x/tools/gopls: panic in OriginMethod

[mrtroian]

gopls version: v0.12.4 (go1.20.5)
gopls flags:
update flags: proxy
extension version: 0.39.0
go version: 1.20.5
environment: Visual Studio Code darwin
initialization error: undefined
issue timestamp: Thu, 29 Jun 2023 19:06:21 GMT
restart history:
Thu, 29 Jun 2023 19:06:09 GMT: activation (enabled: true)

ATTENTION: PLEASE PROVIDE THE DETAILS REQUESTED BELOW.

Describe what you observed.

gopls server started crashing after update. It crashes right after launching VSCode or installing Go extension.

I've tried:

• downgrade to previous release of gopls
• downgrade to previous of that
• update go (1.19.8->1.20.5)
• Go extension nightly version
• Update/Reinstall VSCode
• reinstall gopls via CLI
• Checked out other issues on Github, a lot of crashes, nothing that looks like my case

panic: interface conversion: types.Object is nil, not *types.Func

goroutine 5265 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x14009adc240)
	  common.go:128  0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x14009a59f00, 0x14009adc240)
	  methodsets.go:248  0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x105076dd0, 0x14007dd6d90}, 0x140041dfb08)
	  methodsets.go:309  0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x140041dfbe0, 0x140037f9940, 0x14009a8c640)
	  methodsets.go:261  0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	  methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	  pkg.go:74  0x40
sync.(*Once).doSlow(0x140040e1ca8%3F, 0x1044a7b10%3F)
	  once.go:74  0x104
sync.(*Once).Do(...)
	  once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x14007db60f0%3F)
	  pkg.go:73  0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	  check.go:649  0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	  check.go:646  0x228
[Error - 22:06:19] 

OPTIONAL: If you would like to share more information, you can attach your complete gopls logs.

NOTE: THESE MAY CONTAIN SENSITIVE INFORMATION ABOUT YOUR CODEBASE.
DO NOT SHARE LOGS IF YOU ARE WORKING IN A PRIVATE REPOSITORY.

<OPTIONAL: ATTACH LOGS HERE>

[mrtroian]

I would be grateful for a tip on how to make this work on any version (except for switching to vim).

[mrtroian]

To my surprise, only my "favourite" project makes gopls panic. I've created hello-world app, go.mod, go.work and everything seems fine in that window.

gopls server output (the one that's panicking):

[Info  - 22:28:13] 2023/06/29 22:28:13 go info for /Users/mr.troian/path/to/project
(go dir /Users/mr.troian/path/to/project)
(go version go version go1.20.5 darwin/arm64)
(valid build configuration = true)
(build flags: [])
(selected go env: [GO111MODULE=, GOCACHE=/Users/mr.troian/Library/Caches/go-build, GOFLAGS=, GOMODCACHE=/Users/mr.troian/go/pkg/mod, GOPATH=/Users/mr.troian/go, GOPRIVATE=github.com/workstuff/*, GOROOT=/Users/mr.troian/sdk/go1.20.5, GOWORK=/Users/mr.troian/path/to/project/go.work])


[Info  - 22:28:14] 2023/06/29 22:28:14 go/packages.Load golang/vscode-go#1
	snapshot=0
	directory=file:///Users/mr.troian/path/to/project
	query=[/Users/mr.troian/path/to/project/blocks/alpha/... /Users/mr.troian/path/to/project/omega/... /Users/mr.troian/path/to/project/data/tools/go/... builtin]
	packages=180

[Info  - 22:28:14] 2023/06/29 22:28:14 go/packages.Load golang/vscode-go#1: updating metadata for 599 packages

[Error - 22:28:15] Request textDocument/semanticTokens/range failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:15] Request textDocument/semanticTokens/full failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:16] 2023/06/29 22:28:16 tidy: diagnosing file:///Users/mr.troian/path/to/project/data/tools/go/go.mod: err: exit status 1: stderr: go: finding module for package github.com/sourcegraph/conc/pool
downloader imports
	github.com/sourcegraph/conc/pool: cannot find module providing package github.com/sourcegraph/conc/pool: module lookup disabled by GOPROXY=off


panic: interface conversion: types.Object is nil, not *types.Func

goroutine 5398 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x1400a90f9e0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools@v0.10.1-0.20230622221742-0622ad2359a7/internal/typeparams/common.go:128 +0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x1400acb3040, 0x1400a90f9e0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:248 +0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x102e9edd0, 0x14009f977a0}, 0x14004d51b08)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:309 +0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x14004d51be0, 0x14004716d40, 0x14009fdea00)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:261 +0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:74 +0x40
sync.(*Once).doSlow(0x14004d51f00?, 0x103451680?)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:74 +0x104
sync.(*Once).Do(...)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x140078cc2d0?)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:73 +0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:649 +0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:646 +0x228
[Info  - 22:28:16] 
true
[Info  - 22:28:16] 2023/06/29 22:28:16 go info for /Users/mr.troian/path/to/project
(go dir /Users/mr.troian/path/to/project)
(go version go version go1.20.5 darwin/arm64)
(valid build configuration = true)
(build flags: [])
(selected go env: [GO111MODULE=, GOCACHE=/Users/mr.troian/Library/Caches/go-build, GOFLAGS=, GOMODCACHE=/Users/mr.troian/go/pkg/mod, GOPATH=/Users/mr.troian/go, GOPRIVATE=github.com/workstuff/*, GOROOT=/Users/mr.troian/sdk/go1.20.5, GOWORK=/Users/mr.troian/path/to/project/go.work])


[Info  - 22:28:16] 2023/06/29 22:28:16 go/packages.Load golang/vscode-go#1
	snapshot=0
	directory=file:///Users/mr.troian/path/to/project
	query=[/Users/mr.troian/path/to/project/blocks/alpha/... /Users/mr.troian/path/to/project/omega/... /Users/mr.troian/path/to/project/data/tools/go/... builtin]
	packages=180

[Info  - 22:28:16] 2023/06/29 22:28:16 go/packages.Load golang/vscode-go#1: updating metadata for 599 packages

[Error - 22:28:16] Request textDocument/semanticTokens/range failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:16] Request textDocument/semanticTokens/full failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:18] 2023/06/29 22:28:18 tidy: diagnosing file:///Users/mr.troian/path/to/project/data/tools/go/go.mod: err: exit status 1: stderr: go: finding module for package github.com/sourcegraph/conc/pool
downloader imports
	github.com/sourcegraph/conc/pool: cannot find module providing package github.com/sourcegraph/conc/pool: module lookup disabled by GOPROXY=off


panic: interface conversion: types.Object is nil, not *types.Func

goroutine 5177 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x14009fdf140)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools@v0.10.1-0.20230622221742-0622ad2359a7/internal/typeparams/common.go:128 +0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x1400c21ea40, 0x14009fdf140)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:248 +0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x100f4add0, 0x14009fce460}, 0x140045d3b08)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:309 +0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x140045d3be0, 0x14005386080, 0x1400964be50)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:261 +0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:74 +0x40
sync.(*Once).doSlow(0x140045d3f00?, 0x1014fd680?)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:74 +0x104
sync.(*Once).Do(...)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x14009fdc000?)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:73 +0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:649 +0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:646 +0x228
[Info  - 22:28:18] 
true
[Info  - 22:28:18] 2023/06/29 22:28:18 go info for /Users/mr.troian/path/to/project
(go dir /Users/mr.troian/path/to/project)
(go version go version go1.20.5 darwin/arm64)
(valid build configuration = true)
(build flags: [])
(selected go env: [GO111MODULE=, GOCACHE=/Users/mr.troian/Library/Caches/go-build, GOFLAGS=, GOMODCACHE=/Users/mr.troian/go/pkg/mod, GOPATH=/Users/mr.troian/go, GOPRIVATE=github.com/workstuff/*, GOROOT=/Users/mr.troian/sdk/go1.20.5, GOWORK=/Users/mr.troian/path/to/project/go.work])


[Info  - 22:28:18] 2023/06/29 22:28:18 go/packages.Load golang/vscode-go#1
	snapshot=0
	directory=file:///Users/mr.troian/path/to/project
	query=[/Users/mr.troian/path/to/project/blocks/alpha/... /Users/mr.troian/path/to/project/omega/... /Users/mr.troian/path/to/project/data/tools/go/... builtin]
	packages=180

[Info  - 22:28:18] 2023/06/29 22:28:18 go/packages.Load golang/vscode-go#1: updating metadata for 599 packages

[Error - 22:28:18] Request textDocument/semanticTokens/range failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:18] Request textDocument/semanticTokens/full failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:19] 2023/06/29 22:28:19 tidy: diagnosing file:///Users/mr.troian/path/to/project/data/tools/go/go.mod: err: exit status 1: stderr: go: finding module for package github.com/sourcegraph/conc/pool
downloader imports
	github.com/sourcegraph/conc/pool: cannot find module providing package github.com/sourcegraph/conc/pool: module lookup disabled by GOPROXY=off


panic: interface conversion: types.Object is nil, not *types.Func

goroutine 5320 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x140092def00)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools@v0.10.1-0.20230622221742-0622ad2359a7/internal/typeparams/common.go:128 +0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x14009bc2740, 0x140092def00)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:248 +0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x10140edd0, 0x14007483260}, 0x14004f6db08)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:309 +0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x14004f6dbe0, 0x1400770fd00, 0x14007c4cfa0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:261 +0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:74 +0x40
sync.(*Once).doSlow(0x1?, 0x140055334a0?)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:74 +0x104
sync.(*Once).Do(...)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x14004f18960?)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:73 +0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:649 +0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:646 +0x228
[Info  - 22:28:19] 
true
[Info  - 22:28:20] 2023/06/29 22:28:20 go info for /Users/mr.troian/path/to/project
(go dir /Users/mr.troian/path/to/project)
(go version go version go1.20.5 darwin/arm64)
(valid build configuration = true)
(build flags: [])
(selected go env: [GO111MODULE=, GOCACHE=/Users/mr.troian/Library/Caches/go-build, GOFLAGS=, GOMODCACHE=/Users/mr.troian/go/pkg/mod, GOPATH=/Users/mr.troian/go, GOPRIVATE=github.com/workstuff/*, GOROOT=/Users/mr.troian/sdk/go1.20.5, GOWORK=/Users/mr.troian/path/to/project/go.work])


[Info  - 22:28:20] 2023/06/29 22:28:20 go/packages.Load golang/vscode-go#1
	snapshot=0
	directory=file:///Users/mr.troian/path/to/project
	query=[/Users/mr.troian/path/to/project/blocks/alpha/... /Users/mr.troian/path/to/project/omega/... /Users/mr.troian/path/to/project/data/tools/go/... builtin]
	packages=180

[Info  - 22:28:20] 2023/06/29 22:28:20 go/packages.Load golang/vscode-go#1: updating metadata for 599 packages

[Error - 22:28:20] Request textDocument/semanticTokens/range failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:20] Request textDocument/semanticTokens/full failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:21] 2023/06/29 22:28:21 tidy: diagnosing file:///Users/mr.troian/path/to/project/data/tools/go/go.mod: err: exit status 1: stderr: go: finding module for package github.com/sourcegraph/conc/pool
downloader imports
	github.com/sourcegraph/conc/pool: cannot find module providing package github.com/sourcegraph/conc/pool: module lookup disabled by GOPROXY=off


panic: interface conversion: types.Object is nil, not *types.Func

goroutine 4783 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x14005b1f1a0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools@v0.10.1-0.20230622221742-0622ad2359a7/internal/typeparams/common.go:128 +0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x14006b9c3c0, 0x14005b1f1a0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:248 +0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x102d7add0, 0x140079d3e30}, 0x14004895b08)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:309 +0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x14004895be0, 0x14004afaf00, 0x14007992f00)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:261 +0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:74 +0x40
sync.(*Once).doSlow(0x140003a2ca8?, 0x1021abb10?)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:74 +0x104
sync.(*Once).Do(...)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x140079961e0?)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:73 +0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:649 +0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:646 +0x228
[Info  - 22:28:21] 
true
[Info  - 22:28:21] 2023/06/29 22:28:21 go info for /Users/mr.troian/path/to/project
(go dir /Users/mr.troian/path/to/project)
(go version go version go1.20.5 darwin/arm64)
(valid build configuration = true)
(build flags: [])
(selected go env: [GO111MODULE=, GOCACHE=/Users/mr.troian/Library/Caches/go-build, GOFLAGS=, GOMODCACHE=/Users/mr.troian/go/pkg/mod, GOPATH=/Users/mr.troian/go, GOPRIVATE=github.com/workstuff/*, GOROOT=/Users/mr.troian/sdk/go1.20.5, GOWORK=/Users/mr.troian/path/to/project/go.work])


[Info  - 22:28:22] 2023/06/29 22:28:22 go/packages.Load golang/vscode-go#1
	snapshot=0
	directory=file:///Users/mr.troian/path/to/project
	query=[/Users/mr.troian/path/to/project/blocks/alpha/... /Users/mr.troian/path/to/project/omega/... /Users/mr.troian/path/to/project/data/tools/go/... builtin]
	packages=180

[Info  - 22:28:22] 2023/06/29 22:28:22 go/packages.Load golang/vscode-go#1: updating metadata for 599 packages

[Error - 22:28:22] Request textDocument/semanticTokens/range failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:22] Request textDocument/semanticTokens/full failed.
  Message: semantictokens are disabled
  Code: 0 
[Error - 22:28:23] 2023/06/29 22:28:23 tidy: diagnosing file:///Users/mr.troian/path/to/project/data/tools/go/go.mod: err: exit status 1: stderr: go: finding module for package github.com/sourcegraph/conc/pool
downloader imports
	github.com/sourcegraph/conc/pool: cannot find module providing package github.com/sourcegraph/conc/pool: module lookup disabled by GOPROXY=off


panic: interface conversion: types.Object is nil, not *types.Func

goroutine 4954 [running]:
golang.org/x/tools/internal/typeparams.OriginMethod(0x14009922d20)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools@v0.10.1-0.20230622221742-0622ad2359a7/internal/typeparams/common.go:128 +0x258
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build.func2(0x1400a042980, 0x14009922d20)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:248 +0x1c4
golang.org/x/tools/gopls/internal/lsp/source/methodsets.methodSetInfo({0x103362dd0, 0x14006e1b570}, 0x14004b9db08)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:309 +0x1f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.(*indexBuilder).build(0x14004b9dbe0, 0x14002046e80, 0x14006e05bd0)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:261 +0x4f0
golang.org/x/tools/gopls/internal/lsp/source/methodsets.NewIndex(...)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/source/methodsets/methodsets.go:98
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:74 +0x40
sync.(*Once).doSlow(0x14000081ca8?, 0x102793b10?)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:74 +0x104
sync.(*Once).Do(...)
	/Users/mr.troian/sdk/go1.20.5/src/sync/once.go:65
golang.org/x/tools/gopls/internal/lsp/cache.(*syntaxPackage).methodsets(0x14007e3e5a0?)
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/pkg.go:73 +0x50
golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage.func1()
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:649 +0xe4
created by golang.org/x/tools/gopls/internal/lsp/cache.(*typeCheckBatch).checkPackage
	/Users/mr.troian/go/pkg/mod/golang.org/x/tools/gopls@v0.12.4/internal/lsp/cache/check.go:646 +0x228
[Error - 22:28:23] Connection to server got closed. Server will not be restarted.

[findleyr]

Thank you for the stack trace. Transferring to the gopls issue tracker.

I'm not quite sure how this panic could be reached: it indicates a bug in either the type checker or importer. Is your project open-source?

We can put in a workaround for the crash, but it would be unsatisfying if we didn't understand how it is reached.

[gopherbot]

Change https://go.dev/cl/508795 mentions this issue: internal/typeparams: temporarily avoid a panic in OriginMethod

[findleyr]

The CL above should make this panic more useful. Could you please build gopls @ master, and provide us the improved panic?

git clone https://go.googlesource.com/tools
cd tools/gopls
go install

Thank you!