Running GO server crashes

[afurmanov]

On my machine the stack is (when accessing http://localhost:3001/):

2014/03/26 21:39:20 http: panic serving [::1]:65509: runtime error: index out of range
goroutine 4 [running]:
net/http.func·007()
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1022 +0xac
main.httpHandler(0xc20009db40, 0xc2000b35b0, 0xc20009e410)
    /Users/nbdev/w/lang_bench/go/app.go:21 +0x3e0
net/http.HandlerFunc.ServeHTTP(0x267798, 0xc20009db40, 0xc2000b35b0, 0xc20009e410)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1149 +0x3e
net/http.(*ServeMux).ServeHTTP(0xc20009b450, 0xc20009db40, 0xc2000b35b0, 0xc20009e410)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1416 +0x11d
net/http.serverHandler.ServeHTTP(0xc200098410, 0xc20009db40, 0xc2000b35b0, 0xc20009e410)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1517 +0x16c
net/http.(*conn).serve(0xc2000b2120)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1096 +0x765
created by net/http.(*Server).Serve
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1564 +0x266
2014/03/26 21:39:22 http: panic serving [::1]:65510: runtime error: index out of range
goroutine 5 [running]:
net/http.func·007()
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1022 +0xac
main.httpHandler(0xc20009db40, 0xc2000b37e0, 0xc20009e4e0)
    /Users/nbdev/w/lang_bench/go/app.go:21 +0x3e0
net/http.HandlerFunc.ServeHTTP(0x267798, 0xc20009db40, 0xc2000b37e0, 0xc20009e4e0)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1149 +0x3e
net/http.(*ServeMux).ServeHTTP(0xc20009b450, 0xc20009db40, 0xc2000b37e0, 0xc20009e4e0)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1416 +0x11d
net/http.serverHandler.ServeHTTP(0xc200098410, 0xc20009db40, 0xc2000b37e0, 0xc20009e4e0)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1517 +0x16c
net/http.(*conn).serve(0xc2000b2240)
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1096 +0x765
created by net/http.(*Server).Serve
    /usr/local/Cellar/go/1.1.2/libexec/src/pkg/net/http/server.go:1564 +0x266