Cargo Features

[dependencies]
google-plus1 = { version = "6.0.0+20190616", default-features = false, features = ["utoipa", "yup-oauth2"] }
default = yup-oauth2

The yup-oauth2 feature is set by default whenever google-plus1 is added without default-features = false somewhere in the dependency tree.

utoipa

Enables utoipa ^4

yup-oauth2 default

Enables yup-oauth2, yup-oauth2 of google-apis-common

google-plus1 has 3 features without comments.