22     pub value: UnpackErrorValue,  field
27         UnpackError { value: val }  in from()
34             value: UnpackErrorValue::BytesReadError(error),  in from()
51     pub value: PackErrorValue,  field
56         PackError { value: val }  in from()
63             value: PackErrorValue::BytesWriteError(error),  in from()
70         fmt::Display::fmt(&self.value, f)  in fmt()
76         self.value.cause()  in cause()
80         self.value.backtrace()  in backtrace()
86         fmt::Display::fmt(&self.value, f)  in fmt()
92         self.value.cause()  in cause()
96         self.value.backtrace()  in backtrace()