MOI test failed in GSI CI run after moving to Go 1.8.1

After below is fixed, please revert:
08c02dbe Revert "MB-23969: Move to 1.8.1"
49c84b80 MB-23920: Refresh SSL certificate in 1.7.3 way

After moving indexer to Go 1.8.1, CI run failed in MOI storage mode in test case TestBuildDeferredAnotherBuilding. From indexer logs around the time of test failure, two crashes were found:

#1:

2017-04-18T11:49:28.570+05:30 [Info] TK StreamBegin INIT_STREAM default 888 263529442115825 0
runtime: pointer 0xc42887b8c0 to unused region of span idx=0x443d span.base()=0xc42ad52000 span.limit=0xc42ad54000 span.state=1
fatal error: found bad pointer in Go heap (incorrect use of unsafe or cgo?)

runtime stack:
runtime.throw(0xe84977, 0x3e)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/panic.go:596 +0x95 fp=0x7fe796ffdd18 sp=0x7fe796ffdcf8
runtime.heapBitsForObject(0xc42887b8c0, 0x0, 0x0, 0x0, 0x0, 0x7fe700000000, 0x0, 0x0)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mbitmap.go:433 +0x2bb fp=0x7fe796ffdd70 sp=0x7fe796ffdd18
runtime.shade(0xc42887b8c0)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mgcmark.go:1340 +0x41 fp=0x7fe796ffddc8 sp=0x7fe796ffdd70
runtime.gcmarkwb_m(0x7fe794022658, 0x7fe78422c540)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mbarrier.go:154 +0xea fp=0x7fe796ffdde0 sp=0x7fe796ffddc8
runtime.writebarrierptr_prewrite1.func1()
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mbarrier.go:188 +0x64 fp=0x7fe796ffde00 sp=0x7fe796ffdde0
runtime.systemstack(0xc42001f300)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/asm_amd64.s:327 +0x79 fp=0x7fe796ffde08 sp=0x7fe796ffde00
runtime.mstart()
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/proc.go:1132 fp=0x7fe796ffde10 sp=0x7fe796ffde08

goroutine 257213 [running]:
runtime.systemstack_switch()
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/asm_amd64.s:281 fp=0xc4251caa18 sp=0xc4251caa10
runtime.writebarrierptr_prewrite1(0x7fe794022658, 0x7fe78422c540)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mbarrier.go:189 +0xbf fp=0xc4251caa58 sp=0xc4251caa18
runtime.writebarrierptr(0x7fe794022658, 0x7fe78422c540)
/home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mbarrier.go:211 +0x4d fp=0xc4251caa90 sp=0xc4251caa58
github.com/couchbase/indexing/secondary/memdb/skiplist.(*Skiplist).Insert3(0xc424b34000, 0x7fe77c14dc40, 0xc4201b1300, 0xc4201b1320, 0xc43943b050, 0x4, 0x7fe77c14dc00, 0xc42219d6e8, 0x0, 0x0)
/opt/build/goproj/src/github.com/couchbase/indexing/secondary/memdb/skiplist/skiplist.go:235 +0x563 fp=0xc4251cab00 sp=0xc4251caa90
github.com/couchbase/indexing/secondary/memdb/skiplist.(*Skiplist).Insert2(0xc424b34000, 0x7fe77c14dc40, 0xc4201b1300, 0xc4201b1320, 0xc43943b050, 0xc4251cabb8, 0xc42219d6e8, 0x41608d, 0xc42ef7f560)
/opt/build/goproj/src/github.com/couchbase/indexing/secondary/memdb/skiplist/skiplist.go:210 +0x91 fp=0xc4251cab60 sp=0xc4251cab00
github.com/couchbase/indexing/secondary/memdb.(*Writer).Put2(0xc42219d680, 0xc431caa000, 0x25, 0x3902, 0x18)
/opt/build/goproj/src/github.com/couchbase/indexing/secondary/memdb/memdb.go:198 +0x10b fp=0xc4251cabd8 sp=0xc4251cab60

#2

2017-04-18T12:01:10.179+05:30 [Info] StorageMgr::handleCreateSnapshot Added New Snapshot Index: 16682140985260369687 PartitionId: 0 SliceId: 0 Crc64: 8357976057330050722 (SnapshotInfo: count:58367 committed:false) SnapCreateDur 19.263µs SnapOpenDur 51.384µs

runtime: nelems=14 nfree=11 nalloc=3 previous allocCount=2 nfreed=65535

fatal error: sweep increased allocation count

runtime stack:

runtime.throw(0xe6eda9, 0x20)

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/panic.go:596 +0x95 fp=0x7eff193feca8 sp=0x7eff193fec88

runtime.(*mspan).sweep(0x7eff284ef0b0, 0x7eff284ef000, 0xc420001040)

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mgcsweep.go:288 +0x786 fp=0x7eff193fed78 sp=0x7eff193feca8

runtime.sweepone(0x4379e6)

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mgcsweep.go:110 +0x1ad fp=0x7eff193fede0 sp=0x7eff193fed78

runtime.gosweepone.func1()

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/mgcsweep.go:125 +0x2b fp=0x7eff193fee00 sp=0x7eff193fede0

runtime.systemstack(0xc42001f300)

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/asm_amd64.s:327 +0x79 fp=0x7eff193fee08 sp=0x7eff193fee00

runtime.mstart()

        /home/buildbot/.cbdepscache/exploded/x86_64/go-1.8.1/go/src/runtime/proc.go:1132 fp=0x7eff193fee10 sp=0x7eff193fee08

The above two errors occured totally twice. 

Run link: http://ci2i-unstable.northscale.in/gsi-memdb-18.04.2017-10.46.fail.html

Server log link: http://ci2i-unstable.northscale.in/logs-18.04.2017-10.46.tar.gz