Crates without owner

This list is really strange. It is totally unclear how could that happen that some crates are without an owner. Is this a bug in Rust Digger? Is this a bug in Crates.io? This needs to be investigated further.

Total: 11

name update at owner repo count CI fmt
wepoll-sys-stjepang 2020-09-14 16:12:54.362167 NA repo NA NA fmt
multitask 2020-07-14 17:45:04.072789 NA repo NA NA fmt
spsc-queue 2020-06-10 17:51:12.337147 NA NA NA NA fmt
sharded-lock 2020-06-02 13:51:50.77289 NA NA NA NA fmt
simple-rwlock 2020-05-28 20:57:40.93891 NA NA NA NA fmt
simple-mutex 2020-05-27 11:17:52.688321 NA repo NA NA fmt
stjepang 2020-05-17 17:52:00.391939 NA NA NA NA fmt
concurrent-buffer 2020-05-17 16:09:12.61601 NA NA NA NA fmt
smoler 2020-04-30 12:05:40.697945 NA NA NA NA fmt
coco 2017-12-19 15:32:05.298115 NA repo NA NA fmt
pdqsort 2017-03-27 09:53:44.062068 NA repo NA NA fmt