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cargo-update(1)                                                cargo-update(1)




NAME

       cargo-update - Update dependencies as recorded in the local lock file


SYNOPSIS

       cargo update [OPTIONS]


DESCRIPTION

       This command will update dependencies in the Cargo.lock file to the
       latest version. It requires that the Cargo.lock file already exists as
       generated by commands such as cargo-build(1) or
       cargo-generate-lockfile(1).


OPTIONS

   Update Options
       -p SPEC..., --package SPEC...
           Update only the specified packages. This flag may be specified
           multiple times. See cargo-pkgid(1) for the SPEC format.

           If packages are specified with the -p flag, then a conservative
           update of the lockfile will be performed. This means that only the
           dependency specified by SPEC will be updated. Its transitive
           dependencies will be updated only if SPEC cannot be updated without
           updating dependencies. All other dependencies will remain locked at
           their currently recorded versions.

           If -p is not specified, all dependencies are updated.

       --aggressive
           When used with -p, dependencies of SPEC are forced to update as
           well. Cannot be used with --precise.

       --precise PRECISE
           When used with -p, allows you to specify a specific version number
           to set the package to. If the package comes from a git repository,
           this can be a git revision (such as a SHA hash or tag).

       --dry-run
           Displays what would be updated, but doesn't actually write the
           lockfile.

   Display Options
       -v, --verbose
           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>.

       -q, --quiet
           No output printed to stdout.

       --color WHEN
           Control when colored output is used. Valid values:

           o   auto (default): Automatically detect if color support is
               available on the terminal.

           o   always: Always display colors.

           o   never: Never display colors.

           May also be specified with the term.color

           config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

   Manifest Options
       --manifest-path PATH
           Path to the Cargo.toml file. By default, Cargo searches for the
           Cargo.toml file in the current directory or any parent directory.

       --frozen, --locked
           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.

       --offline
           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>.

   Common Options
       +TOOLCHAIN
           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://github.com/rust-lang/rustup/> for more information about
           how toolchain overrides work.

       -h, --help
           Prints help information.

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


ENVIRONMENT

       See  the reference
       <https://doc.rust-lang.org/cargo/reference/environment-variables.html>
       for details on environment variables that Cargo reads.


EXIT STATUS

       0
           Cargo succeeded.

       101
           Cargo failed to complete.


EXAMPLES

        1. Update all dependencies in the lockfile:

               cargo update

        2. Update only specific dependencies:

               cargo update -p foo -p bar

        3. Set a specific dependency to a specific version:

               cargo update -p foo --precise 1.2.3


SEE ALSO

       cargo(1), cargo-generate-lockfile(1)



                                  2019-09-05                   cargo-update(1)

cargo 0.47.0 - Generated Thu Oct 15 16:21:30 CDT 2020
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