Fetch information about the specified package. The spec can be a package ID, see cargo-pkgid(1) for the SPEC format. If the specified package is part of the current workspace, information from the local Cargo.toml file will be displayed. If the Cargo.lock file does not exist, it will be created. If no version is specified, the appropriate version will be selected based on the Minimum Supported Rust Version (MSRV).

The URL of the registry index to use.

Name of the registry to use. Registry names are defined in Cargo config files https://doc.rust-lang.org/cargo/reference/config.html. If not specified, the default registry is used, which is defined by the registry.default config key which defaults to crates-io.

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. May also be specified with the term.quiet config value https://doc.rust-lang.org/cargo/reference/config.html.

Control when colored output is used. Valid values:

May also be specified with the term.color config value https://doc.rust-lang.org/cargo/reference/config.html.

Asserts that the exact same dependencies and versions are used as when the existing Cargo.lock file was originally generated. Cargo will exit with an error when either of the following scenarios arises:

It may be used in environments where deterministic builds are desired, such as in CI pipelines.

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.

Equivalent to specifying both --locked and --offline.

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.

Overrides a Cargo configuration value. The argument should be in TOML syntax of KEY=VALUE, or provided as a path to an extra configuration file. This flag may be specified multiple times. See the command-line overrides section https://doc.rust-lang.org/cargo/reference/config.html#command-line-overrides for more information.

Changes the current working directory before executing any specified operations. This affects things like where cargo looks by default for the project manifest (Cargo.toml), as well as the directories searched for discovering .cargo/config.toml, for example. This option must appear before the command name, for example cargo -C path/to/my-project build.

This option is only available on the nightly channel https://doc.rust-lang.org/book/appendix-07-nightly-rust.html and requires the -Z unstable-options flag to enable (see #10098 https://github.com/rust-lang/cargo/issues/10098).

Prints help information.

Unstable (nightly-only) flags to Cargo. Run cargo -Z help for details.