https://travis-ci.org/bitcoin/bitcoin/jobs/623309923#L4118
Running 10 test cases...
Test cases order is shuffled using seed: 912564877
Entering test module "Bitcoin Core Test Suite"
wallet/test/wallet_tests.cpp(27): Entering test suite "wallet_tests"
wallet/test/wallet_tests.cpp(330): Entering test case "ComputeTimeSmart"
wallet/test/wallet_tests.cpp(330): Leaving test case "ComputeTimeSmart"; testing time: 35797us
wallet/test/wallet_tests.cpp(37): Entering test case "scan_for_wallet_transactions"
wallet/test/wallet_tests.cpp(37): Leaving test case "scan_for_wallet_transactions"; testing time: 20844us
wallet/test/wallet_tests.cpp(513): Entering test case "ListCoins"
wallet/test/wallet_tests.cpp(513): Leaving test case "ListCoins"; testing time: 785630us
wallet/test/wallet_tests.cpp(629): Entering test case "dummy_input_size_test"
wallet/test/wallet_tests.cpp(629): Leaving test case "dummy_input_size_test"; testing time: 13920us
wallet/test/wallet_tests.cpp(418): Entering test case "WatchOnlyPubKeys"
wallet/test/wallet_tests.cpp(418): Leaving test case "WatchOnlyPubKeys"; testing time: 23177us
wallet/test/wallet_tests.cpp(194): Entering test case "importwallet_rescan"
wallet/test/wallet_tests.cpp(194): Leaving test case "importwallet_rescan"; testing time: 16664us
wallet/test/wallet_tests.cpp(579): Entering test case "wallet_disableprivkeys"
wallet/test/wallet_tests.cpp(579): Leaving test case "wallet_disableprivkeys"; testing time: 13974us
wallet/test/wallet_tests.cpp(356): Entering test case "LoadReceiveRequests"
unknown location(0): fatal error: in "wallet_tests/LoadReceiveRequests": memory access violation at address: 0x00000000: no mapping at fault address
wallet/test/wallet_tests.cpp(356): last checkpoint: "LoadReceiveRequests" fixture dtor
Test is aborted
wallet/test/wallet_tests.cpp(356): Leaving test case "LoadReceiveRequests"; testing time: 17524us
Test is aborted
wallet/test/wallet_tests.cpp(27): Leaving test suite "wallet_tests"; testing time: 927599us
Test is aborted
Leaving test module "Bitcoin Core Test Suite"; testing time: 927623us
*** 1 failure is detected in the test module "Bitcoin Core Test Suite"
test_bitcoin: /usr/include/boost/thread/pthread/condition_variable_fwd.hpp:116: boost::condition_variable::~condition_variable(): Assertion `!ret' failed.
Makefile:15324: recipe for target 'wallet/test/wallet_tests.cpp.test' failed
Running tests: coinselector_tests from wallet/test/coinselector_tests.cpp
make[3]: Leaving directory '/home/travis/build/bitcoin/bitcoin/build/bitcoin-s390x-unknown-linux-gnu/src'