scripts/testbox.sh web-selftest on 61948022 (excerpt)

  ✘   73 [chromium] › selftest/web-driver.spec.ts:2446:1 › #2337: agent Shift+Enter preserves xterm input effects while shell keeps CR @real-fixture (22.4s)
  ✘   84 [chromium] › selftest/web-driver.spec.ts:3455:1 › tabs: create a shell tab, switch to it, see its distinct output, close it (#1592 PR7) @real-fixture (15.1s)
  ✘   85 [chromium] › selftest/web-driver.spec.ts:3601:3 › split panes (SESSION_A roster) › split panes (feat): drag a tab to a pane edge splits into two live panes; close collapses back @real-fixture (15.4s)
  ✘   86 [chromium] › selftest/web-driver.spec.ts:3651:3 › split panes (SESSION_A roster) › split panes (feat): a FRESHLY-CREATED tab is a drag source too — drag the new tab splits (#1737 follow-up) @real-fixture (15.5s)
  ✘   88 [chromium] › selftest/web-driver.spec.ts:3754:3 › split panes (SESSION_A roster) › split panes (feat): an out-of-range dropped tab is ignored — no broken pane @real-fixture (15.4s)
  ✘   89 [chromium] › selftest/web-driver.spec.ts:3770:3 › split panes (SESSION_A roster) › split panes (feat): a mid-drag tab-set change cancels the drop — no misbinding (#1738 repro) @real-fixture (1.0m)
  ✘   90 [chromium] › selftest/web-driver.spec.ts:3803:1 › split panes (#1901): dragging the ACTIVE tab splits and opens a DIFFERENT tab beside it @real-fixture (15.3s)
  ✘   91 [chromium] › selftest/web-driver.spec.ts:3865:1 › split panes (#1901): dragging the only tab of a ONE-tab session is an inert no-op @real-fixture (15.3s)
  ✘  139 [chromium] › selftest/web-driver.spec.ts:6938:1 › #2347: the mobile agent terminal also reclaims peer-owned geometry @real-fixture (23.8s)
  ✘  142 [chromium] › selftest/web-driver.spec.ts:7243:1 › #1815: a tab created out-of-band must not rewind the scrolled terminal @real-fixture (15.2s)
  ✘  143 [chromium] › selftest/web-driver.spec.ts:7343:1 › #1815: a resize must not re-arm the rewind on the next out-of-band resync @real-fixture (15.4s)
  ✘  146 [chromium] › selftest/web-driver.spec.ts:7607:1 › #1815 review: a pane focused mid-close keeps its own tab @real-fixture (15.7s)
  ✘  155 [chromium] › selftest/web-driver.spec.ts:8018:1 › a live PTY stream and the events WS survive the service worker controlling the page @real-fixture (15.9s)
  13 failed
  182 passed (10.7m)

Representative corrupted shared fixture output:
    Received string:    "AgentKeyboard[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[shift-enter-scroll-24shift-enter-scroll-25shift-enter-scroll-25shift-enter-scroll-26shift-enter-scroll-26shift-enter-scroll-27shift-enter-scroll-27shift-enter-scroll-28shift-enter-scroll-28shift-enter-scroll-29shift-enter-scroll-29shift-enter-scroll-30shift-enter-scroll-30shift-enter-scroll-31shift-enter-scroll-31shift-enter-scroll-32shift-enter-scroll-32shift-enter-scroll-33shift-enter-scroll-33shift-enter-scroll-34shift-enter-scroll-34shift-enter-scroll-35shift-enter-scroll-35shift-enter-scroll-36shift-enter-scroll-36shift-enter-scroll-37shift-enter-scroll-37shift-enter-scroll-38shift-enter-scroll-38shift-enter-scroll-39shift-enter-scroll-39shift-enter-scroll-40shift-enter-scroll-40^[ "
    Received string:    "AgentKeyboard00000000000000000000000000000000AF_SELFTlls_READxylls1;5Als^[[1;3Dls^[[1;5A^X^[   z^[[1;5Als^[[1;3Dls^[[1;5A^X^[   zxyshift-enter-scroll-1shift-enter-scroll-1shift-enter-scroll-2shift-enter-scroll-2shift-enter-scroll-3shift-enter-scroll-3shift-enter-scroll-4shift-enter-scroll-4shift-enter-scroll-5shift-enter-scroll-5shift-enter-scroll-6shift-enter-scroll-6shift-enter-scroll-7shift-enter-scroll-7shift-enter-scroll-8shift-enter-scroll-8shift-enter-scroll-9shift-enter-scroll-9shift-enter-scroll-10shift-enter-scroll-10shift-enter-scroll-11shift-enter-scroll-11shift-enter-scroll-12shift-enter-scroll-12shift-enter-scroll-13shift-enter-scroll-13shift-enter-scroll-14shift-enter-scroll-14shift-enter-scroll-15shift-enter-scroll-15   "
    Received string:    "k2Keyboard                                 AgentKeyboard[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[shift-enter-scroll-24shift-enter-scroll-25shift-enter-scroll-25shift-enter-scroll-26shift-enter-scroll-26shift-enter-scroll-27shift-enter-scroll-27shift-enter-scroll-28shift-enter-scroll-28shift-enter-scroll-29shift-enter-scroll-29shift-enter-scroll-30shift-enter-scroll-30shift-enter-scroll-31shift-enter-scroll-31shift-enter-scroll-32shift-enter-scroll-32shift-enter-scroll-33shift-enter-scroll-33shift-enter-scroll-34shift-enter-scroll-34shift-enter-scroll-35shift-enter-scroll-35shift-enter-scroll-36shift-enter-scroll-36shift-enter-scroll-37shift-enter-scroll-37shift-enter-scroll-38shift-enter-scroll-38^[ "