Update unstable library feature list by Travis CI build 1548

Author: Travis CI

unstable_library_feature.txt

@@ -29,7 +29,6 @@ is_sorted                           53485    2018-10-11 15:59:54 -0700  2018-10-
 thread_spawn_unchecked              55132    2018-10-16 22:42:14 +0200  2018-10-16 22:42:14 +0200
 hash_raw_entry                      56167    2018-11-22 09:52:24 -0700  2018-11-22 09:52:24 -0700
 exact_size_is_empty                 35428    2018-12-17 17:28:27 -0500  2018-12-17 17:28:27 -0500
-renamed_spin_loop                   55002    2018-12-19 16:43:29 -0500  2018-12-19 16:43:29 -0500
 sgx_platform                        56975    2018-12-19 17:26:17 +0530  2020-07-15 15:48:36 -0700
 error_iter                          58520    2019-02-16 12:16:18 -0800  2019-02-16 12:16:18 -0800
 shrink_to                           56431    2019-02-20 11:13:35 +0000  2020-04-19 11:59:19 -0400
@@ -125,7 +124,7 @@ unchecked_math                      none     2020-02-18 13:18:33 -0500  2020-02-
 can_vector                          69941    2020-03-11 18:02:52 -0700  2020-03-11 18:02:52 -0700
 option_zip                          70086    2020-03-18 11:02:29 +0300  2020-03-18 11:02:29 +0300
 result_flattening                   70142    2020-03-19 09:57:37 +0100  2020-03-19 09:57:37 +0100
-wake_trait                          69912    2020-03-23 01:35:01 +0100  2020-03-23 01:35:01 +0100
+wake_trait                          69912    2020-03-23 01:36:08 +0100  2020-03-23 01:36:08 +0100
 alloc_layout_extra                  55724    2020-03-24 11:45:38 +0100  2020-03-24 11:45:38 +0100
 osstring_ascii                      70516    2020-03-28 19:23:49 -0400  2020-03-28 19:23:49 -0400
 write_all_vectored                  70436    2020-03-31 15:16:43 +0200  2020-03-31 15:16:43 +0200
@@ -181,7 +180,6 @@ control_flow_enum                   75744    2020-09-02 14:12:21 -0500  2020-10-
 slice_iter_mut_as_slice             58957    2020-09-03 15:51:57 +0000  2020-09-03 15:51:57 +0000
 slice_index_methods                 none     2020-09-04 02:26:45 +0000  2020-09-04 02:26:45 +0000
 sort_internals                      none     2020-09-04 04:46:02 +0000  2020-09-04 04:46:02 +0000
-int_error_matching                  22639    2020-09-04 13:37:15 +0000  2020-09-04 13:37:15 +0000
 int_bits_const                      76904    2020-09-04 14:20:01 +0000  2020-09-04 14:20:01 +0000
 unsigned_abs                        74913    2020-09-04 14:20:01 +0000  2020-09-04 14:20:01 +0000
 bufreader_seek_relative             31100    2020-09-10 23:39:55 -0400  2020-09-10 23:39:55 -0400