Testsuite doesn't run on Alpine Linux / Musl

[Geod24]

I am usually working on OSX those days, and when it comes to Linux, tend to use Alpine Linux because a container is quite easy to start. However, running dub test -- --single --trace (or even without the arguments) leads to the testsuite just hanging.

To force a rebuild of up-to-date targets, run again with --force.
Running ./dlang-bot --single --trace
[main(----) INF] Listening for requests on http://0.0.0.0:35499/
[main(----) INF] Listening for requests on http://0.0.0.0:45335/

That might be a problem with unit_threaded, or with how the testsuite is setup.

[Geod24]

I tried on Ubuntu as well (still in a docker container though), and it seems there's a deadlock. The process is stuck with two threads, and the following stack traces:

(gdb) thread 1
[Switching to thread 1 (Thread 0x7f60bbd40900 (LWP 6818))]
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
135	in ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
(gdb) bt
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f60baf9f098 in __GI___pthread_mutex_lock (mutex=0x7f60bbc3ebb8) at ../nptl/pthread_mutex_lock.c:113
#2  0x000055b6883d015d in _D4core4sync5mutex5Mutex__T12lock_nothrowTOCQBqQBoQBmQBjZQBeMOFNbNiNeZv (
    this=0x7f60bbc3eba0) at /root/dlang/dmd-2.092.0/linux/bin64/../../src/druntime/import/core/sync/mutex.di:83
#3  0x000055b68839b95a in _D4vibe4core4sync__T7MonitorTSQBcQBaQy11ManualEvent7WaitersTOCQCdQCb5mutex5MutexZQCj4lockMOFZ9__lambda1MFNbNiNeZv (__capture=0x7ffdfe7768c0)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1327
#4  0x000055b68839b91f in _D4vibe4core4sync__T7MonitorTSQBcQBaQy11ManualEvent7WaitersTOCQCdQCb5mutex5MutexZQCj4lockMOFNbNiNfZSQDuQDsQDq__TQDoTQDjTOQCiZQEb6Locked (this=..., __HID203=0x7ffdfe776908)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1329
#5  0x000055b6883968aa in vibe.core.sync.ManualEvent.emit() shared (this=...)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1034
#6  0x000055b68839cd1c in _D4vibe4core4sync__T17TaskConditionImplVbi0TCQBmQBk5mutex5MutexZQBs6notifyMFNbNeZv (
    this=...) at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1719
#7  0x000055b6883962c9 in vibe.core.sync.TaskCondition.notify() (this=0x7f60bbc4fd00)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:684
#8  0x000055b688455b9b in _D3std11concurrency10MessageBox3putMFKSQBlQBk7MessageZv ()
#9  0x000055b68820896e in _D3std11concurrency__T5_sendTS13unit_threaded6runner2io10ThreadWaitZQBuFEQCtQCs7MsgTypeSQDiQDh3TidQCrZv (_param_2=..., tid=..., type=<incomplete type>)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:661
#10 0x000055b68820890a in _D3std11concurrency__T5_sendTS13unit_threaded6runner2io10ThreadWaitZQBuFSQCtQCs3TidQCcZv (
    _param_1=..., tid=...) at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:650
#11 0x000055b6882088cc in _D3std11concurrency__T4sendTS13unit_threaded6runner2io10ThreadWaitZQBtFSQCsQCr3TidQCcZv (
    _param_1=..., tid=...) at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:627
#12 0x000055b688202e8e in _D13unit_threaded6runner2io12WriterThread6__ctorMFZCQByQBmQBiQBi (this=0x7f60bbc4dd60)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/io.d:180
#13 0x000055b688202d78 in _D13unit_threaded6runner2io12WriterThread3getFNeZ12__dgliteral2MFNaNfZCQCrQCfQCbQCb (
    __capture=0x0)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/io.d:149
#14 0x000055b688202f05 in _D3std11concurrency__T8initOnceS_D13unit_threaded6runner2io12WriterThread3getFNeZ8instanceCQCfQBtQBpQBpZQDeFNcLQvZ12__dgliteral2MFNaNiNfZQBv (__capture=0x7ffdfe776ca0)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2600
#15 0x000055b688202f60 in _D3std11concurrency__T8initOnceS_D13unit_threaded6runner2io12WriterThread3getFNeZ8instanceCQCfQBtQBpQBpZQDeFNcLQvOC4core4sync5mutex5MutexZQBw (mutex=0x7f60bbc3e9c0, init=1738466470756384742076559849385120)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2671
#16 0x000055b688202edf in _D3std11concurrency__T8initOnceS_D13unit_threaded6runner2io12WriterThread3getFNeZ8instanceCQCfQBtQBpQBpZQDeFNcLQvZQy (init=1738466470749006044306347156045824)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2600
#17 0x000055b688202d4d in _D13unit_threaded6runner2io12WriterThread3getFNeZCQBwQBkQBgQBg ()
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/io.d:149
#18 0x000055b6881fc043 in _D13unit_threaded6runner9testsuite9TestSuite6__ctorMFNcxSQCdQBr7options7OptionsxASQDcQCq10reflection8TestDataZSQEfQDtQDpQDi (this=..., testData=..., options=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/testsuite.d:40
#19 0x000055b6881faacd in _D13unit_threaded6runnerQh8runTestsFxSQBkQy7options7OptionsxASQCiQBw10reflection8TestDataZi
    (testData=..., options=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/runner.d:99
#20 0x000055b6881faa3f in _D13unit_threaded6runnerQh8runTestsFAAyaxASQBpQBd10reflection8TestDataZi (testData=...,
    args=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/runner.d:87
#21 0x000055b6881ec803 in _D13unit_threaded6runnerQh__T8runTestsVAyaa12_646c616e67626f742e617070VQBga17_646c616e67626f742e6275677a696c6c61VQCwa18_646c616e67626f742e6275696c646b697465VQEoa13_646c616e67626f742e63726f6eVQFwa15_646c616e67626f742e676974687562VQHia19_646c616e67626f742e6769746875625f617069VQJca19_646c616e67626f742e68636c6f75645f617069VQKwa14_646c616e67626f742e6973737565VQMga21_646c616e67626f742e7363616c657761795f617069VQOea15_646c616e67626f742e7472656c6c6fVQPqa16_646c616e67626f742e74776974746572VQRea14_646c616e67626f742e7574696c73VQSoa17_646c616e67626f742e7761726e696e6773VQ---Type <return> to continue, or q <return> to quit---
Uea8_6275677a696c6c61VQVba9_6275696c646b697465VQWaa8_636f6d6d656e7473VQWxa7_63726f6e6a6f62VQXsa6_6c6162656c73VQYla6_726576696577VQZea6_737461747573VQZxa6_7472656c6c6fVQBAqa7_74776974746572VQBBma5_7574696c73ZQBCoFAQBCkZi (args=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/runner.d:70
#22 0x000055b6881ec758 in D main (args=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/runner.d:40

(gdb) thread 2
[Switching to thread 2 (Thread 0x7f60b9de1700 (LWP 6822))]
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
135	in ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
(gdb) bt
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f60baf9f098 in __GI___pthread_mutex_lock (mutex=0x7f60bbc3e9d8) at ../nptl/pthread_mutex_lock.c:113
#2  0x000055b6883c2ca1 in _D4core4sync5mutex5Mutex__T12lock_nothrowTCQBpQBnQBlQBiZQBdMFNbNiNeZv (this=0x7f60bbc3e9c0)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/druntime/import/core/sync/mutex.di:83
#3  0x000055b6884373fd in core.sync.mutex.Mutex.lock() ()
#4  0x000055b688441cb4 in _d_monitorenter ()
#5  0x000055b688428949 in _D3std11concurrency__T8initOnceS_D4stdx9allocator17_processAllocatorOCQBkQBi16ISharedAllocatorZQCvFNcNfLOQBkOC4core4sync5mutex5MutexZOQCn (mutex=0x7f60bbc3e9c0, init=1738466512284949379407839236056784)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2667
#6  0x000055b6884288e3 in _D3std11concurrency__T8initOnceS_D4stdx9allocator17_processAllocatorOCQBkQBi16ISharedAllocatorZQCvFNcLOQBiZOQBn (init=1738466512276390090017584592191488)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2600
#7  0x000055b688428711 in _D4stdx9allocator16processAllocatorFNdZOCQBnQBl16ISharedAllocator ()
    at /root/.dub/packages/stdx-allocator-2.77.5/stdx-allocator/source/stdx/allocator/package.d:591
#8  0x000055b6883a2bb5 in _D4vibe4core4sync11ManualEvent__T19acquireThreadWaiterTDFNbNfMCQCjQChQCf__T17ThreadLocalWaiterVbi1ZQyZvZQCtMOFNfMQCgZ9__lambda4MFNbNeZv (__capture=0x7f60b9dde790)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1194
#9  0x000055b6883a2a9d in _D4vibe4core4sync11ManualEvent__T19acquireThreadWaiterTDFNbNfMCQCjQChQCf__T17ThreadLocalWaiterVbi1ZQyZvZQCtMOFNbNfMQCiZv (this=..., del=...)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1200
#10 0x000055b6883a1cf6 in _D4vibe4core4sync11ManualEvent__T12doWaitSharedVbi0ZQtMOFNbNfSQCd4time8DurationiZi (
    this=..., emit_count=0, timeout=...)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1148
#11 0x000055b688396ec3 in vibe.core.sync.ManualEvent.waitUninterruptible(int) shared (this=..., emit_count=0)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1124
#12 0x000055b68839cb8d in _D4vibe4core4sync__T17TaskConditionImplVbi0TCQBmQBk5mutex5MutexZQBs4waitMFNbNeZv (this=...)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:1688
#13 0x000055b688396281 in vibe.core.sync.TaskCondition.wait() (this=0x7f60bbc4fd00)
    at /root/.dub/packages/vibe-core-1.9.0/vibe-core/source/vibe/core/sync.d:682
#14 0x000055b68820579d in _D3std11concurrency10MessageBox__T3getTDFAyaSQBrQBq3TidZvTDFS13unit_threaded6runner2io10ThreadWaitZvTDFNaNbNiNfSQBzQBnQBj12ThreadFinishZvTDFSQDcQCqQCm5FlushQEiZvTDFNaNbNiNfCQGpQGo15OwnerTerminatedZvZQGjMFMQGkMQFvMQEiMQDbMQChZb (this=0x7f60bbc56160, _param_4=..., _param_3=..., _param_2=..., _param_1=..., _param_0=...)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:2233
#15 0x000055b68820564a in _D3std11concurrency__T7receiveTDFAyaSQBjQBi3TidZvTDFS13unit_threaded6runner2io10ThreadWaitZvTDFNaNbNiNfSQBzQBnQBj12ThreadFinishZvTDFSQDcQCqQCm5FlushQEiZvTDFNaNbNiNfCQGhQGg15OwnerTerminatedZvZQGnFQGiQFsQEeQCwQCbZv (_param_4=..., _param_3=..., _param_2=..., _param_1=..., _param_0=...)
    at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:694
#16 0x000055b6882044cf in _D13unit_threaded6runner2io__T12threadWriterS_D3std5stdio__T10makeGlobalVEQBbQBa13StdFileHandlea22_636f72652e737464632e737464696f2e7374646f7574ZQDgFNbNcNdNiZSQEhQEg4FileS_DQEvQEu__TQErVQEia22_636f72652e737464632e737464696f2e737464657272ZQGvFNbNcNdNiZQDpZQIqFSQIe11concurrency3TidZv (tid=...)
    at /root/.dub/packages/unit-threaded-0.10.8/unit-threaded/subpackages/runner/source/unit_threaded/runner/io.d:291
#17 0x000055b688208890 in _D3std11concurrency__T6_spawnTPFSQBfQBe3TidZvTQoZQBbFbQyQyZ4execMFZv (
    __capture=0x7f60bbc42270) at /root/dlang/dmd-2.092.0/linux/bin64/../../src/phobos/std/concurrency.d:556
#18 0x000055b688438e76 in core.thread.osthread.Thread.run() ()
#19 0x000055b68849cd02 in thread_entryPoint ()
#20 0x00007f60baf9c6db in start_thread (arg=0x7f60b9de1700) at pthread_create.c:463
#21 0x00007f60ba30388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95