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
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/reference/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
--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
-q, --quiet
--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-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.
--ignore-rust-version
Ignore rust-version specification in
packages.
--locked
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:
•The lock file is missing.
•Cargo attempted to change the lock file due to a
different dependency resolution.
It may be used in environments where deterministic builds are
desired, such as in CI pipelines.
--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>.
--frozen
Equivalent to specifying both --locked and
--offline.
--lockfile-path PATH
Changes the path of the lockfile from the default
(
<workspace_root>/Cargo.lock) to
PATH.
PATH must
end with
Cargo.lock (e.g.
--lockfile-path
/tmp/temporary-lockfile/Cargo.lock). Note that providing
--lockfile-path will ignore existing lockfile at the default path, and
instead will either use the lockfile from
PATH, or write a new lockfile
into the provided
PATH if it doesn’t exist. This flag can be
used to run most commands in read-only directories, writing lockfile into the
provided
PATH.
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 #14421
<https://github.com/rust-lang/cargo/issues/14421>).
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
-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.
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):
2.Run an example with extra arguments:
cargo run --example exname -- --exoption exarg1 exarg2