The refused-first-dial red measured: a child's copy of a dropped listener, fixed on main by #566; two issues filed

issues/build/a-compiler-fixtures-git-commit-could-not-create-a-temporary-file.md

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+---
+status: open
+kind: tooling
+opened: 2026-09-29
+---
+
+# A compiler fixture's git commit could not create a temporary file
+
+`src/compiler.rs`'s `a_missing_primary_record_is_refused_and_builds_nothing`
+went red in 1 of 200 full runs of the toyos-build lib test binary at
+`e3a1cdc8`. Those runs went beside a `cargo test --workspace --exclude
+toyos-build` loop as host load, with the 1-minute load average at 62.82 for
+that run. The fixture's own git failed, not the code under test:
+
+    panicked at src/compiler.rs:373:9:
+    git ["commit", "-qam", "a target"] in $TMPDIR/toyos-tmp-4827-0/compiler-record-29/fork-src:
+    error: unable to create temporary file: Invalid argument
+    fatal: failed to write commit object
+
+The other 199 runs passed. Nothing has measured why git's temporary file in
+that repository's object store failed with EINVAL. No host-test counterpart of
+`src/redlist.rs` disables the test, so every `cargo test -p toyos-build --lib`
+still runs it.
+
+## Exit condition
+
+The EINVAL is traced to a cause the test can rule out by construction, and a
+loop of 200 loaded runs shows the test green each time.

issues/diagnostics/a-first-dial-turned-away-before-a-line-is-waited-on-to-its-callers-bound.md

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+---
+status: open
+kind: tooling
+opened: 2026-09-28
+---
+
+# A first dial turned away before a line is waited on to its caller's bound
+
+`src/metaltalk.rs`'s `serve` never asks a first dial again when its
+connection closes before a line (`again` is false), and it records no
+`unopened` for it. So `Stream::wait_for_connection` still reads the stream as
+dialling (`state.unopened.is_none()`) and waits out its whole `by`. Its doc says
+it returns "once the dial asked for it ended with none". Through QEMU's
+forward that close is the only sign the guest refused, and each caller then
+names the wrong thing, late:
+
+- `metalswap::swap` says "no boot opened the record stream within N s" once
+  the whole window has passed.
+- `tests/common/logstream.rs`'s `reader` says "the stream never opened" once
+  `CEILING` has passed.
+- `converse` waits `FOREVER` and returns only at the metal loop's `give_up`.
+
+The close itself is recorded in `end`.
+
+Measured: a mutation of
+`a_refused_first_dial_is_asked_again_up_to_its_ceiling` hands its first dial
+to a listener that accepts it and closes it before a line. That test's
+`wait_connected(5 s)` returned `None` after 5.02 s, and `unopened()` was still
+`None`.
+
+## Exit condition
+
+A first dial whose connection closes before a line ends `wait_for_connection`
+at once, and `unopened` names the close. A host test stages that close
+through a listener it owns and accepts on, and fails on the base.