Cargo Features

[dependencies]
test_eq = { version = "0.1.1", default-features = false, features = ["line-info"] }
default = line-info

The line-info feature is set by default whenever test_eq is added without default-features = false somewhere in the dependency tree.

line-info default

Provide the location in the source file where the error happened. This information is set at compile time and cannot be removed with debug=false or strip=true