EC
StripPrefixError
RustERRORCriticalPath

Path prefix mismatch

Quick Answer

Verify the prefix with starts_with() before calling strip_prefix().

What this means

Returned by Path::strip_prefix() when the path does not begin with the given prefix.

Why it happens
  1. 1Path does not start with the expected root
  2. 2Absolute vs relative path mismatch

Fix

Check prefix first

Check prefix first
use std::path::Path;
let path = Path::new("/usr/share/doc/readme.txt");
let base = Path::new("/usr/share");
if path.starts_with(base) {
    let rel = path.strip_prefix(base)?;
    println!("{}", rel.display());
}

Why this works

starts_with() guards against StripPrefixError without propagating an error.

Code examples
Triggerrust
Path::new("/etc/hosts").strip_prefix("/var")?; // StripPrefixError
Sources

Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev

← All Rust errors