fix 784: dont crash on huge in-memory bodies #13

Job	Run time
Soundness / Broken symlinks check	7s
Soundness / API breakage check	3m 20s
Soundness / Documentation check	2m 19s
Soundness / Format check	39s
Soundness / License headers check	6s
Soundness / Unacceptable language check	2s
Soundness / Python lint check	7s
Soundness / Shell check	35s
Soundness / YAML lint check	3s
Cxx interop / Cxx interop / Linux (5.9)	2m 2s
Cxx interop / Cxx interop / Linux (5.10)	1m 56s
Cxx interop / Cxx interop / Linux (6.0)	2m 18s
Cxx interop / Cxx interop / Windows (nightly-6.0)	2s
Cxx interop / Cxx interop / Windows (6.0)	1s
Cxx interop / Cxx interop / Linux (nightly-6.0)	2m 50s
Cxx interop / Cxx interop / Windows (nightly-main)	3s
Cxx interop / Cxx interop / Linux (nightly-main)	2m 41s
Unit tests / Unit tests / Linux (5.9)	2m 3s
Unit tests / Unit tests / Windows (nightly-6.0)	1s
Unit tests / Unit tests / Linux (5.10)	2m 2s
Unit tests / Unit tests / Windows (nightly-main)	1s
Unit tests / Unit tests / Linux (6.0)	4m 44s
Unit tests / Unit tests / Linux (nightly-6.0)	3m 33s
Unit tests / Unit tests / Windows (6.0)	1s
Unit tests / Unit tests / Linux (nightly-main)	3m 34s
	35m 10s

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