fixup! Attempt to pick the fastest network interface for workers

Author: JamesWrigley

src/network_interfaces.jl

@@ -56,7 +56,7 @@ struct Interface
     # These two fields are taken from the sysfs /type and /speed files if available:
     # https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-net
     type::Union{ARPHardware, Nothing}
-    speed::Union{Int, Nothing}
+    speed::Union{Float64, Nothing}
 end
 
 function _get_interfaces(
@@ -115,7 +115,7 @@ function _get_interfaces(
         speed = nothing
         if isfile(speed_path)
             try
-                reported_speed = parse(Int, read(speed_path, String))
+                reported_speed = parse(Float64, read(speed_path, String))
                 if reported_speed > 0
                     speed = reported_speed
                 end