Struct FindOpts 

pub struct FindOpts {
    pub bisect: bool,
    pub linear: bool,
    pub write_toolchain_file: bool,
    pub ignore_lockfile: bool,
    pub skip_unavailable_toolchains: bool,
    pub no_check_feedback: bool,
    pub write_msrv: bool,
    pub rust_releases_opts: RustReleasesOpts,
    pub toolchain_opts: ToolchainOpts,
    pub custom_check_opts: CustomCheckOpts,
}

Fields

bisect: bool

Use a binary search to find the MSRV (default)

When the search space is sufficiently large, which is common, this is much faster than a linear search. A binary search will approximately halve the search space for each Rust version checked for compatibility.

linear: bool

Use a linear search to find the MSRV

This method checks toolchain from the most recent release to the earliest.

write_toolchain_file: bool

Pin the MSRV by writing the version to a rust-toolchain file

The toolchain file will pin the Rust version for this crate.

ignore_lockfile: bool

Temporarily remove the lockfile, so it will not interfere with the building process

This is important when testing against older Rust versions such as Cargo versions prior to Rust 1.38.0, for which Cargo does not recognize the newer lockfile formats.

skip_unavailable_toolchains: bool

Treats a Rust version as incompatible when a toolchain failed to install or was otherwise unavailable

Can be useful for reducing the search space on platforms with limited toolchain availability. Be warned that network errors on either end can also mark versions incorrectly as incompatible.

no_check_feedback: bool

Don’t print the result of compatibility checks

The feedback of a compatibility check can be useful to determine why a certain Rust version is not compatible. Rust usually prints very detailed error messages. While most often very useful, in some cases they may be too noisy or lengthy. If this flag is given, the result messages will not be printed.

write_msrv: bool

Write the MSRV to the Cargo manifest

For toolchains which include a Cargo version which supports the rust-version field, the package.rust-version field will be written. For older Rust toolchains, the package.metadata.msrv field will be written instead.

rust_releases_opts: RustReleasesOpts

toolchain_opts: ToolchainOpts

custom_check_opts: CustomCheckOpts

Trait Implementations

impl Args for FindOpts

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl Debug for FindOpts

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromArgMatches for FindOpts

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.