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fix(rootfs): emulation-test flaked on a broken pipe from qemu -version #534

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Merged
zcsizmadia merged 1 commit into from
Oct 12, 2026
Merged

fix(rootfs): emulation-test flaked on a broken pipe from qemu -version #534

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6 changes: 5 additions & 1 deletion guest/rootfs/emulation-test.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,11 @@ echo "==> host is $ROOTFS_ARCH; this rootfs should be able to emulate $ARCH_EMUL
docker import "$tarball" "$image" >/dev/null

echo "==> the emulator ships and runs"
docker run --rm "$image" "$QEMU_BIN" -version | head -1 | sed 's/^/ /'
# Capture first, then trim. `| head -1` closes the pipe while the docker CLI is
# still writing the second line of `qemu -version`; under pipefail that is a
# broken-pipe failure on some runs and not others.
qemu_version=$(docker run --rm "$image" "$QEMU_BIN" -version)
echo "$qemu_version" | sed -n '1s/^/ /p'

echo "==> and nothing is registered out of the box"
# Emulation is opt-in. A rootfs that registered an interpreter by itself would
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