diff --git a/rtiow/Cargo.lock b/rtiow/Cargo.lock
index 3b6c875..5c0b173 100644
--- a/rtiow/Cargo.lock
+++ b/rtiow/Cargo.lock
@@ -737,14 +737,6 @@ dependencies = [
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "getopts"
-version = "0.2.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "gif"
 version = "0.10.1"
@@ -1615,14 +1607,12 @@ dependencies = [
  "cpuprofiler 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "criterion 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-channel 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "getopts 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
- "rayon 1.0.3 (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)",
  "stderrlog 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2508,7 +2498,6 @@ dependencies = [
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)" = "49e7653e374fe0d0c12de4250f0bdb60680b8c80eed558c5c7538eec9c89e21b"
 "checksum futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
-"checksum getopts 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "0a7292d30132fb5424b354f5dc02512a86e4c516fe544bb7a25e7f266951b797"
 "checksum gif 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4bca55ac1f213920ce3527ccd62386f1f15fa3f1714aeee1cf93f2c416903f"
 "checksum h2 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "ddb2b25a33e231484694267af28fec74ac63b5ccf51ee2065a5e313b834d836e"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
diff --git a/rtiow/Cargo.toml b/rtiow/Cargo.toml
index 19372a0..467cafa 100644
--- a/rtiow/Cargo.toml
+++ b/rtiow/Cargo.toml
@@ -14,13 +14,11 @@ askama = "0.7.1"
 chrono = "*"
 cpuprofiler = { version = "0.0.3", optional = true }
 crossbeam-channel = "0.3"
-getopts = "*"
 image = "0.19.0"
 lazy_static = "1.1.0"
 log = "0.4.5"
 num_cpus = "1.8.0"
 rand = "0.5.5"
-rayon = "1.0.2"
 serde = "1.0.79"
 serde_derive = "1.0.79"
 stderrlog = "0.4.1"
diff --git a/rtiow/src/lib.rs b/rtiow/src/lib.rs
index d4ccdec..25d808c 100644
--- a/rtiow/src/lib.rs
+++ b/rtiow/src/lib.rs
@@ -26,7 +26,6 @@ extern crate image;
 extern crate log;
 extern crate num_cpus;
 extern crate rand;
-extern crate rayon;
 #[macro_use]
 extern crate structopt;
 #[macro_use]