Build and view Rust package documentation offline.
cargo doc [options]
Build the documentation for the local package and all dependencies. The output is placed in target/doc in rustdoc's usual format.
Open the docs in a browser after building them. This will use your default browser unless you define another one in the BROWSER environment variable or use the doc.browser <https://doc.rust-lang.org/cargo/reference/config.html#docbrowser> configuration option.
Do not build documentation for dependencies.
Include non-public items in the documentation. This will be enabled by default if documenting a binary target.
By default, when no package selection options are given, the packages selected depend on the selected manifest file (based on the current working directory if --manifest-path is not given). If the manifest is the root of a workspace then the workspaces default members are selected, otherwise only the package defined by the manifest will be selected.
The default members of a workspace can be set explicitly with the workspace.default-members key in the root manifest. If this is not set, a virtual workspace will include all workspace members (equivalent to passing --workspace), and a non-virtual workspace will include only the root crate itself.
-p spec..., --package spec...
Document only the specified packages. See cargo-pkgid(1) for the SPEC format. This flag may be specified multiple times and supports common Unix glob patterns like *, ? and . However, to avoid your shell accidentally expanding glob patterns before Cargo handles them, you must use single quotes or double quotes around each pattern.
Document all members in the workspace.
Deprecated alias for --workspace.
Exclude the specified packages. Must be used in conjunction with the --workspace flag. This flag may be specified multiple times and supports common Unix glob patterns like *, ? and . However, to avoid your shell accidentally expanding glob patterns before Cargo handles them, you must use single quotes or double quotes around each pattern.
When no target selection options are given, cargo doc will document all binary and library targets of the selected package. The binary will be skipped if its name is the same as the lib target. Binaries are skipped if they have required-features that are missing.
The default behavior can be changed by setting doc = false for the target in the manifest settings. Using target selection options will ignore the doc flag and will always document the given target.
Document the package's library.
Document the specified binary. This flag may be specified multiple times and supports common Unix glob patterns.
Document all binary targets.
Document the specified example. This flag may be specified multiple times and supports common Unix glob patterns.
Document all example targets.
The feature flags allow you to control which features are enabled. When no feature options are given, the default feature is activated for every selected package.
See the features documentation <https://doc.rust-lang.org/cargo/reference/features.html#command-line-feature-options> for more details.
Space or comma separated list of features to activate. Features of workspace members may be enabled with package-name/feature-name syntax. This flag may be specified multiple times, which enables all specified features.
Activate all available features of all selected packages.
Do not activate the default feature of the selected packages.
Document for the given architecture. The default is the host architecture. The general format of the triple is <arch><sub>-<vendor>-<sys>-<abi>. Run rustc --print target-list for a list of supported targets.
This may also be specified with the build.target config value <https://doc.rust-lang.org/cargo/reference/config.html>.
Note that specifying this flag makes Cargo run in a different mode where the target artifacts are placed in a separate directory. See the build cache <https://doc.rust-lang.org/cargo/guide/build-cache.html> documentation for more details.
Document optimized artifacts with the release profile. See also the --profile option for choosing a specific profile by name.
Document with the given profile. See the the reference <https://doc.rust-lang.org/cargo/reference/profiles.html> for more details on profiles.
Document the target even if the selected Rust compiler is older than the required Rust version as configured in the project's rust-version field.
Directory for all generated artifacts and intermediate files. May also be specified with the CARGO_TARGET_DIR environment variable, or the build.target-dir config value <https://doc.rust-lang.org/cargo/reference/config.html>. Defaults to target in the root of the workspace.
Use verbose output. May be specified twice for "very verbose" output which includes extra output such as dependency warnings and build script output. May also be specified with the term.verbose config value <https://doc.rust-lang.org/cargo/reference/config.html>.
Do not print cargo log messages.
Control when colored output is used. Valid values:
·auto (default): Automatically detect if color support is available on the terminal.
·always: Always display colors.
·never: Never display colors.
May also be specified with the term.color config value <https://doc.rust-lang.org/cargo/reference/config.html>.
The output format for diagnostic messages. Can be specified multiple times and consists of comma-separated values. Valid values:
·human (default): Display in a human-readable text format. Conflicts with short and json.
·short: Emit shorter, human-readable text messages. Conflicts with human and json.
·json: Emit JSON messages to stdout. See the reference <https://doc.rust-lang.org/cargo/reference/external-tools.html#json-messages> for more details. Conflicts with human and short.
·json-diagnostic-short: Ensure the rendered field of JSON messages contains the "short" rendering from rustc. Cannot be used with human or short.
·json-diagnostic-rendered-ansi: Ensure the rendered field of JSON messages contains embedded ANSI color codes for respecting rustc's default color scheme. Cannot be used with human or short.
·json-render-diagnostics: Instruct Cargo to not include rustc diagnostics in in JSON messages printed, but instead Cargo itself should render the JSON diagnostics coming from rustc. Cargo's own JSON diagnostics and others coming from rustc are still emitted. Cannot be used with human or short.
Path to the Cargo.toml file. By default, Cargo searches for the Cargo.toml file in the current directory or any parent directory.
Either of these flags requires that the Cargo.lock file is up-to-date. If the lock file is missing, or it needs to be updated, Cargo will exit with an error. The --frozen flag also prevents Cargo from attempting to access the network to determine if it is out-of-date.
These may be used in environments where you want to assert that the Cargo.lock file is up-to-date (such as a CI build) or want to avoid network access.
Prevents Cargo from accessing the network for any reason. Without this flag, Cargo will stop with an error if it needs to access the network and the network is not available. With this flag, Cargo will attempt to proceed without the network if possible.
Beware that this may result in different dependency resolution than online mode. Cargo will restrict itself to crates that are downloaded locally, even if there might be a newer version as indicated in the local copy of the index. See the cargo-fetch(1) command to download dependencies before going offline.
May also be specified with the net.offline config value <https://doc.rust-lang.org/cargo/reference/config.html>.
If Cargo has been installed with rustup, and the first argument to cargo begins with +, it will be interpreted as a rustup toolchain name (such as +stable or +nightly). See the rustup documentation <https://rust-lang.github.io/rustup/overrides.html> for more information about how toolchain overrides work.
Prints help information.
Unstable (nightly-only) flags to Cargo. Run cargo -Z help for details.
-j N, --jobs N
Number of parallel jobs to run. May also be specified with the build.jobs config value <https://doc.rust-lang.org/cargo/reference/config.html>. Defaults to the number of CPUs.
See the reference <https://doc.rust-lang.org/cargo/reference/environment-variables.html> for details on environment variables that Cargo reads.
·0: Cargo succeeded.
·101: Cargo failed to complete.
1.Build the local package documentation and its dependencies and output to target/doc.
cargo(1), cargo-rustdoc(1), rustdoc(1)