Cargo Features

DBMigrator has no features set by default.

[dependencies]
dbmigrator = { version = "0.4.1", features = ["tokio-postgres", "serde"] }
tokio-postgres = tokio

Enables tokio-postgres

allow multiple versions of the same dependency if API is similar

and rt of tokio

tiberius = { version = ">= 0.7, <= 0.12", optional = true, default-features = false }

serde

Enables serde

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.

tokio tokio-postgres?