3 - [What is rustc?](what-is-rustc.md)
4 - [Command-line arguments](command-line-arguments.md)
5 - [Lints](lints/index.md)
6 - [Lint levels](lints/levels.md)
7 - [Lint Groups](lints/groups.md)
8 - [Lint listing](lints/listing/index.md)
9 - [Allowed-by-default lints](lints/listing/allowed-by-default.md)
10 - [Warn-by-default lints](lints/listing/warn-by-default.md)
11 - [Deny-by-default lints](lints/listing/deny-by-default.md)
12 - [Codegen options](codegen-options/index.md)
13 - [Targets](targets/index.md)
14 - [Built-in Targets](targets/built-in.md)
15 - [Custom Targets](targets/custom.md)
16 - [Contributing to `rustc`](contributing.md)