merge with stable

--HG--
branch : stable
13 jobs for 5.7rc0 in 33 minutes and 4 seconds (queued for 11 minutes and 22 seconds)
latest
Status Job ID Name Coverage
  Tests
passed #154119
checks-py2

00:04:25

passed #154120
checks-py3

00:02:54

passed #154121
rust-cargo-test-py2

00:01:54

passed #154122
rust-cargo-test-py3

00:02:12

passed #154123
test-py2

00:26:27

passed #154129
test-py2-chg

00:19:18

passed #154125
test-py2-pure

00:20:17

passed #154127
test-py2-rust

00:23:06

passed #154124
test-py3

00:19:29

passed #154130
test-py3-chg

00:08:36

passed #154126
test-py3-pure

00:13:03

passed #154128
test-py3-rust

00:20:34

 
  Phabricator
passed #154131
phabricator-refresh

00:00:16