Issue: "panic: reflect: call of reflect.Value.Type on zero Value"

[jdpipe]

After following the "Alternative Installation" instructions for Homebrew on Linux on Ubuntu 20.04, without any use of sudo. I then ran brew install act without errors. However, when I then attempted to run act, I got errors:

$ act
panic: reflect: call of reflect.Value.Type on zero Value

goroutine 1 [running]:
reflect.Value.Type(0x0, 0x0, 0x0, 0x4f4efa, 0xc0001201e0)
	/home/linuxbrew/.linuxbrew/Cellar/go/1.16.6/libexec/src/reflect/value.go:1908 +0x189
github.com/nektos/act/pkg/model.(*Job).Matrix(0xc000178900, 0x0)
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/pkg/model/workflow.go:178 +0xd7
github.com/nektos/act/pkg/model.(*Job).GetMatrixes(0xc000178900, 0xc000113420, 0x5, 0xc000178900)
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/pkg/model/workflow.go:200 +0x76
github.com/nektos/act/pkg/runner.(*runnerImpl).NewPlanExecutor(0xc0004a80c0, 0xc000117de8, 0x5)
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/pkg/runner/runner.go:119 +0x685
github.com/nektos/act/cmd.newRunCommand.func1(0xc000118000, 0xc0001242a0, 0x0, 0x6, 0x0, 0x0)
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/cmd/root.go:290 +0xc5f
github.com/spf13/cobra.(*Command).execute(0xc000118000, 0xc000124240, 0x6, 0x6, 0xc000118000, 0xc000124240)
	/github/home/.cache/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:850 +0x472
github.com/spf13/cobra.(*Command).ExecuteC(0xc000118000, 0x6, 0x6, 0xf)
	/github/home/.cache/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:958 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
	/github/home/.cache/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:895
github.com/nektos/act/cmd.Execute(0xe7b920, 0xc0003c6640, 0xe57c9c, 0x6)
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/cmd/root.go:71 +0x100c
main.main()
	/tmp/act-20210804-1757-7cby3e/act-0.2.24/main.go:33 +0x175

It seems to be referring to folders like /home/linuxbrew which don't exist on my machine.

System information

- Operating System: Linux
- Architecture: x64 (64-bit)
- Apple M1: nope, Lenovo X1 :-)
- Docker version 20.10.7, build 20.10.7-0ubuntu1~20.04.1
- Docker image used in `act`: doesn't matter, same error no matter which one I choose.
- `act` version: act version 0.2.24

Workflow and/or repository

SolarTherm/SolarTherm on github.

[catthehacker]

I can't reproduce issue using latest and master version of act. Please provide full command you used and commit hash for https://github.com/SolarTherm/SolarTherm

It seems to be referring to folders like /home/linuxbrew which don't exist on my machine.

It refers to /home/linuxbrew because that's where brew stores dependencies and programs.

[ChristopherHX]

This is (should be, not tested by me) fixed in master, but latest=v0.2.24 doesn't include the fix for fail-fast without matrix property in strategy.
Removing the unused strategy property is a workaround until v0.2.25 will be released.

The following workflow is causing the crash, remove the unused highlighted code and act v0.2.24 won't crash. (this is a duplicated issue)
https://github.com/SolarTherm/SolarTherm/blob/85458de8e7f64e484c82e03031a9dbc434be26cc/.github/workflows/dakota.yml#L8-L9

[catthehacker]

[ChristopherHX]

I'm able to reproduce this, if you use the push event act skips this workflow.

sudo ~/Downloads/act -W .github/workflows/dakota.yml workflow_dispatch -v
DEBU[0000] Loading environment from /tmp/SolarTherm/.env 
DEBU[0000] Loading secrets from /tmp/SolarTherm/.secrets 
DEBU[0000] Loading workflow '/tmp/SolarTherm/.github/workflows/dakota.yml' 
DEBU[0000] Reading workflow '/tmp/SolarTherm/.github/workflows/dakota.yml' 
DEBU[0000] Correcting if statements '/tmp/SolarTherm/.github/workflows/dakota.yml' 
DEBU[0000] Planning event: workflow_dispatch            
panic: reflect: call of reflect.Value.Type on zero Value

goroutine 1 [running]:
reflect.Value.Type(0x0, 0x0, 0x0, 0x0, 0x0)
	/opt/hostedtoolcache/go/1.16.6/x64/src/reflect/value.go:1908 +0x189
github.com/nektos/act/pkg/model.(*Job).Matrix(0xc0004fa000, 0x0)
	/home/runner/work/act/act/pkg/model/workflow.go:178 +0xd7
github.com/nektos/act/pkg/model.(*Job).GetMatrixes(0xc0004fa000, 0xc00048c268, 0x5, 0xc0004fa000)
	/home/runner/work/act/act/pkg/model/workflow.go:200 +0x76
github.com/nektos/act/pkg/runner.(*runnerImpl).NewPlanExecutor(0xc0004907e0, 0xc000490738, 0x5)
	/home/runner/work/act/act/pkg/runner/runner.go:119 +0x685
github.com/nektos/act/cmd.newRunCommand.func1(0xc000492000, 0xc0004d8000, 0x1, 0xc, 0x0, 0x0)
	/home/runner/work/act/act/cmd/root.go:290 +0xc5f
github.com/spf13/cobra.(*Command).execute(0xc000492000, 0xc000494300, 0xc, 0x10, 0xc000492000, 0xc000494300)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:850 +0x472
github.com/spf13/cobra.(*Command).ExecuteC(0xc000492000, 0xc, 0x10, 0xf)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:958 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:895
github.com/nektos/act/cmd.Execute(0xe73820, 0xc0003dc600, 0xe500bc, 0x6)
	/home/runner/work/act/act/cmd/root.go:71 +0x100c
main.main()
	/home/runner/work/act/act/main.go:33 +0x175

[jdpipe]

Just giving my full steps.

# get my code to test
cd ~
git clone https://github.com/SolarTherm/solartherm.git
# per 'Alternative Installation' from https://docs.brew.sh/Homebrew-on-Linux
git clone https://github.com/Homebrew/brew ~/.linuxbrew/Homebrew
mkdir ~/.linuxbrew/bin
ln -s ~/.linuxbrew/Homebrew/bin/brew ~/.linuxbrew/bin
eval $(~/.linuxbrew/bin/brew shellenv)
# so now I have 'brew'...
brew install act
# so now I have act?
cd ~/solartherm
act

and then I got the error as above.

panic: reflect: call of reflect.Value.Type on zero Value

[alvaromartmart]

I'm getting the same error, on a M1 mac (I used the --container-architecture linux/arm64) arg)

[catthehacker]

Duplicate of #760
Already fixed in master, you can use linked or any newer pull request artefacts to get working build

[josegonzalez]

I know its fixed in master, but the latest release one gets from homebrew has this error, which makes it a bit more difficult for new users to figure out why their job isn't working locally.

Would it be possible to get a new release soonish? If there is something blocking that release, I'd love to hear about it so that maybe I can help out? :)

[catthehacker]

@josegonzalez #678 (comment)
brew install act --HEAD

[francisco-gs-colpal]

@josegonzalez #678 (comment) brew install act --HEAD

Than you very much, maybe documentation could be updated