Lint Groups

rustc has the concept of a "lint group", where you can toggle several warnings through one name.

For example, the nonstandard-style lint sets non-camel-case-types, non-snake-case, and non-upper-case-globals all at once. So these are equivalent:

$ rustc -D nonstandard-style
$ rustc -D non-camel-case-types -D non-snake-case -D non-upper-case-globals

Here's a list of each lint group, and the lints that they are made up of:

GroupDescriptionLints
warningsAll lints that are set to issue warningsSee warn-by-default for the default set of warnings
future-incompatibleLints that detect code that has future-compatibility problemsambiguous-associated-items, ambiguous-glob-imports, byte-slice-in-packed-struct-with-derive, cenum-impl-drop-cast, coherence-leak-check, conflicting-repr-hints, const-eval-mutable-ptr-in-final-value, const-evaluatable-unchecked, deprecated-cfg-attr-crate-type-name, deref-into-dyn-supertrait, elided-lifetimes-in-associated-constant, forbidden-lint-groups, ill-formed-attribute-input, invalid-type-param-default, late-bound-lifetime-arguments, legacy-derive-helpers, macro-expanded-macro-exports-accessed-by-absolute-paths, missing-fragment-specifier, never-type-fallback-flowing-into-unsafe, order-dependent-trait-objects, patterns-in-fns-without-body, proc-macro-back-compat, proc-macro-derive-resolution-fallback, pub-use-of-private-extern-crate, repr-transparent-external-private-fields, self-constructor-from-outer-item, semicolon-in-expressions-from-macros, soft-unstable, uncovered-param-in-projection, uninhabited-static, unstable-name-collisions, unstable-syntax-pre-expansion, unsupported-calling-conventions, wasm-c-abi, where-clauses-object-safety, writes-through-immutable-pointer
keyword-identsLints that detect identifiers which will be come keywords in later editionskeyword-idents-2018, keyword-idents-2024
let-underscoreLints that detect wildcard let bindings that are likely to be invalidlet-underscore-drop, let-underscore-lock
nonstandard-styleViolation of standard naming conventionsnon-camel-case-types, non-snake-case, non-upper-case-globals
refining-impl-traitDetects refinement of impl Trait return types by trait implementationsrefining-impl-trait-internal, refining-impl-trait-reachable
rust-2018-compatibilityLints used to transition code from the 2015 edition to 2018absolute-paths-not-starting-with-crate, anonymous-parameters, keyword-idents-2018, tyvar-behind-raw-pointer
rust-2018-idiomsLints to nudge you toward idiomatic features of Rust 2018bare-trait-objects, elided-lifetimes-in-paths, ellipsis-inclusive-range-patterns, explicit-outlives-requirements, unused-extern-crates
rust-2021-compatibilityLints used to transition code from the 2018 edition to 2021array-into-iter, bare-trait-objects, ellipsis-inclusive-range-patterns, non-fmt-panics, rust-2021-incompatible-closure-captures, rust-2021-incompatible-or-patterns, rust-2021-prefixes-incompatible-syntax, rust-2021-prelude-collisions
rust-2024-compatibilityLints used to transition code from the 2021 edition to 2024boxed-slice-into-iter, keyword-idents-2024, static-mut-refs, unsafe-op-in-unsafe-fn
unusedLints that detect things being declared but not used, or excess syntaxdead-code, map-unit-fn, path-statements, redundant-semicolons, unreachable-code, unreachable-patterns, unused-allocation, unused-assignments, unused-attributes, unused-braces, unused-doc-comments, unused-extern-crates, unused-features, unused-imports, unused-labels, unused-macro-rules, unused-macros, unused-must-use, unused-mut, unused-parens, unused-unsafe, unused-variables

Additionally, there's a bad-style lint group that's a deprecated alias for nonstandard-style.

Finally, you can also see the table above by invoking rustc -W help. This will give you the exact values for the specific compiler you have installed.