Add is_convertible_without_narrowing
#220
| Job | Run time |
|---|---|
| 5s | |
| 41s | |
| 41s | |
| 26s | |
| 49s | |
| 32s | |
| 36s | |
| 34s | |
| 33s | |
| 37s | |
| 49s | |
| 20s | |
| 32s | |
| 37s | |
| 31s | |
| 17s | |
| 45s | |
| 1m 11s | |
| 57s | |
| 57s | |
| 1m 7s | |
| 1m 38s | |
| 1m 12s | |
| 2m 37s | |
| 2m 19s | |
| 2m 7s | |
| 1m 49s | |
| 1m 46s | |
| 1m 41s | |
| 2m 28s | |
| 2m 35s | |
| 1m 12s | |
| 1m 46s | |
| 16s | |
| 37m 3s |