Random test failure nearcore::stake_nodes::test_inflation:

[pmnoxx]

@bowenwang1996 Any ideas?

https://buildkite.com/nearprotocol/nearcore/builds/7326#e9b4abc3-5de8-4c7b-9246-c5eef7b11014

[pmnoxx]

@nikurt Can you take a look?

[pmnoxx]

[2021-11-17T16:06:18Z] stack backtrace:
--
  | [2021-11-17T16:06:18Z]    0: rust_begin_unwind
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/std/src/panicking.rs:517:5
  | [2021-11-17T16:06:18Z]    1: core::panicking::panic_fmt
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/core/src/panicking.rs:101:14
  | [2021-11-17T16:06:18Z]    2: core::result::unwrap_failed
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/core/src/result.rs:1617:5
  | [2021-11-17T16:06:18Z]    3: core::result::Result<T,E>::unwrap
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/core/src/result.rs:1299:23
  | [2021-11-17T16:06:18Z]    4: near_actix_test_utils::run_actix
  | [2021-11-17T16:06:18Z]              at /var/lib/buildkite-agent/builds/buildkite-i-0105bdd244b49090e-1/nearprotocol/nearcore/test-utils/actix-test-utils/src/lib.rs:103:5
  | [2021-11-17T16:06:18Z]    5: nearcore::stake_nodes::test_inflation::{{closure}}
  | [2021-11-17T16:06:18Z]              at ./tests/nearcore/stake_nodes.rs:472:9
  | [2021-11-17T16:06:18Z]    6: integration_tests::test_helpers::heavy_test
  | [2021-11-17T16:06:18Z]              at ./src/test_helpers.rs:17:5
  | [2021-11-17T16:06:18Z]    7: nearcore::stake_nodes::test_inflation
  | [2021-11-17T16:06:18Z]              at ./tests/nearcore/stake_nodes.rs:471:5
  | [2021-11-17T16:06:18Z]    8: nearcore::stake_nodes::test_inflation::{{closure}}
  | [2021-11-17T16:06:18Z]              at ./tests/nearcore/stake_nodes.rs:470:1
  | [2021-11-17T16:06:18Z]    9: core::ops::function::FnOnce::call_once
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/core/src/ops/function.rs:227:5
  | [2021-11-17T16:06:18Z]   10: core::ops::function::FnOnce::call_once
  | [2021-11-17T16:06:18Z]              at /rustc/09c42c45858d5f3aedfa670698275303a3d19afa/library/core/src/ops/function.rs:227:5
  | [2021-11-17T16:06:18Z] note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
  | [2021-11-17T16:06:18Z]
  | [2021-11-17T16:06:18Z]
  | [2021-11-17T16:06:18Z] failures:
  | [2021-11-17T16:06:18Z]     stake_nodes::test_inflation
  | [2021-11-17T16:06:18Z]
  | [2021-11-17T16:06:18Z] test result: FAILED. 33 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 257.52s