Do not panic in OsIpcOneShotServer::new #128

Job	Run time
Linux	33s
macOS	35s
Linux (force-inprocess)	34s
Windows (x86_64-pc-windows-msvc)	58s
macOS (force-inprocess)	25s
Linux (memfd)	32s
Windows (i686-pc-windows-msvc)	1m 3s
macOS (async)	30s
Linux (async)	37s
Windows (--features force-inprocess, x86_64-pc-windows-msvc)	58s
Windows (--features force-inprocess, i686-pc-windows-msvc)	1m 1s
Windows (--features windows-shared-memory-equality, x86_64-pc-windows-msvc)	52s
Windows (--features windows-shared-memory-equality, i686-pc-windows-msvc)	1m 6s
Windows (--features async, x86_64-pc-windows-msvc)	1m 10s
Windows (--features async, i686-pc-windows-msvc)	1m 13s
Result	1s
	12m 8s

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