We had a varnish crash on cp3059:
Jul 01 14:07:43 cp3059 varnishd[1204]: Child (1694) Panic at: Thu, 01 Jul 2021 14:07:43 GMT Wrong turn at cache/cache_wrk.c:540: Worker Pool Queue does not move version = varnish-6.0.7 revision 525d371e3ea0e0c38edd7baf0f80dc226560f26e, vrt api = 7.1 ident = Linux,4.19.0-14-amd64,x86_64,-junix,-smalloc,-smalloc,-hcritbit,epoll now = 12110617.922957 (mono), 1625148433.038834 (real) Backtrace: 0x55e7ad786ccd: /usr/sbin/varnishd(+0x4dccd) [0x55e7ad786ccd] 0x55e7ad7f1153: /usr/sbin/varnishd(VAS_Fail+0x13) [0x55e7ad7f1153] 0x55e7ad7a8a0f: /usr/sbin/varnishd(pool_herder+0x7bf) [0x55e7ad7a8a0f] 0x7f5ef5de6fa3: /lib/x86_64-linux-gnu/libpthread.so.0(+0x7fa3) [0x7f5ef5de6fa3] 0x7f5ef5d174cf: /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f) [0x7f5ef5d174cf] thread = (pool_herder) thr.req = (nil) { }, thr.busyobj = (nil) { }, vmods = { std = {Varnish 6.0.7 525d371e3ea0e0c38edd7baf0f80dc226560f26e, 0.0}, header = {Varnish 6.0.6 29a1a8243dbef3d973aec28dc90403188c1dc8e7, 7.1}, directors = {Varnish 6.0.7 525d371e3ea0e0c38edd7baf0f80dc226560f26e, 0.0}, netmapper = {Varnish 6.0.6 29a1a8243dbef3d973aec28dc90403188c1dc8e7, 7.1}, vsthrottle = {Varnish 6.0.6 29a1a8243dbef3d973aec28dc90403188c1dc8e7, 7.1}, },
The host is running 6.0.7-1wm1 like the rest of the fleet.