables time of tracing-subscriber

unstable

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.

time tstime?