unable to reuse mount within fs block

[coryb]

Input:

fs default() {
	image "busybox"
	run "touch foo" with option {
		dir "/foo"
		mount fs { scratch; } "/foo" as fooMount
	}
	run "ls -l" with option {
		dir "/foo"
		mount fooMount "/foo"
	}
}

Output:

$ hlb run ./bugs.hlb
#1 compiling [default]
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFuncDecl
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/decl.go:19
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitAliasDecl
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/decl.go:81
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFilesystemAliasDecl
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/decl.go:96
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFilesystemExpr
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/expr.go:110
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitExecOptions
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:1357
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitOptions
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:866
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitWithOption
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:322
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFilesystemChainStmt
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:330
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitChainStmt
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:185
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitBlock
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:157
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFilesystemBlock
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:272
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFuncDecl
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/decl.go:45
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).EmitFilesystemFuncDecl
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/decl.go:56
#1 0.000 github.com/openllb/hlb/codegen.(*CodeGen).Generate
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/codegen/codegen.go:95
#1 0.000 github.com/openllb/hlb.Compile.func1
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/hlb.go:146
#1 0.000 github.com/openllb/hlb/solver.(*progressUI).Write.func2.1
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/solver/progress.go:172
#1 0.000 github.com/openllb/hlb/solver.write
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/solver/progress.go:196
#1 0.000 github.com/openllb/hlb/solver.(*progressUI).Write.func2
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/github.com/openllb/hlb/solver/progress.go:171
#1 0.000 golang.org/x/sync/errgroup.(*Group).Go.func1
#1 0.000 	/go/src/stash.corp.netflix.com/engtools/newt/vendor/golang.org/x/sync/errgroup/errgroup.go:57
#1 0.000 runtime.goexit
#1 0.000 	/go-version/1.14.1/src/runtime/asm_amd64.s:1373
#1 0.000 Caused by: default expected args [], found [fooMount "/foo"]
#1 ERROR: default expected args [], found [fooMount "/foo"]
------
 > compiling [default]:
#1 0.000 Caused by: default expected args [], found [fooMount "/foo"]
------