test: flaky SIGABORT at replication/bootstrap_leader.test.lua test

[avtikhon]

Tarantool version:
Tarantool 2.7.0-10-g7b3acc3d4
Target: FreeBSD-amd64-RelWithDebInfo
Build options: cmake . -DCMAKE_INSTALL_PREFIX=/usr/local -DENABLE_BACKTRACE=OFF
Compiler: /usr/bin/cc /usr/bin/c++
C_FLAGS: -Wno-unknown-pragmas -fexceptions -funwind-tables -fno-common -std=c11 -Wall -Wextra -Wno-strict-aliasing -Wno-char-subscripts -Wno-gnu-alignof-expression -Werror
CXX_FLAGS: -Wno-unknown-pragmas -fexceptions -funwind-tables -fno-common -std=c++11 -Wall -Wextra -Wno-strict-aliasing -Wno-char-subscripts -Wno-invalid-offsetof -Wno-gnu-alignof-expression -Werror

OS version:
FreeBSD 12

Bug description:
https://gitlab.com/tarantool/tarantool/-/jobs/822771076#L4714

artifacts.zip

results file checksum: e1a4aafd227fc5e41ce74a92bb7fa5ad

[007] replication/bootstrap_leader.test.lua           memtx           
[007] 
[007] [Instance "replica_uuid_rw2" returns with non-zero exit code: 1]
[007] 
[007] Last 15 lines of Tarantool Log file [Instance "replica_uuid_rw2"][/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw2.log]:
[007] 2020-05-08 08:19:17.107 [26572] iproto/101/main I> binary: bound to unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw2.sock
[007] 2020-05-08 08:19:17.107 [26572] main/103/replica_uuid_rw2 I> connecting to 3 replicas
[007] 2020-05-08 08:19:17.108 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock I> can't connect to master
[007] 2020-05-08 08:19:17.108 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock sio.c:193 !> SystemError connect to unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock, called on fd 28, aka unix/:(socket): Connection refused
[007] 2020-05-08 08:19:17.108 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock I> will retry every 1.00 second
[007] 2020-05-08 08:19:17.109 [26572] main/113/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw1.sock I> remote master aaaaaaaa-aaaa-0000-0000-000000000001 at unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw1.sock running Tarantool 2.7.0
[007] 2020-05-08 08:19:17.110 [26572] main/114/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw2.sock I> remote master aaaaaaaa-aaaa-0000-0000-000000000002 at unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw2.sock running Tarantool 2.7.0
[007] 2020-05-08 08:19:18.663 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock I> remote master aaaaaaaa-aaaa-0000-0000-000000000003 at unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock running Tarantool 2.7.0
[007] 2020-05-08 08:19:18.663 [26572] main/103/replica_uuid_rw2 I> connected to 3 replicas
[007] 2020-05-08 08:19:18.663 [26572] main/103/replica_uuid_rw2 I> bootstrapping replica from aaaaaaaa-aaaa-0000-0000-000000000003 at unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock
[007] 2020-05-08 08:19:18.664 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock I> can't read row
[007] 2020-05-08 08:19:18.664 [26572] main/115/applier/unix/:/home/vagrant/tarantool/test/var/007_replication/replica_uuid_rw3.sock box.cc:183 E> ER_READONLY: Can't modify data because this instance is in read-only mode.
[007] 2020-05-08 08:19:18.664 [26572] main/103/replica_uuid_rw2 box.cc:183 E> ER_READONLY: Can't modify data because this instance is in read-only mode.
[007] 2020-05-08 08:19:18.664 [26572] main/103/replica_uuid_rw2 F> can't initialize storage: Can't modify data because this instance is in read-only mode.
[007] 2020-05-08 08:19:18.664 [26572] main/103/replica_uuid_rw2 F> can't initialize storage: Can't modify data because this instance is in read-only mode.

Steps to reproduce:

Optional (but very desirable):

• coredump
• backtrace
• netstat