Unmarshal panic when structure field type is custom

[Aukstkalnis]

I created toml file:

[[Device]]
Imei = 3500000000000
Job = 0

[[Device]]
Imei = 3500000000000
Job = 0

Code:
type Job uint8
type Device struct {
Imei uint64
AssignedJob Job
}
...
type DeviceList []Device
var dev DeviceList
toml.Unmarchal(file, &dev)

An I get panic:
panic: reflect.Set: value of type uint8 is not assignable to type device.Job [recovered]
panic: reflect.Set: value of type uint8 is not assignable to type device.Job

goroutine 18 [running]:
testing.tRunner.func1(0xc0420ac0f0)
C:/go/src/testing/testing.go:711 +0x2d9
panic(0x559e20, 0xc0420e95b0)
C:/go/src/runtime/panic.go:491 +0x291
reflect.Value.assignTo(0x559fa0, 0x648ca0, 0x88, 0x590d16, 0xb, 0x558a20, 0x0, 0x559720, 0x679fa0, 0x0)
C:/go/src/reflect/value.go:2186 +0x3ad
reflect.Value.Set(0x558a20, 0xc042052af8, 0x188, 0x559fa0, 0x648ca0, 0x88)
C:/go/src/reflect/value.go:1351 +0xab
github.com/pelletier/go-toml.valueFromTree(0x649760, 0x57a540, 0xc042051840, 0xa, 0x556b20, 0xc0420f8780, 0x97, 0x649760)
D:/Projects/Go_Projects/src/github.com/pelletier/go-toml/marshal.go:283 +0x45f
github.com/pelletier/go-toml.valueFromTreeSlice(0x649760, 0x556b20, 0xc04209e780, 0xa, 0x10, 0x411e63, 0xc0420b2ea0, 0x646a80, 0xc0420b2f78, 0xc0)
D:/Projects/Go_Projects/src/github.com/pelletier/go-toml/marshal.go:306 +0x171
github.com/pelletier/go-toml.valueFromToml(0x649760, 0x556b20, 0x556560, 0xc0420f8600, 0xc0420f8600, 0x556b20, 0x0, 0x0, 0x0)
D:/Projects/Go_Projects/src/github.com/pelletier/go-toml/marshal.go:337 +0x1a7
github.com/pelletier/go-toml.valueFromTree(0x649760, 0x5695e0, 0xc042051820, 0x100, 0xc042051820, 0xb5, 0x100, 0xc04203bbd0)
D:/Projects/Go_Projects/src/github.com/pelletier/go-toml/marshal.go:279 +0x3a4
github.com/pelletier/go-toml.(*Tree).Unmarshal(0xc042051820, 0x54fb20, 0xc042051800, 0x0, 0x0)
D:/Projects/Go_Projects/src/github.com/pelletier/go-toml/marshal.go:235 +0x173
github.com/pelletier/go-toml.Unmarshal(0xc0420be000, 0x4bb, 0x6bb, 0x54fb20, 0xc042051800, 0x0, 0x0)

When I use json, there is no panic, so I think there should also to be no panic.

[pelletier]

Thank you for the bug report! You are right: Unmarshal should not panic, and only return an error in that case.