Metals: Metals through VS Code reproducibly stops working

[jdegoes]

Describe the bug

Metals stops compiling ZIO after anywhere from a few hours to a few days of continuous use.

To Reproduce

Steps to reproduce the behavior:

1. Clone https://github.com/zio/zio
2. Edit the files repeatedly
3. Engage in Git-related interactions (optional?)
4. Re-import the SBT project when prompted (optional?)
5. Metals will eventually stop compiling, sometimes with old (no longer relevant) errors reported

I have observed this to happen with smaller repositories, as well as larger ones like ZIO.

To fix this problem, it is often necessary to:

1. Shut down VS Code entirely
2. Kill all processes listed with JPS
3. rm -rf .bloop .metals
4. Relaunch VS Code and reimport the SBT build

Sometimes, only some of these steps are necessary to restore a working environment.

Expected behavior

Ideally, Metals should continue to work for hours and days of use at a time.

Screenshots

An example of the kind of error messages produced by Metals:

ERROR code navigation does not work for the file '/Users/john/Documents/git/scalaz-zio-alpha/core/shared/src/main/scala/zio/internal/FiberContext.scala' because the build target coreJVM is being compiled. Wait until compilation is finished and try again.

In the above, no amount of waiting solves the problem:

INFO  Deduplicating compilation of stacktracerJS from bsp client 'Metals 0.8.3' (since 2h 3m 45.77s)

This is not always the error produced (other times there are other errors).

2020-04-18 09:57 java[44509] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-21)

It's not clear if these errors have anything to do with the issue.

Installation:

• Operating system: macOS
• Editor: Visual Studio Code
• Metals extension version: v1.8.6

Additional context

Search terms

[ColOfAbRiX]

I'm experiencing a very similar problem and I was about to create an issue myself.

What I see is a general freeze of the features of metals like the autocompletion not working, the errors not updating while I can compile the code succesfully from SBT console. I do not have a list of steps to reproduce the issue because it seems it happens randomly and I can solve it by removing .metals and .bloop directories.

For me this issue started with the upgrade from 0.8.3 to 0.8.4

Installation:

• Windows 10
• VS Code 1.44
• Metals 0.8.4

Screenshot:

[jdegoes]

/cc @adamgfraser, who I know has had this issue as well.

[tgodzik]

Thanks for reporting! Fixing this is certainly a priority, since we did notice it happening more frequently.

@ColOfAbRiX You can revert the server version to 0.8.3 by hand for now until we manage to fix it.

[adpi2]

I had some recurring problem with Metals as well and I remember that stopping the Bloop service and restarting it with bloop server has helped me at some point.

I believe that the incremental compilation in Bloop with Metals is a serious candidate. I would like to reproduce it and investigate further.

@jdegoes could you please share with us:

• your version of the sbt-bloop plugin, in your project/metals.sbt file
• the output of bloop about on your machine

[tgodzik]

@adpi2 I was looking at this during this week and the current action plan I came up with is:

• we've noticed 2 issues in Bloop connected to deduplication that will be fixed soon
• add a clean option inside Metals, which might help with problematic scenarios
• better detect disconnections: fix https://github.com/scalameta/metals/issues/1354
• MAYBE: reconenct to bloop on a regular basis

[davidpdrsn]

Sorry if this isn't related but I often get this:

❯ bloop test shared -o dk.undo.factories.FactoriesSpec
Deduplicating compilation of shared-test from cli client 'bloop-cli' (since 2.274s)
[E] /Users/david/dev/major/backend-scala/.bloop/shared/bloop-bsp-clients-classes/bloop-cli/dk/undo/cronductor/TestJob.class

Nothing happens after that. Running the command again gives the same output. rm -rf .bloop .metals and reimport is the only solution I've found.

[tgodzik]

We've already done some improvements and I personally haven't encountered any hanging compilations on 0.9.0 version. Please do report if anything like that happens again, otherwise I will close this issue in the next two weeks.

@davidpdrsn I think this might have something to do with running CLI and Metals at the same time. Could you run compile --verbose if you encounter this next time? We should most likely report this in Bloop itself. This might have something to do with known zinc issues and it doesn't look related to the hanging compilations.

rm -rf .bloop .metals and reimport is the only solution I've found.

As a current workaround you could try to do bloop clean or alternatively removing just the directories inside .bloop + reload window as the nuclear option. You will not need to reimport the build this way, because the json files should still be in place.

[davidpdrsn]

I am on version 0.9.0 and still getting these errors. This is the output of compile --verbose:

❯ bloop compile undoservice --verbose
[D] Loading workspace settings from bloop.settings.json
[D] Computing sources and classpath hashes for UndoUtils
[D] Computing sources and classpath hashes for undodb
[D] Computing sources and classpath hashes for awsSqs
[D] Computing sources and classpath hashes for zioSttp
[D] Computing sources and classpath hashes for Mailgun
[D] Computing sources and classpath hashes for apiclient
[D] Scheduling compilation for UndoUtils...
[D] Using successful result for UndoUtils associated with /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-nLCo3rs7Ro2gBkdlme1GrA==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-nLCo3rs7Ro2gBkdlme1GrA== to 2
[D] Scheduling compilation for Mailgun...
[D] Scheduling compilation for zioSttp...
[D] Scheduling compilation for undodb...
[D] Using successful result for zioSttp associated with /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-trtjnEE4QpaBuSpMI2CthA==
[D] Scheduling compilation for awsSqs...
[D] Scheduling compilation for apiclient...
[D] Using successful result for Mailgun associated with /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-CXU_7lwwQ9SPOKwgMkka_A==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-CXU_7lwwQ9SPOKwgMkka_A== to 2
[D] Using successful result for apiclient associated with /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==--WD5-DRFQLKTzYzXBhr5aQ==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==--WD5-DRFQLKTzYzXBhr5aQ== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Using successful result for awsSqs associated with /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hpWaVZzIS6ylD550YuB6sw==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-trtjnEE4QpaBuSpMI2CthA== to 2
[D] Using successful result for undodb associated with /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hs6lLjERTLWUQFGabqS_WA==
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hpWaVZzIS6ylD550YuB6sw== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-bsp-clients-classes/bloop-cli
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-nLCo3rs7Ro2gBkdlme1GrA==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hs6lLjERTLWUQFGabqS_WA== to 2
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-bsp-clients-classes/bloop-cli
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-internal-classes/bloop-cli-nsWIRBspT9W71YBUG0Ljtg==
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-bsp-clients-classes/bloop-cli
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-bsp-clients-classes/bloop-cli
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hpWaVZzIS6ylD550YuB6sw==
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==--WD5-DRFQLKTzYzXBhr5aQ==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-internal-classes/bloop-cli-WkO8lCyvSjqEac7kA4vSxQ==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-internal-classes/bloop-cli-FjIFyFE8Tpe2KK2xlBRT-Q==
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-bsp-clients-classes/bloop-cli
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-CXU_7lwwQ9SPOKwgMkka_A==
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-trtjnEE4QpaBuSpMI2CthA==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-internal-classes/bloop-cli--VU-ftdMTR2bUGaO7csbjg==
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-bsp-clients-classes/bloop-cli
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-internal-classes/bloop-cli-D-dLlqZBQ2ma8dHZtGb8Hg==
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hs6lLjERTLWUQFGabqS_WA==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-internal-classes/bloop-cli-WuuofR3ARwi4exRpjrHy6A==
[D] No changes
[D] Recording new last successful request for UndoUtils associated with /Users/david/dev/major/backend-scala/.bloop/UndoUtils/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-nLCo3rs7Ro2gBkdlme1GrA==
[D] Computing sources and classpath hashes for awsS3
[D] No changes
[D] Computing sources and classpath hashes for awsSns
[D] No changes
[D] No changes
[D] No changes
[D] No changes
[D] Recording new last successful request for apiclient associated with /Users/david/dev/major/backend-scala/.bloop/apiclient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==--WD5-DRFQLKTzYzXBhr5aQ==
[D] Computing sources and classpath hashes for CustomerIO
Deduplicating compilation of awsSns from cli client 'bloop-cli' (since 34.495s)
[D] Computing sources and classpath hashes for UndoGeoCoding
Deduplicating compilation of awsS3 from cli client 'bloop-cli' (since 34.495s)
[D] Recording new last successful request for Mailgun associated with /Users/david/dev/major/backend-scala/.bloop/Mailgun/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-CXU_7lwwQ9SPOKwgMkka_A==
[D] Computing sources and classpath hashes for undozio
[D] Computing sources and classpath hashes for awsS3
[D] Scheduling compilation for awsS3...
[D] Using successful result for awsS3 associated with /Users/david/dev/major/backend-scala/.bloop/awsS3/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-BQPtrK02Qcqfxr3X5PivWw==
[D] Computing sources and classpath hashes for awsSns
[D] Scheduling compilation for awsSns...
[D] Using successful result for awsSns associated with /Users/david/dev/major/backend-scala/.bloop/awsSns/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-b8Fx398tRo2iia_lX_baOw==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/awsSns/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-b8Fx398tRo2iia_lX_baOw== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/awsSns/bloop-bsp-clients-classes/bloop-cli
Deduplicating compilation of UndoGeoCoding from cli client 'bloop-cli' (since 34.498s)[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/awsSns/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-b8Fx398tRo2iia_lX_baOw==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/awsSns/bloop-internal-classes/bloop-cli-y3cqtSX6RGGJFfHJ_ZLV0g==
[D] No changes

[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/awsS3/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-BQPtrK02Qcqfxr3X5PivWw== to 2
Deduplicating compilation of CustomerIO from cli client 'bloop-cli' (since 34.499s)
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/awsS3/bloop-bsp-clients-classes/bloop-cli
[D] Computing sources and classpath hashes for CustomerIO
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/awsS3/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-BQPtrK02Qcqfxr3X5PivWw==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/awsS3/bloop-internal-classes/bloop-cli-8tEtUT9CR8q-3h-ZSxP1_Q==
[D] Computing sources and classpath hashes for UndoGeoCoding
[D] Scheduling compilation for UndoGeoCoding...
[D] Using successful result for UndoGeoCoding associated with /Users/david/dev/major/backend-scala/.bloop/UndoGeoCoding/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-I1jLlKW0Sv6GEEDmiVyyEg==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/UndoGeoCoding/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-I1jLlKW0Sv6GEEDmiVyyEg== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/UndoGeoCoding/bloop-bsp-clients-classes/bloop-cli
[D] No changes
[D] Scheduling compilation for CustomerIO...
[D] Using successful result for CustomerIO associated with /Users/david/dev/major/backend-scala/.bloop/CustomerIO/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-l25OaCjVSp6J579D3iLtkA==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/CustomerIO/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-l25OaCjVSp6J579D3iLtkA== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/UndoGeoCoding/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-I1jLlKW0Sv6GEEDmiVyyEg==
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/CustomerIO/bloop-bsp-clients-classes/bloop-cli
[D] Scheduling compilation for undozio...
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/CustomerIO/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-l25OaCjVSp6J579D3iLtkA==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/CustomerIO/bloop-internal-classes/bloop-cli-jKqEJ_hhTPyMXgKznNY8PQ==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/UndoGeoCoding/bloop-internal-classes/bloop-cli-BvtTow61StK725isxSZg9g==
[D] No changes
[D] Using successful result for undozio associated with /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-lnMrgSLwSuaooYmSFXduUw==
[D] No changes
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-lnMrgSLwSuaooYmSFXduUw== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-bsp-clients-classes/bloop-cli
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-lnMrgSLwSuaooYmSFXduUw==
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-internal-classes/bloop-cli-WT2z6DkvQ7CMMYcbQ27HPg==
[D] No changes
[D] Recording new last successful request for undozio associated with /Users/david/dev/major/backend-scala/.bloop/undozio/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-lnMrgSLwSuaooYmSFXduUw==
[D] Recording new last successful request for zioSttp associated with /Users/david/dev/major/backend-scala/.bloop/zioSttp/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-trtjnEE4QpaBuSpMI2CthA==
[D] Computing sources and classpath hashes for gatewayApiClient
[D] Computing sources and classpath hashes for branch
[D] Scheduling compilation for branch...
[D] Using successful result for branch associated with /Users/david/dev/major/backend-scala/.bloop/branch/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-MiGg_jguR-SbYynX2REi_A==
Deduplicating compilation of gatewayApiClient from cli client 'bloop-cli' (since 34.507s)
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/branch/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-MiGg_jguR-SbYynX2REi_A== to 2
[D] Computing sources and classpath hashes for gatewayApiClient
[D] Scheduling compilation for gatewayApiClient...
[D] Using successful result for gatewayApiClient associated with /Users/david/dev/major/backend-scala/.bloop/gatewayApiClient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-J8t__TUDTOC79CZvga9LNg==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/gatewayApiClient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-J8t__TUDTOC79CZvga9LNg== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/gatewayApiClient/bloop-bsp-clients-classes/bloop-cli
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/gatewayApiClient/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-J8t__TUDTOC79CZvga9LNg==
[D] External classes directory /Users/david/dev/major/backend-scala/.bloop/branch/bloop-bsp-clients-classes/bloop-cli
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/gatewayApiClient/bloop-internal-classes/bloop-cli-n3LZ2KsqQIGooNCgsaTAJQ==
[D] Read-only classes directory /Users/david/dev/major/backend-scala/.bloop/branch/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-MiGg_jguR-SbYynX2REi_A==
[D] No changes
[D] New rw classes directory /Users/david/dev/major/backend-scala/.bloop/branch/bloop-internal-classes/bloop-cli-qozNmLs0S8Ks38jUqVVcVw==
[D] No changes
[D] Recording new last successful request for awsSqs associated with /Users/david/dev/major/backend-scala/.bloop/awsSqs/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hpWaVZzIS6ylD550YuB6sw==
[D] Recording new last successful request for undodb associated with /Users/david/dev/major/backend-scala/.bloop/undodb/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-hs6lLjERTLWUQFGabqS_WA==
[D] Recording new last successful request for branch associated with /Users/david/dev/major/backend-scala/.bloop/branch/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-MiGg_jguR-SbYynX2REi_A==
[D] Computing sources and classpath hashes for shared
Deduplicating compilation of shared from cli client 'bloop-cli' (since 34.517s)
[D] Computing sources and classpath hashes for shared
[D] Scheduling compilation for shared...
[D] Using successful result for shared associated with /Users/david/dev/major/backend-scala/.bloop/shared/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-2676db-pRUOhE_OuUE4_tA==
[D] Increasing counter for /Users/david/dev/major/backend-scala/.bloop/shared/bloop-internal-classes/classes-Metals-0bYetVRkRGOw2tfOWYQY8Q==-2676db-pRUOhE_OuUE4_tA== to 2
[D] Disabled compiler plugin classloading, unsupported in 2.12.1
[D] Elapsed: 34.821734 ms
[E] /Users/david/dev/major/backend-scala/.bloop/shared/bloop-bsp-clients-classes/bloop-cli/dk/undo/cronductor/TestJob$.class
[T] java.nio.file.FileAlreadyExistsException: /Users/david/dev/major/backend-scala/.bloop/shared/bloop-bsp-clients-classes/bloop-cli/dk/undo/cronductor/TestJob$.class
[T]     sun.nio.fs.UnixException.translateToIOException(UnixException.java:88)
[T]     sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
[T]     sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
[T]     sun.nio.fs.UnixCopyFile.copyFile(UnixCopyFile.java:243)
[T]     sun.nio.fs.UnixCopyFile.copy(UnixCopyFile.java:581)
[T]     sun.nio.fs.UnixFileSystemProvider.copy(UnixFileSystemProvider.java:253)
[T]     java.nio.file.Files.copy(Files.java:1274)
[T]     bloop.io.ParallelOps$.copy$1(ParallelOps.scala:167)
[T]     bloop.io.ParallelOps$.$anonfun$copyDirectories$7(ParallelOps.scala:200)
[T]     scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[T]     monix.eval.internal.TaskRunLoop$.loop$2(TaskRunLoop.scala:321)
[T]     monix.eval.internal.TaskRunLoop$.startAsFuture(TaskRunLoop.scala:384)
[T]     monix.eval.Task.runAsync(Task.scala:117)
[T]     monix.eval.Task.runSyncMaybe(Task.scala:134)
[T]     monix.eval.Task.$anonfun$coeval$1(Task.scala:154)
[T]     monix.eval.Coeval$Always.apply(Coeval.scala:666)
[T]     monix.eval.Coeval.value(Coeval.scala:76)
[T]     bloop.io.ParallelOps$.$anonfun$copyDirectories$6(ParallelOps.scala:226)
[T]     monix.reactive.internal.consumers.ForeachAsyncConsumer$$anon$1.onNext(ForeachAsyncConsumer.scala:41)
[T]     monix.reactive.internal.consumers.LoadBalanceConsumer$$anon$2.$anonfun$signalNext$1(LoadBalanceConsumer.scala:219)
[T]     java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[T]     java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[T]     java.lang.Thread.run(Thread.java:748)

Just let me know if this is a separate issue from what OP is seeing and if I should make a new issue.

[tgodzik]

@davidpdrsn Looks like a separate issue, would you mind reporting it in scalacenter/bloop ?

[davidpdrsn]

Yes will do 👍

[tgodzik]

Looks like issue was fixed in Bloop. Haven't encountered it since the last release, but feel free to report if anything like this happens again.