Enum WorkerExitInfo 

pub enum WorkerExitInfo {
    Exited(i32),
    Signaled(i32),
    TimedOut,
    WaitFailed(String),
    Panicked(String),
}

Reason a sentinel WorkerReport was synthesized — attached to the report’s exit_info field so operators can triage a missing or undecodable postcard payload without cross-referencing parent-side logs.

Invariant: every variant carries the waitpid-derived status for the worker PID as of the end of stop_and_collect. Ordered from most-informative (exit code) to least (plumbing failure). No Default impl — every variant carries observed-outcome state. A default-constructed value would have to pick one variant (TimedOut was the obvious candidate) but that risks silent-pass: a test fixture using ..Default::default() on a struct containing WorkerExitInfo gets “worker never exited within the deadline,” which an operator triaging the failure would chase for minutes before realizing the value came from a missing field. Construct every WorkerExitInfo explicitly via the variant the test scenario expects (e.g. WorkerExitInfo::Exited(0) for a clean success).

Variants

Exited(i32)

WIFEXITED=true with the given exit code. Non-zero under panic = "unwind" means catch_unwind caught a panic in the worker-child closure and _exit(1) fired, or the 30s parent-ready poll timed out. Zero means the worker ran to completion but failed to write / serialize the report — a postcard encode or pipe-write failure that didn’t panic.

Signaled(i32)

WIFSIGNALED=true with the given signal number. Under panic = "abort" a worker panic raises SIGABRT (signal 6); other values indicate external kill, OOM killer, or the still-alive-escalation SIGKILL (signal 9) from this function.

TimedOut

Worker was still running after the 5s shared collection deadline; escalated via SIGKILL + blocking waitpid. The child’s final status is not retained — the reap happened past the point where operator diagnostics would differ between a clean timeout and a signal storm.

WaitFailed(String)

waitpid itself returned Err — typically ECHILD (child already reaped by an external signal handler or a double-reap regression) or EINTR. Message is the rendered errno string.

Panicked(String)

Thread-mode worker panicked. JoinHandle::join() returned Err; the inner payload is downcast to a &str / String (the canonical panic! payload shapes) and recorded here so the operator can triage without scraping the test log. This variant is exclusive to CloneMode::Thread — fork workers surface panics via Exited(1) or Signaled(SIGABRT) depending on the panic strategy.

Trait Implementations

impl Clone for WorkerExitInfo

fn clone(&self) -> WorkerExitInfo

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WorkerExitInfo

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WorkerExitInfo

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for WorkerExitInfo

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.