++ mktemp -d
+ checkout=/tmp/tmp.KfSGFhcxeX
+ trap 'rm -rf "$checkout"' EXIT
+ cp -R /var/lib/ci-tron/sources/944c8d015e27a64d/. /tmp/tmp.KfSGFhcxeX
+ cd /tmp/tmp.KfSGFhcxeX
+ nix develop --command python3 scripts/headless_test.py
GC Warning: Could not open /proc/stat
headless_test: building term...
headless_test: starting headless sway...
headless_test: headless sway is on wayland-1 (pid 3314246)
headless_test: starting term...
headless_test: term window mapped
headless_test: screenshot captured (5596 bytes)
headless_test: wlrctl found — exercising wl_pointer capability negotiation
headless_test: wl_pointer wiring survived a synthetic scroll (does not confirm axis_discrete fired)
headless_test: wlrctl found — exercising pointer motion + click
headless_test: wl_pointer click/motion wiring survived a synthetic click and follow-up motion
headless_test: resizing headless output (term was 1280x672)...
headless_test: term resized to 640x432
headless_test: post-resize screenshot captured (12304 bytes) — resize path survived
headless_test: middle-click never reached term after 5 synthetic attempts — known wlrctl virtual-pointer enter/leave race (see check_pointer_click's docstring and ROADMAP.md's Known v1 limitations), not a paste-logic failure; skipping the round-trip assertion
headless_test: PASS
+ rm -rf /tmp/tmp.KfSGFhcxeX