Logging errors

[simonegaffurini]

Hi, I noticed that if an error is thrown inside of a step, it will be logged with

workflow/src/workflow.ts

Line 92 in fa904e2

console.error(` Failed.`)

workflow/src/workflow.ts

Line 93 in fa904e2

console.error(e)

how about changing this to

debug(` Failed.`)
debug(e)

in my case, I want to avoid printing the error line and print human readable log.

Any reason why it's being printed like that instead?