How we recovered multiple languages from failing to 100%

Devlog - 2026-03-21

Overview

Big recovery day. Java, Rust, and JavaScript all moved from unstable outcomes to full pass coverage. The key point is this was not just a code-fix day at the solution layer. Most of the gains came from pipeline behavior changes.

Recovery Results

Recovered to 100% for:

• Java
• Rust
• JavaScript

At the same time, I consolidated the scoreboard output so all language summaries were being produced from one artifact model instead of mixed counters.

What Changed in Pipeline Behavior

The recovery came from tightening execution behavior, not hand-tuning individual problems:

• standardized preflight checks before compile/run dispatch
• normalized provider IO so status, stdout, and stderr were interpreted the same way per language
• stabilized submit/poll behavior in batch execution to reduce false timeouts
• enforced one summary path for scoreboard generation from fresh JSON artifacts

Why This Was Different

Before this, a language could fail for reasons that had nothing to do with the actual solver path. After these changes, a failure was much more likely to represent a real issue rather than pipeline ambiguity.

That is what made the 100% recovery meaningful.