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...is called (self$protect, at levels 4 and 7 on the call stack), and in the inner call (7), a variable, `task`, does not have the correct value. It should be a function, but it isn't; it's either NULL or some other non-function value. That code is here: https://github.com/rstudio/pool/blob/f7e52a3/R/scheduler.R#L79-L81 Note that there's a `force(task)` a couple lines above, which is commented out. If that is uncommented, the test passes, even though calling force() there shouldn't make a difference. Also, calling `format(1)` at that location also causes the test to pass. I've w...

...evels > 4 and 7 on the call stack), and in the inner call (7), a variable, > `task`, does not have the correct value. It should be a function, but > it isn't; it's either NULL or some other non-function value. > > That code is here: > https://github.com/rstudio/pool/blob/f7e52a3/R/scheduler.R#L79-L81 > Note that there's a `force(task)` a couple lines above, which is > commented out. If that is uncommented, the test passes, even though > calling force() there shouldn't make a difference. Also, calling > `format(1)` at that location also causes the test t...