diff --git a/Cargo.lock b/Cargo.lock
index b746a06..1da06f2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -77,7 +77,7 @@ name = "backtrace-sys"
 version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -134,7 +134,7 @@ dependencies = [
  "oath 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quoted_printable 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "reqwest 0.9.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "reqwest 0.9.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.13.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rmpv 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rocket 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -245,7 +245,7 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.34"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -296,6 +296,25 @@ dependencies = [
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cookie_store"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cookie 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "publicsuffix 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "try_from 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.5.1"
@@ -397,7 +416,7 @@ version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -417,7 +436,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "devise_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -427,7 +446,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -449,7 +468,7 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -597,6 +616,14 @@ dependencies = [
  "backtrace 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "error-chain"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "backtrace 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "failure"
 version = "0.1.5"
@@ -612,7 +639,7 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -646,7 +673,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -764,7 +791,7 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.1.17"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -832,7 +859,7 @@ dependencies = [
  "mac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "markup5ever 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -871,13 +898,13 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.12.25"
+version = "0.12.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "h2 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "h2 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -914,7 +941,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -968,7 +995,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1059,7 +1086,7 @@ name = "libsqlite3-sys"
 version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1198,7 +1225,7 @@ name = "miniz_oxide_c_api"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1331,7 +1358,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1404,7 +1431,7 @@ name = "openssl-sys"
 version = "0.9.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1482,7 +1509,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "yansi 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1518,7 +1545,7 @@ dependencies = [
  "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_meta 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1585,6 +1612,18 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "publicsuffix"
+version = "1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "quick-error"
 version = "1.2.2"
@@ -1597,7 +1636,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "quote"
-version = "0.6.11"
+version = "0.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1736,7 +1775,7 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.1.52"
+version = "0.1.54"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1769,16 +1808,18 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.9.13"
+version = "0.9.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cookie 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cookie_store 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding_rs 0.8.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-tls 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.3.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1787,6 +1828,7 @@ dependencies = [
  "serde 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_urlencoded 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1801,7 +1843,7 @@ name = "ring"
 version = "0.13.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1852,7 +1894,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "devise 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "rocket_http 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "yansi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2018,7 +2060,7 @@ version = "1.0.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2155,7 +2197,7 @@ dependencies = [
  "phf_generator 0.7.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_shared 0.7.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "string_cache_shared 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2190,7 +2232,7 @@ version = "0.15.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2208,7 +2250,7 @@ version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2232,7 +2274,7 @@ dependencies = [
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2269,7 +2311,7 @@ version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2286,6 +2328,7 @@ dependencies = [
  "tokio-executor 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-threadpool 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-trace-core 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2412,6 +2455,14 @@ name = "try-lock"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "try_from"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "twoway"
 version = "0.1.8"
@@ -2674,7 +2725,7 @@ dependencies = [
  "crypto-mac 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "reqwest 0.9.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "reqwest 0.9.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "subtle 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "threadpool 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2710,13 +2761,14 @@ dependencies = [
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "206fdffcfa2df7cbe15601ef46c813fce0965eb3286db6b56c583b814b51c81c"
-"checksum cc 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)" = "30f813bf45048a18eda9190fd3c6b78644146056740c43172a5a3699118588fd"
+"checksum cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "5e5f3fee5eeb60324c2781f1e41286bdee933850fff9b3c672587fed5ec58c83"
 "checksum cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "11d43355396e872eefb45ce6342e4374ed7bc2b3a502d1b28e36d6e23c05d1f4"
 "checksum chashmap 2.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ff41a3c2c1e39921b9003de14bf0439c7b63a9039637c291e1a64925d8ddfa45"
 "checksum chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "45912881121cb26fad7c38c17ba7daa18764771836b34fab7d3fbd93ed633878"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
 "checksum cookie 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1465f8134efa296b4c19db34d909637cb2bf0f7aaf21299e23e18fa29ac557cf"
+"checksum cookie_store 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b0d2f2ecb21dce00e2453268370312978af9b8024020c7a37ae2cc6dbbe64685"
 "checksum core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "286e0b41c3a20da26536c6000a280585d519fd07b3956b43aed8a79e9edce980"
 "checksum core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "716c271e8613ace48344f723b60b900a93150271e5be206212d052bbc0883efa"
 "checksum crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d663548de7f5cca343f1e0a48d14dcfb0e9eb4e079ec58883b7251539fa10aeb"
@@ -2751,6 +2803,7 @@ dependencies = [
 "checksum encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a246d82be1c9d791c5dfde9a2bd045fc3cbba3fa2b11ad558f27d01712f00569"
 "checksum encoding_rs 0.8.17 (registry+https://github.com/rust-lang/crates.io-index)" = "4155785c79f2f6701f185eb2e6b4caf0555ec03477cb4c70db67b465311620ed"
 "checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
+"checksum error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "07e791d3be96241c77c43846b665ef1384606da2cd2a48730abe606a12906e02"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
 "checksum fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
@@ -2772,7 +2825,7 @@ dependencies = [
 "checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
 "checksum generic-array 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe043cf9b85297937897087de81f590361686e1ac2d4d471b45435de5dfb6a6"
 "checksum generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
-"checksum h2 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "910a5e7be6283a9c91b3982fa5188368c8719cce2a3cf3b86048673bf9d9c36b"
+"checksum h2 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)" = "85ab6286db06040ddefb71641b50017c06874614001a134b423783e2db2920bd"
 "checksum handlebars 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d82e5750d8027a97b9640e3fefa66bbaf852a35228e1c90790efd13c4b09c166"
 "checksum hmac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdb5aa9647ba4711e9d6968dc1c810cd23989ed435443ca962e1bf6d8b8b83ff"
 "checksum hmac 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f127a908633569f208325f86f71255d3363c79721d7f9fe31cd5569908819771"
@@ -2781,7 +2834,7 @@ dependencies = [
 "checksum http 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "eed324f0f0daf6ec10c474f150505af2c143f251722bf9dbd1261bd1f2ee2c1a"
 "checksum httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e8734b0cfd3bc3e101ec59100e101c2eecd19282202e87808b3037b442777a83"
 "checksum hyper 0.10.15 (registry+https://github.com/rust-lang/crates.io-index)" = "df0caae6b71d266b91b4a83111a61d2b94ed2e2bea024c532b933dcff867e58c"
-"checksum hyper 0.12.25 (registry+https://github.com/rust-lang/crates.io-index)" = "7d5b6658b016965ae301fa995306db965c93677880ea70765a84235a96eae896"
+"checksum hyper 0.12.27 (registry+https://github.com/rust-lang/crates.io-index)" = "4f2777434f26af6e4ce4fdcdccd3bed9d861d11e87bcbe72c0f51ddaca8ff848"
 "checksum hyper-sync-rustls 0.3.0-rc.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6d1a443a90413a118ac6739e024f6a5180aa3b3f43f7de65f9d388a961cff19b"
 "checksum hyper-tls 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3a800d6aa50af4b5850b2b0f659625ce9504df908e9733b635720483be26174f"
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
@@ -2857,9 +2910,10 @@ dependencies = [
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
 "checksum precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 "checksum proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)" = "4d317f9caece796be1980837fd5cb3dfec5613ebdb04ad0956deea83ce168915"
+"checksum publicsuffix 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5afecba86dcf1e4fd610246f89899d1924fe12e1e89f555eb7c7f710f3c5ad1d"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
-"checksum quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)" = "cdd8e04bd9c52e0342b406469d494fcb033be4bdbe5c606016defbb1681411e1"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
 "checksum quoted_printable 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4126fa98c6d7b166e6a29a24ab96721d618759d803df6a8cb35d6140da475b5a"
 "checksum r2d2 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)" = "9dd8a293251281a4d02848925fcdbbc9f466ddb4965981bb06680359b3d12091"
 "checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
@@ -2874,11 +2928,11 @@ dependencies = [
 "checksum rand_pcg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "abf9b09b01790cfe0364f52bf32995ea3c39f4d2dd011eac241d2914146d0b44"
 "checksum rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cbf7e9e623549b0e21f6e97cf8ecf247c1a8fd2e8a992ae265314300b2455d5c"
 "checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
-"checksum redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)" = "d32b3053e5ced86e4bc0411fec997389532bf56b000e66cb4884eeeb41413d69"
+"checksum redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)" = "12229c14a0f65c4f1cb046a3b52047cdd9da1f4b30f8a39c5063c8bae515e252"
 "checksum regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "559008764a17de49a3146b234641644ed37d118d1ef641a0bb573d146edc6ce0"
 "checksum regex-syntax 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "dcfd8681eebe297b81d98498869d4aae052137651ad7b96822f09ceb690d0a96"
 "checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
-"checksum reqwest 0.9.13 (registry+https://github.com/rust-lang/crates.io-index)" = "3c4ef83e0beb14bfe38b9f01330a5bc8e965a9f9628690aa28383746dac1e925"
+"checksum reqwest 0.9.14 (registry+https://github.com/rust-lang/crates.io-index)" = "19c4c4990514fbd7a80380b826d81368ba6f6af61007ea142519ce47d72f6b0f"
 "checksum ring 0.13.5 (registry+https://github.com/rust-lang/crates.io-index)" = "2c4db68a2e35f3497146b7e4563df7d4773a2433230c5e4b448328e31740458a"
 "checksum rmp 0.8.7 (git+https://github.com/dani-garcia/msgpack-rust)" = "<none>"
 "checksum rmpv 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "29af0205707de955a396a1d3c657677c65f791ebabb63c0596c0b2fec0bf6325"
@@ -2946,6 +3000,7 @@ dependencies = [
 "checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
 "checksum traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
 "checksum try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e604eb7b43c06650e854be16a2a03155743d3752dd1c943f6829e26b7a36e382"
+"checksum try_from 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "283d3b89e1368717881a9d51dad843cc435380d8109c9e47d38780a324698d8b"
 "checksum twoway 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "59b11b2b5241ba34be09c3cc85a36e56e48f9888862e19cedf23336d35316ed1"
 "checksum typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1410f6f91f21d1612654e7cc69193b0334f909dcf2c790c4826254fbb86f8887"
 "checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
diff --git a/Cargo.toml b/Cargo.toml
index 1e844fa..3e2cff3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ rocket = { version = "0.4.0", features = ["tls"], default-features = false }
 rocket_contrib = "0.4.0"
 
 # HTTP client
-reqwest = "0.9.13"
+reqwest = "0.9.14"
 
 # multipart/form-data support
 multipart = { version = "0.16.1", features = ["server"], default-features = false }
diff --git a/rust-toolchain b/rust-toolchain
index 66f6c4e..ec48b52 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2019-03-14
+nightly-2019-04-11
diff --git a/src/api/core/two_factor.rs b/src/api/core/two_factor.rs
index 4525830..94cbc1e 100644
--- a/src/api/core/two_factor.rs
+++ b/src/api/core/two_factor.rs
@@ -787,7 +787,6 @@ fn _duo_api_request(method: &str, path: &str, params: &str) -> EmptyResult {
 
     use std::str::FromStr;
 
-    use chrono::Utc;
     use reqwest::{header::*, Client, Method};
 
     let ik = CONFIG.duo_ikey().unwrap();
diff --git a/src/crypto.rs b/src/crypto.rs
index 4cb46c4..e55e461 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -2,7 +2,7 @@
 // PBKDF2 derivation
 //
 
-use ring::{digest, pbkdf2};
+use ring::{digest, pbkdf2, hmac};
 
 static DIGEST_ALG: &digest::Algorithm = &digest::SHA256;
 const OUTPUT_LEN: usize = digest::SHA256_OUTPUT_LEN;
@@ -24,7 +24,6 @@ pub fn verify_password_hash(secret: &[u8], salt: &[u8], previous: &[u8], iterati
 //
 pub fn hmac_sign(key: &str, data:&str) -> String {
     use data_encoding::HEXLOWER;
-    use ring::{digest, hmac};
 
     let key = hmac::SigningKey::new(&digest::SHA1, key.as_bytes());
     let signature = hmac::sign(&key, data.as_bytes());
diff --git a/src/db/models/cipher.rs b/src/db/models/cipher.rs
index 47d2784..21cabb9 100644
--- a/src/db/models/cipher.rs
+++ b/src/db/models/cipher.rs
@@ -72,9 +72,7 @@ use crate::error::MapResult;
 /// Database methods
 impl Cipher {
     pub fn to_json(&self, host: &str, user_uuid: &str, conn: &DbConn) -> Value {
-        use super::Attachment;
         use crate::util::format_date;
-        use serde_json;
 
         let attachments = Attachment::find_by_cipher(&self.uuid, conn);
         let attachments_json: Vec<Value> = attachments.iter().map(|c| c.to_json(host)).collect();
diff --git a/src/db/models/user.rs b/src/db/models/user.rs
index 91d018d..cde12af 100644
--- a/src/db/models/user.rs
+++ b/src/db/models/user.rs
@@ -113,8 +113,6 @@ use crate::error::MapResult;
 /// Database methods
 impl User {
     pub fn to_json(&self, conn: &DbConn) -> Value {
-        use super::{TwoFactor, UserOrganization};
-
         let orgs = UserOrganization::find_by_user(&self.uuid, conn);
         let orgs_json: Vec<Value> = orgs.iter().map(|c| c.to_json(&conn)).collect();
         let twofactor_enabled = !TwoFactor::find_by_user(&self.uuid, conn).is_empty();