When diffing Arch Linux packages there's some data written to stdio from the zstd process spawned by diffoscope: ``` 1-x86_64.pkg.tar.zst : 0 MB... 1-x86_64.pkg.tar.zst : 43 MB... 1-x86_64.pkg.tar.zst : 126 MB... 1-x86_64.pkg.tar.zst : 190 MB... 1-x86_64.pkg.tar.zst : 238 MB... 1-x86_64.pkg.tar.zst : 274 MB... /tmp/rebuilderdvJw0dy/signal-desktop-1.38.2-1-x86_64.pkg.tar.zst: 332861440 bytes 1-x86_64.pkg.tar.zst : 0 MB... 1-x86_64.pkg.tar.zst : 42 MB... 1-x86_64.pkg.tar.zst : 129 MB... 1-x86_64.pkg.tar.zst : 191 MB... 1-x86_64.pkg.tar.zst : 239 MB... 1-x86_64.pkg.tar.zst : 276 MB... ./build/signal-desktop-1.38.2-1-x86_64.pkg.tar.zst: 332861440 bytes --- /tmp/rebuilderdvJw0dy/signal-desktop-1.38.2-1-x86_64.pkg.tar.zst +++ ./build/signal-desktop-1.38.2-1-x86_64.pkg.tar.zst ├── signal-desktop-1.38.2-1-x86_64.pkg.tar │ ├── file list [...] ``` https://reproducible.archlinux.org/api/v0/builds/3162/diffoscope