Backtraces are logged in the log file during execution of a program and tagged with information that can categorize the backtraces. A method for forming a film by providing a liquid containing a functional material in a region surrounded by a bank includes forming a groove extending along the periphery of the region, providing the liquid in the region, and drying the liquid to form the film. The thermal conductivity of the silicon carbide is sufficiently high such that it can be employed as parts of apparatus and components of electrical devices where a high heat load is generated. In another aspect, a brake pump assembly with a hydraulic block, a straight bore polymer piston, a peripheral sealing lip projecting from a proximal portion of the polymer piston, and a elastomeric seal mounted to a distal portion of the polymer piston, where the peripheral sealing lip selectively acts to depressurize fluid accumulating between the peripheral sealing lip and elastomeric seal. The use of a web with a planar interior surface, without dividers, provides two advantages.