Zombie handling test sporadically (one occurrence so far) throws unexpected error

[sysarch-repo]

Describe the bug
CNF testsuite 1.3.3 sporadically (one occurrence so far) throws an unexpected error.
The error did not show up during the subsequent run (network glitch or race condition?).

🎬 Testing: [zombie_handled]
💥 🏆ERROR: [zombie_handled] Unexpected error occurred
E, [2025-01-03 10:11:39 UTC #1033] ERROR -- cnf-testsuite: unexpected token '' at line 921, column 11
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:125:5 in 'parse_exception'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:121:5 in 'unexpected_token'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/enumerable.cr:88:16 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:49:11 in 'parse_array'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:33:7 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:85:19 in 'parse_object'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:35:7 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:85:19 in 'parse_object'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:35:7 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:85:19 in 'parse_object'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:35:7 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:85:19 in 'parse_object'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:35:7 in 'parse_value'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/json/parser.cr:107:11 in 'node_pid_by_container_id'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/lib/cluster_tools/cluster_tools.cr:201:34 in '->'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/src/tasks/utils/task.cr:118:11 in 'all_cnfs_task_runner'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/src/tasks/utils/task.cr:38:9 in 'task_runner:task'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/lib/sam/src/sam/execution.cr:32:7 in 'invoke_tasks_by_tag_list'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/indexable.cr:697:3 in '->'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/lib/sam/src/sam/execution.cr:20:7 in 'call'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /workspace/lib/sam/src/sam/execution.cr:20:7 in '__crystal_main'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: /usr/share/crystal/src/crystal/main.cr:115:5 in 'main'
E, [2025-01-03 10:11:40 UTC #1033] ERROR -- cnf-testsuite: src/env/__libc_start_main.c:95:2 in 'libc_start_main_stage2'