build_id 0.2.1

Obtain a UUID uniquely representing the build of the current binary.

build_id MIT / Apache 2.0 licensed Build Status


Obtain a Uuid uniquely representing the build of the current binary.

This is intended to be used to check that different processes are indeed invocations of identically laid out binaries.

As such:

  • It is guaranteed to be identical within multiple invocations of the same binary.
  • It is guaranteed to be different across binaries with different code or data segments or layout.
  • Equality is unspecified if the binaries have identical code and data segments and layout but differ immaterially (e.g. if a timestamp is included in the binary at compile time).


let local_build_id = build_id::get();
if local_build_id == remote_build_id {
	println!("We're running the same binary as remote!");
} else {
	println!("We're running a different binary to remote");


This looks first for linker-inserted build ID / binary UUIDs (i.e. on Linux; LC_UUID in Mach-O; etc), falling back to hashing the whole binary.


Licensed under either of

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.