Proto: do not use parallel iterators

Using serial iterators (map_s) instead of parallel iterators (map_p)
increases the determinism of the protocol.
50 jobs for raphael@no-parallel-in-proto in 10 minutes and 17 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #252359897
gitlab-org
build

00:03:47

passed #252359896
gitlab-org
check_linting

00:01:37

passed #252359891
gitlab-org
check_opam_deps

00:01:17

passed #252359893
gitlab-org
check_opam_lint

00:00:14

 
  Test
passed #252359977
gitlab-org
documentation:build

00:03:53

passed #252359980
gitlab-org allowed to fail
documentation:linkcheck

00:06:01

passed #252359940
gitlab-org
integration:baker_endorser

00:03:02

passed #252359941
gitlab-org
integration:basic

00:02:29

passed #252359927
gitlab-org
integration:basic.sh

00:01:06

passed #252359942
gitlab-org
integration:contract

00:02:49

passed #252359943
gitlab-org
integration:contract_baker

00:02:26

passed #252359928
gitlab-org
integration:contracts.sh

00:02:35

passed #252359930
gitlab-org
integration:contracts_macros.sh

00:01:07

passed #252359932
gitlab-org
integration:contracts_mini_scenarios.sh

00:02:38

passed #252359929
gitlab-org
integration:contracts_opcode.sh

00:03:20

passed #252359944
gitlab-org
integration:cors

00:02:19

passed #252359969
gitlab-org
integration:double_endorsement

00:02:35

passed #252359934
gitlab-org
integration:inject.sh

00:02:36

passed #252359947
gitlab-org
integration:injection

00:02:31

passed #252359949
gitlab-org
integration:many_bakers

00:02:45

passed #252359953
gitlab-org
integration:many_nodes

00:02:48

passed #252359955
gitlab-org
integration:mempool

00:00:52

passed #252359958
gitlab-org
integration:multinode

00:02:35

passed #252359933
gitlab-org
integration:multinode.sh

00:03:54

passed #252359936
gitlab-org
integration:proto:sandbox

00:02:21

passed #252359975
gitlab-org
integration:proto_demo_noops

00:02:29

passed #252359960
gitlab-org
integration:rpc

00:02:10

passed #252359938
gitlab-org
integration:sandboxes:acc-baking

00:02:53

passed #252359939
gitlab-org
integration:sandboxes:acc-endorsement

00:02:59

passed #252359937
gitlab-org allowed to fail
integration:sandboxes:voting

00:06:09

passed #252359972
gitlab-org
integration:snapshot

00:02:42

passed #252359963
gitlab-org
integration:tls

00:02:25

passed #252359966
gitlab-org
integration:voting

00:02:36

passed #252359935
gitlab-org
integration:voting.sh

00:02:45

passed #252359905
gitlab-org
unit:crypto

00:02:17

passed #252359902
gitlab-org
unit:data_encoding

00:02:21

passed #252359926
gitlab-org
unit:micheline

00:02:11

passed #252359924
gitlab-org
unit:p2p:banned_peers

00:02:19

passed #252359910
gitlab-org
unit:p2p:io-scheduler

00:02:22

passed #252359923
gitlab-org
unit:p2p:ipv6set

00:02:11

passed #252359921
gitlab-org
unit:p2p:peerset

00:02:12

passed #252359914
gitlab-org
unit:p2p:pool

00:02:33

passed #252359912
gitlab-org
unit:p2p:socket

00:02:14

passed #252359919
gitlab-org
unit:proto_alpha:lib_client

00:02:14

passed #252359917
gitlab-org
unit:proto_alpha:lib_protocol

00:05:22

passed #252359907
gitlab-org
unit:shell

00:02:26

passed #252359899
gitlab-org
unit:stdlib

00:02:14

passed #252359900
gitlab-org
unit:stdlib_unix

00:02:15

passed #252359903
gitlab-org
unit:storage

00:02:14

passed #252359925
gitlab-org
unit:validation

00:02:16