Collection has multiple elements, expected exactly 1 element

[baggepinnen]

I might have stumbled upon a little bug

julia> using AllocCheck
[ Info: Precompiling AllocCheck [9b6a8646-10ed-4001-bbdc-1d2f46dfbb1a]

julia> function controller(verbose::Bool)
                  a = 0.0
                  for i = 1:100
                      a = a + i
                      verbose && @info "a = $a"
                      Libc.systemsleep(0.01)
                  end
              end
controller (generic function with 1 method)

julia> check_allocs(controller, (Bool,))

ERROR: ArgumentError: Collection has multiple elements, must contain exactly 1 element
Stacktrace:
 [1] only
   @ AllocCheck ./iterators.jl:1527 [inlined]
 [2] rename_calls_and_throws!(f::LLVM.Function, job::GPUCompiler.CompilerJob{GPUCompiler.NativeCompilerTarget, AllocCheck.NativeParams})
   @ AllocCheck ~/.julia/dev/AllocCheck/src/AllocCheck.jl:193
 [3] (::AllocCheck.var"#15#16"{Bool, Vector{AllocCheck.AllocInstance}, GPUCompiler.CompilerJob{GPUCompiler.NativeCompilerTarget, AllocCheck.NativeParams}})(ctx::LLVM.Context)
   @ AllocCheck ~/.julia/dev/AllocCheck/src/AllocCheck.jl:258
 [4] JuliaContext(f::AllocCheck.var"#15#16"{Bool, Vector{AllocCheck.AllocInstance}, GPUCompiler.CompilerJob{GPUCompiler.NativeCompilerTarget, AllocCheck.NativeParams}})
   @ GPUCompiler ~/.julia/packages/GPUCompiler/2mJjc/src/driver.jl:47
 [5] #check_allocs#14
   @ AllocCheck ~/.julia/dev/AllocCheck/src/AllocCheck.jl:246 [inlined]
 [6] check_allocs(func::Any, types::Any)
   @ AllocCheck ~/.julia/dev/AllocCheck/src/AllocCheck.jl:243
 [7] top-level scope
   @ REPL[4]:1