▶ go version
go version go1.6.2 darwin/amd64

~
▶ go get -u github.com/codesenberg/bombardier
# github.com/codesenberg/bombardier/vendor/golang.org/x/text/unicode/norm
fatal error: unexpected signal during runtime execution
[signal 0xb code=0x1 addr=0xb01dfacedebac1e pc=0xf0eb]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a
runtime.unlock(0x985540)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lock_sema.go:107 +0x14b
runtime.(*mheap).alloc_m(0x985540, 0x1, 0x3, 0xbb0c30)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:492 +0x314
runtime.(*mheap).alloc.func1()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:502 +0x41
runtime.systemstack(0xc820043e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:307 +0xab
runtime.(*mheap).alloc(0x985540, 0x1, 0x10000000003, 0xed8f)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:503 +0x63
runtime.(*mcentral).grow(0x986960, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcentral.go:209 +0x93
runtime.(*mcentral).cacheSpan(0x986960, 0xbb0c30)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcentral.go:89 +0x47d
runtime.(*mcache).refill(0xaf74b0, 0xc800000003, 0xbb0c30)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcache.go:119 +0xcc
runtime.mallocgc.func2()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:642 +0x2b
runtime.systemstack(0xc82001c000)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:291 +0x79
runtime.mstart()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1051

goroutine 1 [running]:
runtime.systemstack_switch()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:245 fp=0xc820063540 sp=0xc820063538
runtime.mallocgc(0x20, 0x40a480, 0x0, 0xc820fffc20)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:643 +0x869 fp=0xc820063618 sp=0xc820063540
runtime.newobject(0x40a480, 0xc820fffb45)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:781 +0x42 fp=0xc820063640 sp=0xc820063618
cmd/compile/internal/gc.list(0xc820febf80, 0xc820fffc20, 0xc820febf01)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/syntax.go:417 +0x10e fp=0xc820063678 sp=0xc820063640
cmd/compile/internal/gc.(*parser).complitexpr(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1719 +0xa3 fp=0xc8200636b0 sp=0xc820063678
cmd/compile/internal/gc.(*parser).bare_complitexpr(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1699 +0x31 fp=0xc8200636d8 sp=0xc8200636b0
cmd/compile/internal/gc.(*parser).keyval(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1669 +0x2e fp=0xc820063708 sp=0xc8200636d8
cmd/compile/internal/gc.(*parser).complitexpr(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1719 +0x8b fp=0xc820063740 sp=0xc820063708
cmd/compile/internal/gc.(*parser).pexpr(0x975b80, 0x0, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1646 +0x4ed fp=0xc820063808 sp=0xc820063740
cmd/compile/internal/gc.(*parser).uexpr(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1399 +0x19f fp=0xc8200638b8 sp=0xc820063808
cmd/compile/internal/gc.(*parser).bexpr(0x975b80, 0x1, 0x10)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1278 +0x25 fp=0xc8200638f8 sp=0xc8200638b8
cmd/compile/internal/gc.(*parser).expr(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:1297 +0x33 fp=0xc820063920 sp=0xc8200638f8
cmd/compile/internal/gc.(*parser).expr_list(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:2787 +0x2e fp=0xc820063960 sp=0xc820063920
cmd/compile/internal/gc.(*parser).vardcl(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:569 +0x78 fp=0xc8200639a0 sp=0xc820063960
cmd/compile/internal/gc.(*parser).(cmd/compile/internal/gc.vardcl)-fm(0x975b80)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:526 +0x20 fp=0xc8200639b8 sp=0xc8200639a0
cmd/compile/internal/gc.(*parser).common_dcl(0x975b80, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:550 +0x204 fp=0xc820063a48 sp=0xc8200639b8
cmd/compile/internal/gc.(*parser).xdcl_list(0x975b80, 0xc820218de0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:2256 +0x5c fp=0xc820063aa8 sp=0xc820063a48
cmd/compile/internal/gc.(*parser).file(0x975b80)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:320 +0x81 fp=0xc820063ae0 sp=0xc820063aa8
cmd/compile/internal/gc.parse_file()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/parser.go:56 +0x5a fp=0xc820063af0 sp=0xc820063ae0
cmd/compile/internal/gc.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/lex.go:345 +0x1d44 fp=0xc820063e10 sp=0xc820063af0
cmd/compile/internal/amd64.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/amd64/galign.go:127 +0x58d fp=0xc820063e78 sp=0xc820063e10
main.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/main.go:32 +0x395 fp=0xc820063f50 sp=0xc820063e78
runtime.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:188 +0x2b0 fp=0xc820063fa0 sp=0xc820063f50
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc820063fa8 sp=0xc820063fa0
# github.com/codesenberg/bombardier/vendor/github.com/alecthomas/template/parse
fatal error: unexpected signal during runtime execution
[signal 0xb code=0x1 addr=0xb01dfacedebac1e pc=0xf0eb]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a
runtime.unlock(0x985540)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lock_sema.go:107 +0x14b
runtime.(*mheap).alloc_m(0x985540, 0x1, 0x8, 0xb6b930)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:492 +0x314
runtime.(*mheap).alloc.func1()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:502 +0x41
runtime.systemstack(0xc820067e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:307 +0xab
runtime.(*mheap).alloc(0x985540, 0x1, 0x10000000008, 0xed8f)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mheap.go:503 +0x63
runtime.(*mcentral).grow(0x986b90, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcentral.go:209 +0x93
runtime.(*mcentral).cacheSpan(0x986b90, 0xb6b930)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcentral.go:89 +0x47d
runtime.(*mcache).refill(0xaf7000, 0x8, 0xb6b930)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mcache.go:119 +0xcc
runtime.mallocgc.func2()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:642 +0x2b
runtime.systemstack(0xc8204524c0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:291 +0x79
runtime.mstart()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1051

goroutine 1 [running]:
runtime.systemstack_switch()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:245 fp=0xc820b1d350 sp=0xc820b1d348
runtime.mallocgc(0x70, 0x41b6a0, 0x0, 0x4c20e9)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:643 +0x869 fp=0xc820b1d428 sp=0xc820b1d350
runtime.newobject(0x41b6a0, 0xc81ff96256)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/malloc.go:781 +0x42 fp=0xc820b1d450 sp=0xc820b1d428
cmd/compile/internal/gc.newliveness(0xc8201b8480, 0xc820df0ea0, 0xc820d3b500, 0x3, 0x4, 0xc820d3b540, 0x3, 0x4, 0xc98b7c94330faca9)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/plive.go:679 +0x32 fp=0xc820b1d708 sp=0xc820b1d450
cmd/compile/internal/gc.liveness(0xc8201b8480, 0xc820df0ea0, 0xc820d42b00, 0xc820d42b80)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/plive.go:1782 +0x2cf fp=0xc820b1d7e8 sp=0xc820b1d708
cmd/compile/internal/gc.compile(0xc8201b8480)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/pgen.go:541 +0xdf2 fp=0xc820b1da58 sp=0xc820b1d7e8
cmd/compile/internal/gc.funccompile(0xc8201b8480)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/dcl.go:1450 +0x1c0 fp=0xc820b1dad0 sp=0xc820b1da58
cmd/compile/internal/gc.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/lex.go:472 +0x2116 fp=0xc820b1ddf0 sp=0xc820b1dad0
cmd/compile/internal/amd64.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/amd64/galign.go:127 +0x58d fp=0xc820b1de58 sp=0xc820b1ddf0
main.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/main.go:32 +0x395 fp=0xc820b1df30 sp=0xc820b1de58
runtime.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:188 +0x2b0 fp=0xc820b1df80 sp=0xc820b1df30
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc820b1df88 sp=0xc820b1df80
# github.com/codesenberg/bombardier/vendor/github.com/cheggaaa/pb
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
fatal error: unexpected signal during runtime execution
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc820063cf8 sp=0xc820063ce0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc820063d48 sp=0xc820063cf8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc820063d50 sp=0xc820063d48
runtime.lfstackpop(0x976bc8, 0x1fea3)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc820063d88 sp=0xc820063d50
runtime.getempty(0x67, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc820063db8 sp=0xc820063d88
runtime.(*gcWork).init(0xc820063e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:100 +0x53 fp=0xc820063dd0 sp=0xc820063db8
runtime.(*gcWork).get(0xc820063e58, 0xc800000001)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc820063e00 sp=0xc820063dd0
runtime.gcDrain(0xc820063e58, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc820063e38 sp=0xc820063e00
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc820063e88 sp=0xc820063e38
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc820063ea8 sp=0xc820063e88
runtime.findrunnable(0xc820026000, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0xc820063f28 sp=0xc820063ea8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0xc820063f60 sp=0xc820063f28
runtime.park_m(0xc820001200)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0xc820063f88 sp=0xc820063f60
runtime.mcall(0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0xc820063f98 sp=0xc820063f88

goroutine 1 [runnable]:
cmd/compile/internal/amd64.pushback(0xc820f3d750)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/amd64/peep.go:305 fp=0xc820f5b2c0 sp=0xc820f5b2b8
cmd/compile/internal/amd64.peep(0xc820ce9560)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/amd64/peep.go:297 +0x486 fp=0xc820f5b320 sp=0xc820f5b2c0
cmd/compile/internal/gc.regopt(0xc820ce9560)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/reg.go:1389 +0x2d8d fp=0xc820f5b7d8 sp=0xc820f5b320
cmd/compile/internal/gc.compile(0xc82011ce10)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/pgen.go:521 +0xe6d fp=0xc820f5ba48 sp=0xc820f5b7d8
cmd/compile/internal/gc.funccompile(0xc82011ce10)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/dcl.go:1450 +0x1c0 fp=0xc820f5bac0 sp=0xc820f5ba48
cmd/compile/internal/gc.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/gc/lex.go:472 +0x2116 fp=0xc820f5bde0 sp=0xc820f5bac0
cmd/compile/internal/amd64.Main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/internal/amd64/galign.go:127 +0x58d fp=0xc820f5be48 sp=0xc820f5bde0
main.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/cmd/compile/main.go:32 +0x395 fp=0xc820f5bf20 sp=0xc820f5be48
runtime.main()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:188 +0x2b0 fp=0xc820f5bf70 sp=0xc820f5bf20
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc820f5bf78 sp=0xc820f5bf70

goroutine 2 [force gc (idle)]:
runtime.gopark(0x4c4f48, 0x975630, 0x451130, 0xf, 0x14, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc82002e758 sp=0xc82002e730
runtime.goparkunlock(0x975630, 0x451130, 0xf, 0xc820000114, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:268 +0x54 fp=0xc82002e790 sp=0xc82002e758
runtime.forcegchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:229 +0xb8 fp=0xc82002e7c0 sp=0xc82002e790
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002e7c8 sp=0xc82002e7c0
created by runtime.init.4
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:218 +0x2b

goroutine 3 [GC sweep wait]:
runtime.gopark(0x4c4f48, 0x9757a0, 0x44c8b0, 0xd, 0x4cb14, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc82002ef48 sp=0xc82002ef20
runtime.goparkunlock(0x9757a0, 0x44c8b0, 0xd, 0x14, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:268 +0x54 fp=0xc82002ef80 sp=0xc82002ef48
runtime.bgsweep(0xc82001c0e0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcsweep.go:79 +0x14d fp=0xc82002efb8 sp=0xc82002ef80
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002efc0 sp=0xc82002efb8
created by runtime.gcenable
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:191 +0x53

goroutine 4 [finalizer wait]:
runtime.gopark(0x4c4f48, 0xa94cd8, 0x450d20, 0xe, 0x14, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc82002f718 sp=0xc82002f6f0
runtime.goparkunlock(0xa94cd8, 0x450d20, 0xe, 0x14, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:268 +0x54 fp=0xc82002f750 sp=0xc82002f718
runtime.runfinq()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mfinal.go:158 +0xaa fp=0xc82002f7c0 sp=0xc82002f750
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002f7c8 sp=0xc82002f7c0
created by runtime.createfing
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mfinal.go:139 +0x60

goroutine 5 [GC worker (idle)]:
runtime.gopark(0xc82074e008, 0xc82002ffa0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc82002ff40 sp=0xc82002ff18
runtime.gcBgMarkWorker(0xc82001e000)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc82002ffb8 sp=0xc82002ff40
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002ffc0 sp=0xc82002ffb8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 17 [garbage collection]:
runtime.systemstack_switch()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:245 fp=0xc82002a510 sp=0xc82002a508
runtime.gcMarkTermination()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1182 +0x136 fp=0xc82002a720 sp=0xc82002a510
runtime.gcMarkDone()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1146 +0x29e fp=0xc82002a740 sp=0xc82002a720
runtime.gcBgMarkWorker(0xc82001f500)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1480 +0x488 fp=0xc82002a7b8 sp=0xc82002a740
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002a7c0 sp=0xc82002a7b8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 33 [GC worker (idle)]:
runtime.gopark(0xc820752000, 0xc8204507a0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc820450740 sp=0xc820450718
runtime.gcBgMarkWorker(0xc820020a00)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc8204507b8 sp=0xc820450740
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc8204507c0 sp=0xc8204507b8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 18 [GC worker (idle)]:
runtime.gopark(0xc82047c020, 0xc82002afa0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc82002af40 sp=0xc82002af18
runtime.gcBgMarkWorker(0xc820022000)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc82002afb8 sp=0xc82002af40
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc82002afc0 sp=0xc82002afb8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 6 [GC worker (idle)]:
runtime.gopark(0xc820762008, 0xc8200307a0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc820030740 sp=0xc820030718
runtime.gcBgMarkWorker(0xc820023500)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc8200307b8 sp=0xc820030740
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc8200307c0 sp=0xc8200307b8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 7 [GC worker (idle)]:
runtime.gopark(0xc820712590, 0xc820030fa0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc820030f40 sp=0xc820030f18
runtime.gcBgMarkWorker(0xc820024a00)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc820030fb8 sp=0xc820030f40
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc820030fc0 sp=0xc820030fb8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 8 [GC worker (idle)]:
runtime.gopark(0xc820760008, 0xc8200317a0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc820031740 sp=0xc820031718
runtime.gcBgMarkWorker(0xc820026000)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc8200317b8 sp=0xc820031740
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc8200317c0 sp=0xc8200317b8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92

goroutine 9 [GC worker (idle)]:
runtime.gopark(0xc820bb6010, 0xc820031fa0, 0x46eb40, 0x10, 0x14, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:262 +0x163 fp=0xc820031f40 sp=0xc820031f18
runtime.gcBgMarkWorker(0xc820027500)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1403 +0xda fp=0xc820031fb8 sp=0xc820031f40
runtime.goexit()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc820031fc0 sp=0xc820031fb8
created by runtime.gcBgMarkStartWorkers
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1330 +0x92
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc820067cf8 sp=0xc820067ce0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc820067d48 sp=0xc820067cf8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc820067d50 sp=0xc820067d48
runtime.lfstackpop(0x976bc8, 0x1eeec)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc820067d88 sp=0xc820067d50
runtime.getempty(0x65, 0x2000000000c03)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc820067db8 sp=0xc820067d88
runtime.(*gcWork).init(0xc820067e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc820067dd0 sp=0xc820067db8
runtime.(*gcWork).get(0xc820067e58, 0xc820067e2c)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc820067e00 sp=0xc820067dd0
runtime.gcDrain(0xc820067e58, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc820067e38 sp=0xc820067e00
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc820067e88 sp=0xc820067e38
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc820067ea8 sp=0xc820067e88
runtime.findrunnable(0xc82001e000, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0xc820067f28 sp=0xc820067ea8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0xc820067f60 sp=0xc820067f28
runtime.park_m(0xc820000d80)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0xc820067f88 sp=0xc820067f60
runtime.mcall(0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0xc820067f98 sp=0xc820067f88
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc820045cf8 sp=0xc820045ce0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc820045d48 sp=0xc820045cf8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc820045d50 sp=0xc820045d48
runtime.lfstackpop(0x976bc8, 0xc82002f320)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc820045d88 sp=0xc820045d50
runtime.getempty(0x65, 0xc000000903)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc820045db8 sp=0xc820045d88
runtime.(*gcWork).init(0xc820045e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc820045dd0 sp=0xc820045db8
runtime.(*gcWork).get(0xc820045e58, 0xc820045e2c)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc820045e00 sp=0xc820045dd0
runtime.gcDrain(0xc820045e58, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc820045e38 sp=0xc820045e00
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc820045e88 sp=0xc820045e38
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc820045ea8 sp=0xc820045e88
runtime.findrunnable(0xc820023500, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0xc820045f28 sp=0xc820045ea8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0xc820045f60 sp=0xc820045f28
runtime.park_m(0xc820000f00)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0xc820045f88 sp=0xc820045f60
runtime.mcall(0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0xc820045f98 sp=0xc820045f88
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0x7fff5fbfe618 sp=0x7fff5fbfe600
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0x7fff5fbfe668 sp=0x7fff5fbfe618
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0x7fff5fbfe670 sp=0x7fff5fbfe668
runtime.lfstackpop(0x976bc8, 0xc82002faf0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0x7fff5fbfe6a8 sp=0x7fff5fbfe670
runtime.getempty(0x65, 0xbc00000703)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0x7fff5fbfe6d8 sp=0x7fff5fbfe6a8
runtime.(*gcWork).init(0x7fff5fbfe778)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0x7fff5fbfe6f0 sp=0x7fff5fbfe6d8
runtime.(*gcWork).get(0x7fff5fbfe778, 0x7fff5fbfe74c)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0x7fff5fbfe720 sp=0x7fff5fbfe6f0
runtime.gcDrain(0x7fff5fbfe778, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0x7fff5fbfe758 sp=0x7fff5fbfe720
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0x7fff5fbfe7a8 sp=0x7fff5fbfe758
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0x7fff5fbfe7c8 sp=0x7fff5fbfe7a8
runtime.findrunnable(0xc820020a00, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0x7fff5fbfe848 sp=0x7fff5fbfe7c8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0x7fff5fbfe880 sp=0x7fff5fbfe848
runtime.park_m(0xc82044a000)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0x7fff5fbfe8a8 sp=0x7fff5fbfe880
runtime.mcall(0x7fff5fbfe8d0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0x7fff5fbfe8b8 sp=0x7fff5fbfe8a8
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc820069dd8 sp=0xc820069dc0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc820069e28 sp=0xc820069dd8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc820069e30 sp=0xc820069e28
runtime.lfstackpop(0x976bc8, 0x4)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc820069e68 sp=0xc820069e30
runtime.getempty(0x65, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc820069e98 sp=0xc820069e68
runtime.(*gcWork).init(0xc820069f50)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc820069eb0 sp=0xc820069e98
runtime.(*gcWork).get(0xc820069f50, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc820069ee0 sp=0xc820069eb0
runtime.gcDrain(0xc820069f50, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc820069f18 sp=0xc820069ee0
runtime.gcMark(0x9034bb980)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1560 +0xf9 fp=0xc820069f78 sp=0xc820069f18
runtime.gcMarkTermination.func1()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1174 +0x23 fp=0xc820069f88 sp=0xc820069f78
runtime.systemstack(0xc82001f500)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:291 +0x79 fp=0xc820069f90 sp=0xc820069f88
runtime.mstart()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1051 fp=0xc820069f98 sp=0xc820069f90
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc8204a5cf8 sp=0xc8204a5ce0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc8204a5d48 sp=0xc8204a5cf8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc8204a5d50 sp=0xc8204a5d48
runtime.lfstackpop(0x976bc8, 0x3)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc8204a5d88 sp=0xc8204a5d50
runtime.getempty(0x65, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc8204a5db8 sp=0xc8204a5d88
runtime.(*gcWork).init(0xc8204a5e58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc8204a5dd0 sp=0xc8204a5db8
runtime.(*gcWork).get(0xc8204a5e58, 0xc800000001)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc8204a5e00 sp=0xc8204a5dd0
runtime.gcDrain(0xc8204a5e58, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc8204a5e38 sp=0xc8204a5e00
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc8204a5e88 sp=0xc8204a5e38
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc8204a5ea8 sp=0xc8204a5e88
runtime.findrunnable(0xc820024a00, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0xc8204a5f28 sp=0xc8204a5ea8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0xc8204a5f60 sp=0xc8204a5f28
runtime.park_m(0xc820001080)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0xc8204a5f88 sp=0xc8204a5f60
runtime.mcall(0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0xc8204a5f98 sp=0xc8204a5f88
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc820065be0 sp=0xc820065bc8
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc820065c30 sp=0xc820065be0
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc820065c38 sp=0xc820065c30
runtime.lfstackpop(0x976bc8, 0xc820065d98)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc820065c70 sp=0xc820065c38
runtime.getempty(0x65, 0x1d03)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc820065ca0 sp=0xc820065c70
runtime.(*gcWork).init(0xc820065d40)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc820065cb8 sp=0xc820065ca0
runtime.(*gcWork).get(0xc820065d40, 0xc820065d14)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc820065ce8 sp=0xc820065cb8
runtime.gcDrain(0xc820065d40, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc820065d20 sp=0xc820065ce8
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc820065d70 sp=0xc820065d20
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc820065d90 sp=0xc820065d70
runtime.gcstopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1742 +0x128 fp=0xc820065dc0 sp=0xc820065d90
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2039 +0x9c fp=0xc820065df8 sp=0xc820065dc0
runtime.goschedImpl(0xc820000180)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2155 +0x134 fp=0xc820065e10 sp=0xc820065df8
runtime.gopreempt_m(0xc820000180)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2170 +0x32 fp=0xc820065e20 sp=0xc820065e10
runtime.newstack()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/stack.go:932 +0xa8c fp=0xc820065f90 sp=0xc820065e20
runtime.morestack()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:359 +0x7f fp=0xc820065f98 sp=0xc820065f90
[signal 0xb code=0x1 addr=0x350d35118 pc=0xedd75]

runtime stack:
runtime.throw(0x4971e0, 0x2a)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/panic.go:547 +0x90 fp=0xc82003fcf8 sp=0xc82003fce0
runtime.sigpanic()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/sigpanic_unix.go:12 +0x5a fp=0xc82003fd48 sp=0xc82003fcf8
runtime/internal/atomic.Load64(0x350d35118, 0x350d3511ff961)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/internal/atomic/atomic_amd64x.go:26 +0x5 fp=0xc82003fd50 sp=0xc82003fd48
runtime.lfstackpop(0x976bc8, 0x1)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/lfstack.go:38 +0x6d fp=0xc82003fd88 sp=0xc82003fd50
runtime.getempty(0x65, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:341 +0x3b fp=0xc82003fdb8 sp=0xc82003fd88
runtime.(*gcWork).init(0xc82003fe58)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:97 +0x20 fp=0xc82003fdd0 sp=0xc82003fdb8
runtime.(*gcWork).get(0xc82003fe58, 0xc800000001)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcwork.go:172 +0x38 fp=0xc82003fe00 sp=0xc82003fdd0
runtime.gcDrain(0xc82003fe58, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgcmark.go:831 +0x122 fp=0xc82003fe38 sp=0xc82003fe00
runtime.gchelper()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/mgc.go:1806 +0x7e fp=0xc82003fe88 sp=0xc82003fe38
runtime.stopm()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1541 +0x13f fp=0xc82003fea8 sp=0xc82003fe88
runtime.findrunnable(0xc820027500, 0x0)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:1976 +0x739 fp=0xc82003ff28 sp=0xc82003fea8
runtime.schedule()
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2075 +0x24f fp=0xc82003ff60 sp=0xc82003ff28
runtime.park_m(0xc820001380)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/proc.go:2140 +0x18b fp=0xc82003ff88 sp=0xc82003ff60
runtime.mcall(0x58121)
	/opt/boxen/homebrew/Cellar/go/1.6.2/libexec/src/runtime/asm_amd64.s:233 +0x5b fp=0xc82003ff98 sp=0xc82003ff88