Enum OwnerLockError 

pub enum OwnerLockError {
    Record(OwnerRecordError),
    Identity(ProcessIdentityError),
    Random(RandomSourceError),
    Io {
        operation: &'static str,
        path: PathBuf,
        error: Error,
    },
    OwnershipChanged(PathBuf),
}

What: Why an owner-lock operation failed. Why: Each failure stops the caller with the lock named; none is a reason to delete a lock that might belong to a live owner.

In TS you’d write (pseudocode):

class OwnerLockError extends Error {}

Variants

Record(OwnerRecordError)

The blocking lock’s record is malformed or unreadable.

Identity(ProcessIdentityError)

The current process has no identity, or an owner’s liveness could not be decided.

Random(RandomSourceError)

No random token could be made.

Io

A filesystem step failed.

Fields

operation: &'static str

What the step was doing, in words.

path: PathBuf

The path it acted on.

error: Error

The operating system’s refusal.

OwnershipChanged(PathBuf)

The lock named another owner when this holder released it.

Trait Implementations

impl Debug for OwnerLockError

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

Formats the value using the given formatter.

impl Display for OwnerLockError

What: Human-readable text for each failure. Why: Diagnostics name the lock and the reason.

In TS you’d write (pseudocode):

error.message

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

Writes one sentence naming the lock and what went wrong.