Enum InstanceError 

pub enum InstanceError {
    Path(PathsError),
    Open {
        path: PathBuf,
        source: Error,
    },
    AlreadyRunning {
        path: PathBuf,
    },
    LockFailed {
        path: PathBuf,
        source: Error,
    },
}

Failure acquiring the single-instance lock. InstanceError::AlreadyRunning is the expected “another copy is open” signal; every other variant indicates filesystem trouble.

Variants

Path(PathsError)

The lock file’s directory could not be resolved (no home directory).

Open

Creating or opening the lock file failed.

Fields

path: PathBuf

The lock file being opened.

source: Error

The underlying I/O error.

AlreadyRunning

Another process of the same role already holds the lock — surface it politely and exit with a non-error status.

Fields

path: PathBuf

The contested lock file.

LockFailed

The lock syscall itself failed, as opposed to the lock being held.

Fields

path: PathBuf

The lock file the attempt targeted.

source: Error

The underlying I/O error.

Trait Implementations

impl Debug for InstanceError

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

Formats the value using the given formatter.

impl Display for InstanceError

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

Formats the value using the given formatter.

impl Error for InstanceError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<PathsError> for InstanceError

fn from(source: PathsError) -> Self

Converts to this type from the input type.