9 - cargo build --verbose
10 - cargo build --verbose --features serde
11 - cargo build --verbose --features std
12 - cargo test --verbose
13 - cargo test --verbose --features serde
14 - cargo test --verbose --features std
15 - cargo run --verbose --manifest-path tests/max_level_features/Cargo.toml
16 - cargo run --verbose --manifest-path tests/max_level_features/Cargo.toml --release