diff --git a/Cargo.lock b/Cargo.lock
index 2c5c2a1..95caf01 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -92,6 +92,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "arrayvec"
 version = "0.5.2"
@@ -133,17 +142,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "atty"
-version = "0.2.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
-dependencies = [
- "hermit-abi",
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.0.1"
@@ -505,19 +503,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "env_logger"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
-dependencies = [
- "atty",
- "humantime",
- "log",
- "regex",
- "termcolor",
-]
-
 [[package]]
 name = "fallible-iterator"
 version = "0.2.0"
@@ -896,12 +881,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05842d0d43232b23ccb7060ecb0f0626922c21f30012e97b767b30afd4a5d4b9"
 
-[[package]]
-name = "humantime"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
-
 [[package]]
 name = "hyper"
 version = "0.14.7"
@@ -1114,6 +1093,15 @@ dependencies = [
  "xml5ever",
 ]
 
+[[package]]
+name = "matchers"
+version = "0.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f099785f7595cc4b4553a174ce30dd7589ef93391ff414dbb67f62392b9e0ce1"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "matches"
 version = "0.1.8"
@@ -1123,7 +1111,7 @@ checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 [[package]]
 name = "matrix-sdk"
 version = "0.2.0"
-source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#ffea84b64aa172b9b153a76588f4f609bf15c441"
+source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#cd77441d1bf8318ecf4cc9e1886696558ea6ed7b"
 dependencies = [
  "backoff",
  "bytes",
@@ -1147,7 +1135,7 @@ dependencies = [
 [[package]]
 name = "matrix-sdk-base"
 version = "0.2.0"
-source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#ffea84b64aa172b9b153a76588f4f609bf15c441"
+source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#cd77441d1bf8318ecf4cc9e1886696558ea6ed7b"
 dependencies = [
  "chacha20poly1305",
  "dashmap",
@@ -1170,7 +1158,7 @@ dependencies = [
 [[package]]
 name = "matrix-sdk-common"
 version = "0.2.0"
-source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#ffea84b64aa172b9b153a76588f4f609bf15c441"
+source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#cd77441d1bf8318ecf4cc9e1886696558ea6ed7b"
 dependencies = [
  "async-trait",
  "futures",
@@ -1186,7 +1174,7 @@ dependencies = [
 [[package]]
 name = "matrix-sdk-crypto"
 version = "0.2.0"
-source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#ffea84b64aa172b9b153a76588f4f609bf15c441"
+source = "git+https://github.com/matrix-org/matrix-rust-sdk?branch=master#cd77441d1bf8318ecf4cc9e1886696558ea6ed7b"
 dependencies = [
  "aes-ctr",
  "aes-gcm",
@@ -1793,6 +1781,16 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-automata"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae1ded71d66a4a97f5e961fd0cb25a5f366a42a41570d16a763a69c092c26ae4"
+dependencies = [
+ "byteorder",
+ "regex-syntax",
+]
+
 [[package]]
 name = "regex-syntax"
 version = "0.6.25"
@@ -1844,8 +1842,9 @@ dependencies = [
 
 [[package]]
 name = "ruma"
-version = "0.0.3"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b4014a3def1ed10e7fa0fe28fec48418f2deb6135e7f5fe15901ba1302b581c"
 dependencies = [
  "assign",
  "js_int",
@@ -1860,8 +1859,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-api"
-version = "0.17.0-alpha.4"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51df85b3e2c4097abc60919864502083def5c3b12982b0c46f6431e5b1e1476d"
 dependencies = [
  "bytes",
  "http",
@@ -1876,8 +1876,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-api-macros"
-version = "0.17.0-alpha.4"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe79932728de6a753163f4f30acfd70ebe4355c35fc638edb3f47c7cf47ab128"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -1887,8 +1888,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-client-api"
-version = "0.10.0-alpha.3"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fda53002660ebdf6eca81102bf4362d0f9234a4d3f7a3e5f9878ed7c1f133843"
 dependencies = [
  "assign",
  "bytes",
@@ -1907,8 +1909,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-common"
-version = "0.5.0"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c87e1a95f3625cae17772e98b3479059e7aa18593fb623bcff498d32d399d956"
 dependencies = [
  "indexmap",
  "js_int",
@@ -1922,8 +1925,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-events"
-version = "0.22.0-alpha.3"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15c222b0f008461b00b039e76319c3184633346605b8201b24f54a6be99cbd98"
 dependencies = [
  "indoc",
  "js_int",
@@ -1937,8 +1941,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-events-macros"
-version = "0.22.0-alpha.3"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "270df7148218b4d45d11bc1621c4ce5da8571abaf2db3f407a4b0f983a48625c"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -1948,8 +1953,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-federation-api"
-version = "0.1.0-alpha.2"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40fe42fd5951c688b5c7b0c32ed74d973d21c33ba31f9d64d40bf4f98c01eb48"
 dependencies = [
  "js_int",
  "ruma-api",
@@ -1963,8 +1969,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-identifiers"
-version = "0.19.0"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b63396866eab1d0dafe5bd3c1af2e16f1f71a725fcc89a3e3f42572bc20c65a"
 dependencies = [
  "paste",
  "ruma-identifiers-macros",
@@ -1976,8 +1983,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-identifiers-macros"
-version = "0.19.0"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a77e9bf8fd334e944d40f041155d4950da75a9b64cd05046ffc8ea670ad4ad12"
 dependencies = [
  "quote",
  "ruma-identifiers-validation",
@@ -1987,12 +1995,14 @@ dependencies = [
 [[package]]
 name = "ruma-identifiers-validation"
 version = "0.3.0"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecb664a32ba1cccf0d5cec34bef6bfccc042b54b8b5f9610729a128fcdf569a5"
 
 [[package]]
 name = "ruma-serde"
-version = "0.3.1"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c888d69db1d5f134cbce7101f5610f1802966f359646ff48dbaf0f433d7bbd9f"
 dependencies = [
  "bytes",
  "form_urlencoded",
@@ -2005,8 +2015,9 @@ dependencies = [
 
 [[package]]
 name = "ruma-serde-macros"
-version = "0.3.1"
-source = "git+https://github.com/ruma/ruma?rev=e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6#e1ab817e0bef78cb8241d6d3c1ced7d6b414c7f6"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be418f3ee1593ebf1522d9ace1b1de0455bbcdd69c5d584c00d41e7717f8d0af"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -2176,6 +2187,15 @@ dependencies = [
  "opaque-debug",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79c719719ee05df97490f80a45acfc99e5a30ce98a1e4fb67aee422745ae14e3"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.3.0"
@@ -2497,7 +2517,6 @@ dependencies = [
  "byteorder",
  "combine",
  "dirs",
- "env_logger",
  "futures",
  "html2text",
  "indoc",
@@ -2516,19 +2535,11 @@ dependencies = [
  "thiserror",
  "tokio",
  "toml",
+ "tracing-subscriber",
  "url",
  "zerocopy",
 ]
 
-[[package]]
-name = "termcolor"
-version = "1.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "thiserror"
 version = "1.0.24"
@@ -2549,6 +2560,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8018d24e04c95ac8790716a5987d0fec4f8b27249ffa0f7d33f1369bdfb88cbd"
+dependencies = [
+ "once_cell",
+]
+
 [[package]]
 name = "time"
 version = "0.1.43"
@@ -2735,6 +2755,49 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tracing-log"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6923477a48e41c1951f1999ef8bb5a3023eb723ceadafe78ffb65dc366761e3"
+dependencies = [
+ "lazy_static",
+ "log",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-serde"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb65ea441fbb84f9f6748fd496cf7f63ec9af5bca94dd86456978d055e8eb28b"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa5553bf0883ba7c9cbe493b085c29926bd41b66afc31ff72cf17ff4fb60dcd5"
+dependencies = [
+ "ansi_term",
+ "chrono",
+ "lazy_static",
+ "matchers",
+ "regex",
+ "serde",
+ "serde_json",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+ "tracing-serde",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.3"
diff --git a/Cargo.toml b/Cargo.toml
index 93eb562..88de99b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ path = "src/migrate_cli.rs"
 
 [dependencies]
 log = "0.4"
-env_logger = "0.8"
+tracing-subscriber = "0.2"
 toml = "0.5"
 nom = "5"
 rand = "0.8"
diff --git a/src/bin/dicebot.rs b/src/bin/dicebot.rs
index d4ee65f..8be23db 100644
--- a/src/bin/dicebot.rs
+++ b/src/bin/dicebot.rs
@@ -1,7 +1,7 @@
 //Needed for nested Result handling from tokio. Probably can go away after 1.47.0.
 #![type_length_limit = "7605144"]
-use env_logger::Env;
 use log::error;
+use std::env;
 use std::sync::{Arc, RwLock};
 use tenebrous_dicebot::bot::DiceBot;
 use tenebrous_dicebot::config::*;
@@ -9,13 +9,18 @@ use tenebrous_dicebot::db::sqlite::Database;
 use tenebrous_dicebot::error::BotError;
 use tenebrous_dicebot::migrator;
 use tenebrous_dicebot::state::DiceBotState;
+use tracing_subscriber::filter::EnvFilter;
 
 #[tokio::main]
 async fn main() {
-    env_logger::Builder::from_env(
-        Env::default().default_filter_or("tenebrous_dicebot=info,dicebot=info"),
-    )
-    .init();
+    let filter = if env::var("RUST_LOG").is_ok() {
+        EnvFilter::from_default_env()
+    } else {
+        EnvFilter::new("tenebrous_dicebot=info,dicebot=info,refinery=info")
+    };
+
+    tracing_subscriber::fmt().with_env_filter(filter).init();
+
     match run().await {
         Ok(_) => (),
         Err(e) => error!("Error: {}", e),
diff --git a/src/bot.rs b/src/bot.rs
index a208882..58b9b20 100644
--- a/src/bot.rs
+++ b/src/bot.rs
@@ -8,7 +8,7 @@ use crate::matrix;
 use crate::state::DiceBotState;
 use dirs;
 use futures::stream::{self, StreamExt};
-use log::info;
+use log::{error, info};
 use matrix_sdk::{self, identifiers::EventId, room::Joined, Client, ClientConfig, SyncSettings};
 use std::clone::Clone;
 use std::path::PathBuf;
@@ -62,6 +62,13 @@ async fn handle_single_result(
     room: &Joined,
     event_id: EventId,
 ) {
+    if cmd_result.is_err() {
+        error!(
+            "Command execution error: {}",
+            cmd_result.as_ref().err().unwrap()
+        );
+    }
+
     let html = cmd_result.message_html(respond_to);
     matrix::send_message(client, room.room_id(), &html, Some(event_id)).await;
 }
@@ -87,6 +94,10 @@ async fn handle_multiple_results(
         })
         .collect();
 
+    for result in errors.iter() {
+        error!("Command execution error: '{}' - {}", result.0, result.1);
+    }
+
     let message = if errors.len() == 0 {
         format!("{}: Executed {} commands", respond_to, results.len())
     } else {
diff --git a/src/logic.rs b/src/logic.rs
index 5be59a6..7b67ce0 100644
--- a/src/logic.rs
+++ b/src/logic.rs
@@ -33,8 +33,6 @@ pub async fn record_room_information(
         .into_iter()
         .filter(|username| username != our_username);
 
-    println!("Users to add to room: {:?}", filtered_usernames);
-
     // Async collect into vec of results, then use into_iter of result
     // to go to from Result<Vec<()>> to just Result<()>. Easier than
     // attempting to async-collect our way to a single Result<()>.
diff --git a/src/matrix.rs b/src/matrix.rs
index 7ff73c4..6c8e7d8 100644
--- a/src/matrix.rs
+++ b/src/matrix.rs
@@ -53,7 +53,7 @@ pub async fn send_message(
     ));
 
     content.relates_to = reply_to.map(|event_id| Relation::Reply {
-        in_reply_to: InReplyTo { event_id },
+        in_reply_to: InReplyTo::new(event_id),
     });
 
     let content = AnyMessageEventContent::RoomMessage(content);
diff --git a/src/migrator/migrations/V1__variables.rs b/src/migrator/migrations/V1__variables.rs
index ec8f063..a494bc7 100644
--- a/src/migrator/migrations/V1__variables.rs
+++ b/src/migrator/migrations/V1__variables.rs
@@ -1,10 +1,8 @@
 use barrel::backend::Sqlite;
 use barrel::{types, Migration};
-use log::info;
 
 pub fn migration() -> String {
     let mut m = Migration::new();
-    info!("Applying migration: {}", file!());
 
     m.create_table("user_variables", |t| {
         t.add_column("room_id", types::text());
diff --git a/src/migrator/migrations/V2__rooms.rs b/src/migrator/migrations/V2__room_info.rs
similarity index 55%
rename from src/migrator/migrations/V2__rooms.rs
rename to src/migrator/migrations/V2__room_info.rs
index 5568a01..fb6ebb2 100644
--- a/src/migrator/migrations/V2__rooms.rs
+++ b/src/migrator/migrations/V2__room_info.rs
@@ -1,21 +1,12 @@
 use barrel::backend::Sqlite;
 use barrel::{types, types::Type, Migration};
-use log::info;
 
 fn primary_uuid() -> Type {
     types::text().unique(true).primary(true).nullable(false)
 }
 
-fn autoincrement_int() -> Type {
-    types::integer()
-        .increments(true)
-        .unique(true)
-        .primary(false)
-}
-
 pub fn migration() -> String {
     let mut m = Migration::new();
-    info!("Applying migration: {}", file!());
 
     //Table for basic room information: room ID, room name
     m.create_table("room_info", move |t| {
@@ -23,11 +14,5 @@ pub fn migration() -> String {
         t.add_column("room_name", types::text());
     });
 
-    //Table of users in rooms.
-    m.create_table("room_users", move |t| {
-        t.add_column("room_id", autoincrement_int());
-        t.add_column("username", types::text());
-    });
-
     m.make::<Sqlite>()
 }
diff --git a/src/migrator/migrations/V3__dbstate.rs b/src/migrator/migrations/V3__dbstate.rs
index 0ae82c2..3bb25c0 100644
--- a/src/migrator/migrations/V3__dbstate.rs
+++ b/src/migrator/migrations/V3__dbstate.rs
@@ -1,10 +1,8 @@
 use barrel::backend::Sqlite;
 use barrel::{types, Migration};
-use log::info;
 
 pub fn migration() -> String {
     let mut m = Migration::new();
-    info!("Applying migration: {}", file!());
 
     //Basic state table with only device ID for now. Uses only one row.
     m.create_table("bot_state", move |t| {
diff --git a/src/migrator/migrations/V4__room_events.rs b/src/migrator/migrations/V4__room_events.rs
index d9d487b..8657a98 100644
--- a/src/migrator/migrations/V4__room_events.rs
+++ b/src/migrator/migrations/V4__room_events.rs
@@ -1,21 +1,7 @@
 use barrel::backend::Sqlite;
 use barrel::{types, types::Type, Migration};
-use log::info;
-
-fn primary_uuid() -> Type {
-    types::text().unique(true).nullable(false)
-}
-
-fn autoincrement_int() -> Type {
-    types::integer()
-        .increments(true)
-        .unique(true)
-        .primary(false)
-}
-
 pub fn migration() -> String {
     let mut m = Migration::new();
-    info!("Applying migration: {}", file!());
 
     //Table of room ID, event ID, event timestamp
     m.create_table("room_events", move |t| {
@@ -32,7 +18,5 @@ pub fn migration() -> String {
         res.pop();
     }
 
-    let x = format!("{}, PRIMARY KEY (room_id, event_id));", res);
-    println!("{}", x);
-    x
+    format!("{}, PRIMARY KEY (room_id, event_id));", res)
 }
diff --git a/src/migrator/migrations/V5__room_users.rs b/src/migrator/migrations/V5__room_users.rs
new file mode 100644
index 0000000..eedec4d
--- /dev/null
+++ b/src/migrator/migrations/V5__room_users.rs
@@ -0,0 +1,22 @@
+use barrel::backend::Sqlite;
+use barrel::{types, types::Type, Migration};
+
+pub fn migration() -> String {
+    let mut m = Migration::new();
+
+    //Table of users in rooms.
+    m.create_table("room_users", move |t| {
+        t.add_column("room_id", types::text());
+        t.add_column("username", types::text());
+    });
+
+    let mut res = m.make::<Sqlite>();
+
+    //This is a hack that gives us a composite primary key.
+    if res.ends_with(");") {
+        res.pop();
+        res.pop();
+    }
+
+    format!("{}, PRIMARY KEY (room_id, username));", res)
+}