diff --git a/rtiow/Cargo.lock b/rtiow/Cargo.lock
index 8a592dc..35160eb 100644
--- a/rtiow/Cargo.lock
+++ b/rtiow/Cargo.lock
@@ -1,13 +1,5 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "MacTypes-sys"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "actix"
 version = "0.7.9"
@@ -285,11 +277,6 @@ name = "build_const"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "byteorder"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "byteorder"
 version = "1.3.1"
@@ -367,23 +354,6 @@ dependencies = [
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "core-foundation"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "core-foundation-sys"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "core_affinity"
 version = "0.5.9"
@@ -642,14 +612,6 @@ name = "encoding_index_tests"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "encoding_rs"
-version = "0.8.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "error-chain"
 version = "0.5.0"
@@ -702,19 +664,6 @@ name = "fnv"
 version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "foreign-types"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "foreign-types-shared"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -806,44 +755,6 @@ name = "httparse"
 version = "1.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "hyper"
-version = "0.12.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "h2 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.16 (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)",
- "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-executor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-io 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.8 (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 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-timer 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "want 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "hyper-tls"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.24 (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 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "idna"
 version = "0.1.5"
@@ -961,16 +872,6 @@ name = "libc"
 version = "0.2.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "libflate"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "linked-hash-map"
 version = "0.4.2"
@@ -1110,23 +1011,6 @@ dependencies = [
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "native-tls"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl 0.10.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.41 (registry+https://github.com/rust-lang/crates.io-index)",
- "schannel 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "security-framework 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "security-framework-sys 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "net2"
 version = "0.2.33"
@@ -1142,11 +1026,6 @@ name = "nodrop"
 version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "nom"
-version = "1.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "nom"
 version = "4.2.0"
@@ -1205,35 +1084,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "openssl"
-version = "0.10.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.41 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "openssl-probe"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "openssl-sys"
-version = "0.9.41"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (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)",
-]
-
 [[package]]
 name = "owning_ref"
 version = "0.4.0"
@@ -1303,11 +1153,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "pkg-config"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "png"
 version = "0.12.0"
@@ -1327,38 +1172,6 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "procinfo"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "nom 1.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "prometheus"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "procinfo 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "protobuf 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "reqwest 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "protobuf"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "quick-error"
 version = "1.2.2"
@@ -1551,43 +1364,6 @@ dependencies = [
  "ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "remove_dir_all"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "reqwest"
-version = "0.9.10"
-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 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "encoding_rs 0.8.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.24 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libflate 0.1.20 (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)",
- "mime_guess 2.0.0-alpha.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "native-tls 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.88 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_urlencoded 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-executor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-io 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-timer 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "resolv-conf"
 version = "0.6.2"
@@ -1622,7 +1398,6 @@ dependencies = [
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "prometheus 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.88 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.88 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1636,14 +1411,6 @@ name = "rustc-demangle"
 version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rustc_version"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -1670,15 +1437,6 @@ dependencies = [
  "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "schannel"
-version = "0.1.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "scoped_threadpool"
 version = "0.1.9"
@@ -1689,32 +1447,6 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "security-framework"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "security-framework-sys 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
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-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "MacTypes-sys 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
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-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -1804,11 +1536,6 @@ dependencies = [
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "stable_deref_trait"
 version = "1.1.1"
@@ -1876,19 +1603,6 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "tempfile"
-version = "3.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.51 (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 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "termcolor"
 version = "0.3.6"
@@ -2206,11 +1920,6 @@ dependencies = [
  "trust-dns-proto 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "try-lock"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "ucd-util"
 version = "0.1.3"
@@ -2322,11 +2031,6 @@ dependencies = [
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "vcpkg"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "vec_map"
 version = "0.8.1"
@@ -2347,16 +2051,6 @@ dependencies = [
  "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "want"
-version = "0.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "widestring"
 version = "0.2.2"
@@ -2433,7 +2127,6 @@ dependencies = [
 ]
 
 [metadata]
-"checksum MacTypes-sys 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "eaf9f0d0b1cc33a4d2aee14fb4b2eac03462ef4db29c8ac4057327d8a71ad86f"
 "checksum actix 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6c616db5fa4b0c40702fb75201c2af7f8aa8f3a2e2c1dda3b0655772aa949666"
 "checksum actix-net 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "8bebfbe6629e0131730746718c9e032b58f02c6ce06ed7c982b9fef6c8545acd"
 "checksum actix-web 0.7.18 (registry+https://github.com/rust-lang/crates.io-index)" = "e9f33c941e5e69a58a6bfef33853228042ed3799fc4b5a4923a36a85776fb690"
@@ -2457,7 +2150,6 @@ dependencies = [
 "checksum brotli-sys 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4445dea95f4c2b41cde57cc9fee236ae4dbae88d8fcbdb4750fc1bb5d86aaecd"
 "checksum brotli2 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0cb036c3eade309815c15ddbacec5b22c4d1f3983a774ab2eac2e3e9ea85568e"
 "checksum build_const 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "39092a32794787acd8525ee150305ff051b0aa6cc2abaf193924f5ab05425f39"
-"checksum byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0fc10e8cc6b2580fda3f36eb6dc5316657f812a3df879a44a66fc9f0fdbc4855"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "40ade3d27603c2cb345eb0912aec461a6dec7e06a4ae48589904e808335c7afa"
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@@ -2663,7 +2329,6 @@ dependencies = [
 "checksum trust-dns-proto 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0838272e89f1c693b4df38dc353412e389cf548ceed6f9fd1af5a8d6e0e7cf74"
 "checksum trust-dns-proto 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "09144f0992b0870fa8d2972cc069cbf1e3c0fda64d1f3d45c4d68d0e0b52ad4e"
 "checksum trust-dns-resolver 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8a9f877f7a1ad821ab350505e1f1b146a4960402991787191d6d8cab2ce2de2c"
-"checksum try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e604eb7b43c06650e854be16a2a03155743d3752dd1c943f6829e26b7a36e382"
 "checksum ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535c204ee4d8434478593480b8f86ab45ec9aae0e83c568ca81abf0fd0e88f86"
 "checksum unicase 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7f4765f83163b74f957c797ad9253caf97f103fb064d3999aea9568d09fc8a33"
 "checksum unicase 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9d3218ea14b4edcaccfa0df0a64a3792a2c32cc706f1b336e48867f9d3147f90"
@@ -2679,11 +2344,9 @@ dependencies = [
 "checksum v_escape 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c8b50688edb86f4c092a1a9fe8bda004b0faa3197100897653809e97e09a2814"
 "checksum v_escape_derive 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7cd994c63b487fef7aad31e5394ec04b9e24de7b32ea5251c9fb499cd2cbf44c"
 "checksum v_htmlescape 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "020cae817dc82693aa523f01087b291b1c7a9ac8cea5c12297963f21769fb27f"
-"checksum vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "def296d3eb3b12371b2c7d0e83bfe1403e4db2d7a0bba324a12b21c4ee13143d"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"
-"checksum want 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "797464475f30ddb8830cc529aaaae648d581f99e2036a928877dfde027ddf6b3"
 "checksum widestring 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7157704c2e12e3d2189c507b7482c52820a16dfa4465ba91add92f266667cadb"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
diff --git a/rtiow/Cargo.toml b/rtiow/Cargo.toml
index 825be4b..e6772e3 100644
--- a/rtiow/Cargo.toml
+++ b/rtiow/Cargo.toml
@@ -25,11 +25,6 @@ serde_json = "1.0.41"
 stderrlog = "0.4.1"
 structopt = "0.2.10"
 
-[dependencies.prometheus]
-features = ["process", "push"]
-version = "0.7.0"
-optional = true
-
 [dev-dependencies]
 criterion = "0.2"
 
@@ -39,4 +34,3 @@ debug = true
 
 [features]
 profile = ["cpuprofiler"]
-prom = ["prometheus"]
diff --git a/rtiow/build_all_features.sh b/rtiow/build_all_features.sh
index f4c1027..5e4f62d 100755
--- a/rtiow/build_all_features.sh
+++ b/rtiow/build_all_features.sh
@@ -1,6 +1,4 @@
 set -e
 export RUSTFLAGS="-D warnings"
 cargo build
-cargo build --features=prom
 cargo build --features=profile
-cargo build --features=prom,profile
diff --git a/rtiow/src/bin/tracer.rs b/rtiow/src/bin/tracer.rs
index b893b1e..d0e90f3 100644
--- a/rtiow/src/bin/tracer.rs
+++ b/rtiow/src/bin/tracer.rs
@@ -7,87 +7,16 @@ extern crate rand;
 extern crate rtiow;
 extern crate stderrlog;
 extern crate structopt;
-#[macro_use]
-#[cfg(feature = "prom")]
-extern crate lazy_static;
-#[macro_use]
-#[cfg(feature = "prom")]
-extern crate prometheus;
 
 use std::fs;
 
-use chrono::DateTime;
-use chrono::Utc;
 #[cfg(feature = "profile")]
 use cpuprofiler::PROFILER;
-#[cfg(feature = "prom")]
-use prometheus::Encoder;
 use structopt::StructOpt;
 
-use rtiow::renderer::opt_hash;
 use rtiow::renderer::render;
 use rtiow::renderer::Opt;
 
-#[cfg(feature = "prom")]
-lazy_static! {
-    static ref RUNTIME_COUNTER: prometheus::Gauge =
-        register_gauge!("render_time_seconds", "Wall clock time for render").unwrap();
-}
-
-#[cfg(not(feature = "prom"))]
-fn push_metrics(_push_gateway_addr: &str, _instance: String, start_time: &DateTime<Utc>) {
-    let runtime = (Utc::now() - *start_time).to_std().unwrap();
-    info!(
-        "Render time {}.{} seconds",
-        runtime.as_secs(),
-        runtime.subsec_millis()
-    );
-}
-
-#[cfg(feature = "prom")]
-fn push_metrics(push_gateway_addr: &str, instance: String, start_time: &DateTime<Utc>) {
-    let runtime = (Utc::now() - *start_time).to_std().unwrap();
-    info!(
-        "Render time {}.{} seconds",
-        runtime.as_secs(),
-        runtime.subsec_millis()
-    );
-
-    RUNTIME_COUNTER.set(runtime.as_secs() as f64 + f64::from(runtime.subsec_nanos()) * 1e-9);
-
-    let metric_families = prometheus::gather();
-    let encoder = prometheus::TextEncoder::new();
-    let stdout = std::io::stdout();
-    println!("Prometheus metrics:");
-    encoder
-        .encode(&metric_families, &mut stdout.lock())
-        .unwrap();
-
-    if push_gateway_addr.is_empty() {
-        info!("Logging stats to push gateway disabled");
-        return;
-    }
-
-    if let Err(err) = prometheus::push_metrics(
-        "tracer",
-        labels! {
-            "instance".to_owned() => instance,
-            "start_time".to_owned() => start_time.to_rfc3339(),
-            "timestamp".to_owned() => start_time.timestamp().to_string(),
-        },
-        push_gateway_addr,
-        metric_families,
-        None,
-        // TODO(wathiede): auth?
-        // Some(prometheus::BasicAuthentication {
-        //     username: "user".to_owned(),
-        //     password: "pass".to_owned(),
-        // }),
-    ) {
-        error!("Failed to push to prometheus gateway: {}", err);
-    }
-}
-
 #[cfg(not(feature = "profile"))]
 struct MockTimer;
 
@@ -120,7 +49,6 @@ fn main() -> Result<(), std::io::Error> {
         .timestamp(stderrlog::Timestamp::Millisecond)
         .init()
         .unwrap();
-    let start_time: DateTime<Utc> = Utc::now();
     let opt = Opt::from_args();
     info!("{:?}", opt);
     let scene = opt.model.scene(&opt);
@@ -140,7 +68,6 @@ fn main() -> Result<(), std::io::Error> {
         info!("Saving pprof to {}", pprof_path.to_string_lossy());
         PROFILER.lock().unwrap().stop().unwrap();
     }
-    push_metrics(&opt.push_gateway, opt_hash(&opt), &start_time);
 
     res
 }
diff --git a/rtiow/src/lib.rs b/rtiow/src/lib.rs
index 5607118..2dbc598 100644
--- a/rtiow/src/lib.rs
+++ b/rtiow/src/lib.rs
@@ -31,6 +31,3 @@ extern crate rand;
 extern crate structopt;
 #[macro_use]
 extern crate serde_derive;
-#[macro_use]
-#[cfg(feature = "prom")]
-extern crate prometheus;
diff --git a/rtiow/src/renderer.rs b/rtiow/src/renderer.rs
index dad31a8..24cb7c2 100644
--- a/rtiow/src/renderer.rs
+++ b/rtiow/src/renderer.rs
@@ -14,8 +14,6 @@ use std::thread;
 use std::time;
 
 use core_affinity;
-#[cfg(feature = "prom")]
-use lazy_static::lazy_static;
 use num_cpus;
 use rand;
 use rand::Rng;
@@ -32,25 +30,6 @@ use crate::texture::ConstantTexture;
 use crate::texture::EnvMap;
 use crate::vec3::Vec3;
 
-#[cfg(feature = "prom")]
-lazy_static! {
-    static ref RAY_COUNTER: prometheus::CounterVec =
-        register_counter_vec!("rays", "Number of rays fired", &["level"]).unwrap();
-}
-
-#[cfg(not(feature = "prom"))]
-struct MockPrometheus;
-#[cfg(not(feature = "prom"))]
-impl MockPrometheus {
-    fn with_label_values(&self, _: &[&str]) -> &MockPrometheus {
-        self
-    }
-    fn inc(&self) {}
-}
-
-#[cfg(not(feature = "prom"))]
-static RAY_COUNTER: MockPrometheus = MockPrometheus {};
-
 #[derive(Debug)]
 pub enum Model {
     Bench,
@@ -130,13 +109,6 @@ impl std::string::ToString for Model {
 #[derive(Debug, StructOpt)]
 #[structopt(name = "tracer", about = "An experimental ray tracer.")]
 pub struct Opt {
-    /// Prometheus push gateway address, use "" to disable
-    #[structopt(
-        short = "a",
-        long = "pushgateway",
-        default_value = "pushgateway.z.xinu.tv:80"
-    )]
-    pub push_gateway: String,
     /// Image width
     #[structopt(short = "w", long = "width", default_value = "512")]
     pub width: usize,
@@ -239,7 +211,6 @@ fn color(
     global_illumination: bool,
     env_map: &Option<EnvMap>,
 ) -> (Vec3, usize) {
-    RAY_COUNTER.with_label_values(&[&depth.to_string()]).inc();
     if let Some(rec) = world.hit(r, 0.001, std::f32::MAX) {
         let (u, v) = rec.uv;
         let emitted = rec.material.emitted(u, v, rec.p);
diff --git a/rtiow/watch_all_features.sh b/rtiow/watch_all_features.sh
index a7f9d45..e4c5517 100755
--- a/rtiow/watch_all_features.sh
+++ b/rtiow/watch_all_features.sh
@@ -1,5 +1,3 @@
 export RUSTFLAGS="-D warnings"
 cargo watch -x 'build' \
-  -x 'build --features=prom' \
   -x 'build --features=profile' \
-  -x 'build --features=prom,profile'