warning: variables can be used directly in the `format!` string
       --> build.rs:140:9
        |
    140 | /         eprintln!(
    141 | |             "Environment variable ${} is not set during execution of build script",
    142 | |             key,
    143 | |         );
        | |_________^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
        = note: `-W clippy::uninlined-format-args` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::uninlined_format_args)]`

With 1.61:

    error: package `indexmap v2.6.0` cannot be built because it requires
    rustc 1.63 or newer, while the currently active rustc version is 1.61.0

With 1.63:

    error: package `toml_datetime v0.6.8` cannot be built because it requires
    rustc 1.65 or newer, while the currently active rustc version is 1.63.0

With 1.65:

    error: package `trybuild v1.0.101` cannot be built because it requires
    rustc 1.70 or newer, while the currently active rustc version is 1.65.0
    Either upgrade to rustc 1.70 or newer, or use
    cargo update -p [email protected] --precise ver
    where `ver` is the latest version of `trybuild` supporting rustc 1.65.0