Reproduce
❯ seq 1 20 | while read i; do cargo test --test tests errors 2>&1 | grep "test result"; done | sort | uniq -c
Stats
Original upstream code (1.34.0) with fresh cargo build:
| Configuration | Pass Rate |
|---------------------------------------------|--------------|
| ordered-channel 1.2.0 + multi-thread | ~60% (12/20) |
| ordered-channel 1.1.0 + multi-thread | ~70% (14/20) |
| ordered-channel 1.2.0 + RAYON_NUM_THREADS=1 | ~50% (10/20) |
| ordered-channel 1.1.0 + RAYON_NUM_THREADS=1 | ~55% (11/20) |
Environment
gifski version: 1.34.0
rust toolchain
❯ rustc --version
rustc 1.93.0-nightly (b84478a1c 2025-11-30)
system
❯ sw_vers
ProductName: macOS
ProductVersion: 26.1
BuildVersion: 25B78
