cargo run

NAME

cargo-run - Run the current package

SYNOPSIS

cargo run [OPTIONS] [— ARGS]

DESCRIPTION

Run a binary or example of the local package.

All the arguments following the two dashes (—) are passed to the binary torun. If you’re passing arguments to both Cargo and the binary, the ones after— go to the binary, the ones before go to Cargo.

OPTIONS

Package Selection

By default, the package in the current working directory is selected. The -pflag can be used to choose a different package in a workspace.

• -pSPEC
• —packageSPEC
• The package to run. See cargo-pkgid(1) forthe SPEC format.

Target Selection

When no target selection options are given, cargo run will run the binarytarget. If there are multiple binary targets, you must pass a target flag tochoose one. Or, the default-run field may be specified in the [package]section of Cargo.toml to choose the name of the binary to run by default.

• —binNAME

• Run the specified binary.

• —exampleNAME

• Run the specified example.

Feature Selection

When no feature options are given, the default feature is activated forevery selected package.

• —featuresFEATURES

• Space or comma separated list of features to activate. These features onlyapply to the current directory’s package. Features of direct dependenciesmay be enabled with <dep-name>/<feature-name> syntax.

• —all-features

• Activate all available features of all selected packages.

• —no-default-features

• Do not activate the default feature of the current directory’spackage.

Compilation Options

• —targetTRIPLE
• Run for the given architecture. The default is the hostarchitecture. The general format of the triple is<arch><sub>-<vendor>-<sys>-<abi>. Run rustc —print target-list for alist of supported targets.

This may also be specified with the build.targetconfig value.

• —release
• Run optimized artifacts with the release profile. See thePROFILES section for details on how this affects profile selection.

Output Options

• —target-dirDIRECTORY
• Directory for all generated artifacts and intermediate files. May also bespecified with the CARGO_TARGET_DIR environment variable, or thebuild.target-dir config value. Defaultsto target in the root of the workspace.

Display Options

• -v
• —verbose

• Use verbose output. May be specified twice for "very verbose" output whichincludes extra output such as dependency warnings and build script output.May also be specified with the term.verboseconfig value.

• -q

• —quiet

• No output printed to stdout.

• —colorWHEN

• Control when colored output is used. Valid values:

• auto (default): Automatically detect if color support is available on theterminal.

• always: Always display colors.

• never: Never display colors.

May also be specified with the term.colorconfig value.

• —message-formatFMT
• The output format for diagnostic messages. Can be specified multiple timesand consists of comma-separated values. Valid values:

• human (default): Display in a human-readable text format.

• short: Emit shorter, human-readable text messages.

• json: Emit JSON messages to stdout.

• json-diagnostic-short: Ensure the rendered field of JSON messages containsthe "short" rendering from rustc.

• json-diagnostic-rendered-ansi: Ensure the rendered field of JSON messagescontains embedded ANSI color codes for respecting rustc’s default colorscheme.

• json-render-diagnostics: Instruct Cargo to not include rustc diagnostics inin JSON messages printed, but instead Cargo itself should render theJSON diagnostics coming from rustc. Cargo’s own JSON diagnostics and otherscoming from rustc are still emitted.

Manifest Options

• —manifest-pathPATH

• Path to the Cargo.toml file. By default, Cargo searches in the currentdirectory or any parent directory for the Cargo.toml file.

• —frozen

• —locked
• Either of these flags requires that the Cargo.lock file isup-to-date. If the lock file is missing, or it needs to be updated, Cargo willexit with an error. The —frozen flag also prevents Cargo fromattempting to access the network to determine if it is out-of-date.

These may be used in environments where you want to assert that theCargo.lock file is up-to-date (such as a CI build) or want to avoid networkaccess.

• —offline
• Prevents Cargo from accessing the network for any reason. Without thisflag, Cargo will stop with an error if it needs to access the network andthe network is not available. With this flag, Cargo will attempt toproceed without the network if possible.

Beware that this may result in different dependency resolution than onlinemode. Cargo will restrict itself to crates that are downloaded locally, evenif 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 goingoffline.

May also be specified with the net.offline config value.

Common Options

• -h
• —help

• Prints help information.

• -ZFLAG…​

• Unstable (nightly-only) flags to Cargo. Run cargo -Z help fordetails.

Miscellaneous Options

• -jN
• —jobsN
• Number of parallel jobs to run. May also be specified with thebuild.jobs config value. Defaults tothe number of CPUs.

PROFILES

Profiles may be used to configure compiler options such as optimization levelsand debug settings. Seethe referencefor more details.

Profile selection depends on the target and crate being built. By default thedev or test profiles are used. If the —release flag is given, then therelease or bench profiles are used.

Dependencies use the dev/release profiles.

ENVIRONMENT

See the reference fordetails on environment variables that Cargo reads.

Exit Status

• 0

• Cargo succeeded.

• 101

• Cargo failed to complete.

EXAMPLES

• Build the local package and run its main target (assuming only one binary):

cargo run

• Run an example with extra arguments:

cargo run --example exname -- --exoption exarg1 exarg2

SEE ALSO

cargo(1), cargo-build(1)