Ubuntu Manpage: cargo-run — Run the current package

Provided by: cargo_1.75.0+dfsg0ubuntu1~bpo10-0ubuntu0.23.10_amd64

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 to run. If you’re
       passing arguments to both Cargo and the binary, the ones after -- go to the binary, the
       ones before go to Cargo.

       Unlike cargo-test(1) and cargo-bench(1), cargo run sets the working directory of the
       binary executed to the current working directory, same as if it was executed in the shell
       directly.

OPTIONS

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

-p spec, --package spec
The package to run. See cargo-pkgid(1) for the SPEC format.

Target Selection
When no target selection options are given, cargo run will run the binary target. If there
are multiple binary targets, you must pass a target flag to choose 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.

--bin name
Run the specified binary.

--example name
Run the specified example.

Feature Selection
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.

-F features, --features features
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.

--all-features
Activate all available features of all selected packages.

--no-default-features
Do not activate the default feature of the selected packages.

Compilation Options
--target triple
Run 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.

-r, --release
Run optimized artifacts with the release profile. See also the --profile option for
choosing a specific profile by name.

--profile name
Run with the given profile. See the reference
<https://doc.rust-lang.org/cargo/reference/profiles.html> for more details on
profiles.

--ignore-rust-version
Run the target even if the selected Rust compiler is older than the required Rust
version as configured in the project’s rust-version field.

--timings=fmts
Output information how long each compilation takes, and track concurrency information
over time. Accepts an optional comma-separated list of output formats; --timings
without an argument will default to --timings=html. Specifying an output format
(rather than the default) is unstable and requires -Zunstable-options. Valid output
formats:

• html (unstable, requires -Zunstable-options): Write a human-readable file
cargo-timing.html to the target/cargo-timings directory with a report of the
compilation. Also write a report to the same directory with a timestamp in the
filename if you want to look at older runs. HTML output is suitable for human
consumption only, and does not provide machine-readable timing data.

• json (unstable, requires -Zunstable-options): Emit machine-readable JSON
information about timing information.

Output Options
--target-dir directory
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.

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
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>.

--color when
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>.

--message-format fmt
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 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.

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://rust-lang.github.io/rustup/overrides.html> for
more information about how toolchain overrides work.

--config KEY=VALUE or PATH
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.

-C PATH
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>).

-h, --help
Prints help information.

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

Miscellaneous Options
-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
logical CPUs. If negative, it sets the maximum number of parallel jobs to the number
of logical CPUs plus provided value. If a string default is provided, it sets the
value back to defaults. Should not be 0.

--keep-going
Build as many crates in the dependency graph as possible, rather than aborting the
build on the first one that fails to build.

For example if the current package depends on dependencies fails and works, one of
which fails to build, cargo run -j1 may or may not build the one that succeeds
(depending on which one of the two builds Cargo picked to run first), whereas cargo
run -j1 --keep-going would definitely run both builds, even if the one run first
fails.

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

               cargo run

        2. Run an example with extra arguments:

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