try fix

Author: IanButterworth

src/Types.jl

@@ -470,7 +470,12 @@ function write_env_usage(source_file::AbstractString, usage_filepath::AbstractSt
     while true
         # read existing usage file
         usage = if isfile(usage_file)
-            TOML.parsefile(usage_file)
+            try
+                TOML.parsefile(usage_file)
+            catch
+                sleep(0.1)
+                continue
+            end
         else
             Dict{String, Any}()
         end