diff --git a/index.html b/index.html
index 6a43da1..daa30e0 100644
--- a/index.html
+++ b/index.html
@@ -34,13 +34,28 @@
       cols="80"
       placeholder="// Rust code goes here..."
     >
-fn main() {}</textarea
+struct Struct&lt;T&gt;(T);
+
+impl&lt;T&gt; Struct&lt;T&gt; {
+  const CONST: fn() = || {
+      struct _Obligation where T:;
+  };
+}
+</textarea
     >
     <br />
     <label for="start">Start</label>
     <input id="start" value="2022-01-01" />
     <label for="end">End (optional)</label>
-    <input id="end" />
+    <input id="end" value="2022-06-01" />
+    <label for="kind">Regression Kind</label>
+    <select id="kind">
+      <option>error</option>
+      <option>success</option>
+      <option selected="selected">ice</option>
+      <option>non-ice</option>
+      <option>non-error</option>
+    </select>
     <br />
     <br />
     <button class="bisect-btn" onclick="bisect()">Bisect!</button>
@@ -64,6 +79,7 @@ fn main() {}</textarea
       const result = document.getElementById("result");
       const start = document.getElementById("start");
       const end = document.getElementById("end");
+      const kind = document.getElementById("kind");
 
       let bisecting = false;
 
@@ -84,14 +100,24 @@ fn main() {}</textarea
         status.innerText = "Sending request...";
 
         const params = new URLSearchParams();
+
         params.append("start", start.value.trim());
+        params.append("kind", kind.value);
+
         if (end.value.trim()) {
           params.append("end", end.value.trim());
         }
 
+        const body = code.value;
+
+        console.log("Bisecting", body);
+
         const fetched = await fetch(`${BASE_URL}bisect?${params}`, {
           method: "POST",
-          body: code.value,
+          body,
+          headers: {
+            "Content-Type": "application/text",
+          },
         });
         const { job_id } = await fetched.json();
 
diff --git a/src/bisect.rs b/src/bisect.rs
index d44a4e8..1a76c54 100644
--- a/src/bisect.rs
+++ b/src/bisect.rs
@@ -5,7 +5,7 @@ use color_eyre::eyre::{Context, ContextCompat};
 use color_eyre::Result;
 use rusqlite::Connection;
 use serde::Serialize;
-use tracing::{error, info};
+use tracing::{error, info, trace};
 use uuid::Uuid;
 
 use crate::{db, Options};
@@ -67,41 +67,48 @@ pub fn bisect_worker(jobs: mpsc::Receiver<Job>, conn: Connection) {
             Err(_) => return,
         };
 
-        info!(id = %job.id, "Starting bisection job");
-
-        let mut bisect = Bisection {
-            id: job.id,
-            code: job.code.clone(),
-            status: BisectStatus::InProgress,
-        };
-
-        match db::add_bisection(&conn, &bisect).wrap_err("insert bisection") {
-            Ok(()) => {
-                let status = match bisect_job(job) {
-                    Ok(status) => status,
-                    Err(err) => {
-                        error!(?err, "error processing bisection");
-                        BisectStatus::Error {
-                            output: err.to_string(),
-                        }
-                    }
-                };
-
-                bisect.status = status;
-
-                match db::update_bisection_status(&conn, &bisect) {
-                    Ok(()) => {}
-                    Err(err) => error!(?err, "error updating bisection"),
-                }
+        match process_job(job, &conn) {
+            Ok(()) => {}
+            Err(err) => {
+                error!(?err, "error processing bisection")
             }
-            Err(err) => error!(?err, "error inserting bisection"),
         }
     }
 }
 
-#[tracing::instrument(skip(job), fields(id = %job.id))]
+#[tracing::instrument(skip(job, conn), fields(id = %job.id))]
+pub fn process_job(job: Job, conn: &Connection) -> Result<()> {
+    info!(id = %job.id, "Starting bisection job");
+
+    let mut bisect = Bisection {
+        id: job.id,
+        code: job.code.clone(),
+        status: BisectStatus::InProgress,
+    };
+
+    db::add_bisection(&conn, &bisect).wrap_err("insert bisection")?;
+
+    let status = match bisect_job(job) {
+        Ok(status) => status,
+        Err(err) => {
+            error!(?err, "error processing bisection");
+            BisectStatus::Error {
+                output: format!("Internal error"),
+            }
+        }
+    };
+
+    bisect.status = status;
+
+    db::update_bisection_status(&conn, &bisect).wrap_err("writing bisection result")?;
+
+    trace!(?bisect, "Finished bisection job");
+
+    Ok(())
+}
+
 fn bisect_job(job: Job) -> Result<BisectStatus> {
-    let (output, state) = run_bisect_for_file(job.code, job.options.start, job.options.end)?;
+    let (output, state) = run_bisect_for_file(job.code, &job.options)?;
     info!(state = %state.status(), "Bisection finished");
 
     process_result(output, state).wrap_err("process result")
@@ -113,7 +120,9 @@ fn process_result(output: Output, state: JobState) -> Result<BisectStatus> {
 
     match state {
         JobState::Failed => {
-            let output = stderr.lines().rev().take(10).collect::<String>();
+            let mut output = stderr.lines().rev().take(30).collect::<Vec<_>>();
+            output.reverse();
+            let output = output.join("\n");
             info!(?output, "output");
             Ok(BisectStatus::Error { output })
         }
@@ -127,11 +136,7 @@ fn process_result(output: Output, state: JobState) -> Result<BisectStatus> {
     }
 }
 
-fn run_bisect_for_file(
-    input: String,
-    start: chrono::NaiveDate,
-    end: Option<chrono::NaiveDate>,
-) -> Result<(Output, JobState)> {
+fn run_bisect_for_file(input: String, options: &Options) -> Result<(Output, JobState)> {
     let temp_dir = tempdir::TempDir::new("bisect").wrap_err("creating tempdir")?;
     let mut cargo_new = Command::new("cargo");
     cargo_new
@@ -156,12 +161,18 @@ fn run_bisect_for_file(
     bisect.arg("--timeout").arg("30"); // don't hang
     bisect.current_dir(&cargo_dir);
 
-    bisect.arg("--start").arg(start.to_string());
+    bisect.arg("--start").arg(options.start.to_string());
 
-    if let Some(end) = end {
+    if let Some(end) = options.end {
         bisect.arg("--end").arg(end.to_string());
     }
 
+    bisect
+        .arg("--regress")
+        .arg(options.kind.as_deref().unwrap_or("ice")); // FIXME Make this configurable
+
+    bisect.env("RUST_LOG", "error"); // overwrite RUST_LOG
+
     let output = bisect.output().wrap_err("spawning cargo-bisect-rustc")?;
 
     if output.status.success() {
diff --git a/src/main.rs b/src/main.rs
index 90d90de..9e2b075 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -97,6 +97,7 @@ async fn get_bisections(Extension(conn): Extension<Conn>) -> impl IntoResponse {
 pub struct Options {
     start: chrono::NaiveDate,
     end: Option<chrono::NaiveDate>,
+    kind: Option<String>,
 }
 
 #[derive(Debug, Serialize)]