make it blazingly fast with caching of css and js

Cargo.lock

@@ -238,6 +238,15 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bs58"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf88ba1141d185c399bee5288d850d63b8369520c1eafc32a0430b5b6c287bf4"
+dependencies = [
+ "tinyvec",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.19.0"
@@ -448,13 +457,16 @@ version = "0.1.0"
 dependencies = [
  "askama",
  "axum",
+ "bs58",
  "color-eyre",
  "futures",
  "jiff",
  "jsonwebtoken",
  "octocrab",
  "reqwest",
+ "rootcause",
  "serde",
+ "sha2",
  "sqlx",
  "tempfile",
  "tokio",
@@ -545,7 +557,7 @@ checksum = "da0e4dd2a88388a1f4ccc7c9ce104604dab68d9f408dc34cd45823d5a9069095"
 dependencies = [
  "futures-core",
  "futures-sink",
- "spin",
+ "spin 0.9.8",
 ]
 
 [[package]]
@@ -1157,7 +1169,7 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 dependencies = [
- "spin",
+ "spin 0.9.8",
 ]
 
 [[package]]
@@ -1791,6 +1803,30 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rootcause"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12e6b4d9966d17c1e58cd682656e9e1551f19f421b07d7618723009445f06099"
+dependencies = [
+ "hashbrown 0.16.0",
+ "indexmap",
+ "rootcause-internals",
+ "rustc-hash",
+ "spin 0.10.0",
+ "triomphe",
+ "unsize",
+]
+
+[[package]]
+name = "rootcause-internals"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac64da7400123d25e3603dfd91a0ce7a78a3ad6e2d9400e6cdbb1aef0574c0d7"
+dependencies = [
+ "triomphe",
+]
+
 [[package]]
 name = "rsa"
 version = "0.9.8"
@@ -2132,6 +2168,12 @@ dependencies = [
  "lock_api",
 ]
 
+[[package]]
+name = "spin"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
+
 [[package]]
 name = "spki"
 version = "0.7.3"
@@ -2664,6 +2706,15 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "triomphe"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd69c5aa8f924c7519d6372789a74eac5b94fb0f8fcf0d4a97eb0bfc3e785f39"
+dependencies = [
+ "unsize",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.5"
@@ -2703,6 +2754,15 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7df058c713841ad818f1dc5d3fd88063241cc61f49f5fbea4b951e8cf5a8d71d"
 
+[[package]]
+name = "unsize"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fa7a7a734c1a5664a662ddcea0b6c9472a21da8888c957c7f1eaa09dba7a939"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"

Cargo.toml

@@ -14,7 +14,6 @@ axum = { version = "0.8.6", default-features = false, features = [
     "tracing",
     "macros",
 ] }
-color-eyre = "0.6.3"
 futures = "0.3.30"
 jiff = "0.2.16"
 jsonwebtoken = { version = "9.3.1" }
@@ -23,6 +22,7 @@ reqwest = { version = "0.12.7", features = [
     "rustls-tls",
     "http2",
 ], default-features = false }
+rootcause = "0.10.0"
 serde = { version = "1.0.210", features = ["derive"] }
 sqlx = { version = "0.8.2", features = ["runtime-tokio", "sqlite"] }
 tempfile = "3.12.0"
@@ -31,4 +31,6 @@ tracing = { version = "0.1.40", features = ["attributes"] }
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
 
 [build-dependencies]
+bs58 = "0.5.1"
 color-eyre = "0.6.3"
+sha2 = "0.10.9"

build.rs

@@ -1,6 +1,29 @@
+use std::path::PathBuf;
+
+use sha2::Digest;
+
 fn main() {
     // Always rerun.
 
+    let index_css = include_str!("static/index.css");
+    let index_js = include_str!("static/index.js");
+
+    let index_css_name = get_file_ref("css", index_css);
+    let index_js_name = get_file_ref("js", index_js);
+
+    let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());
+
+    std::fs::write(
+        out_dir.join("revs.rs"),
+        format!(
+            r#"
+pub const INDEX_CSS_NAME: &str = "{index_css_name}";
+pub const INDEX_JS_NAME: &str = "{index_js_name}";
+    "#
+        ),
+    )
+    .unwrap();
+
     let version = if let Ok(commit) = try_get_commit() {
         match has_no_changes() {
             Ok(true) => commit,
@@ -20,6 +43,15 @@ fn main() {
     println!("cargo:rustc-env=GIT_COMMIT_SHORT={version_short}");
 }
 
+fn get_file_ref(ext: &str, content: &str) -> String {
+    let mut hash = sha2::Sha256::new();
+    hash.update(content);
+    let digest = hash.finalize();
+    let rev = bs58::encode(digest).into_string();
+    let rev = &rev[..16];
+    format!("/{rev}.{ext}")
+}
+
 fn try_get_commit() -> color_eyre::Result<String> {
     if let Ok(overridden) = std::env::var("DOES_IT_BUILD_OVERRIDE_VERSION") {
         return Ok(overridden);

src/build.rs

@@ -6,11 +6,8 @@ use std::{
     time::{Duration, Instant, SystemTime},
 };
 
-use color_eyre::{
-    eyre::{bail, Context},
-    Result,
-};
 use futures::StreamExt;
+use rootcause::{prelude::ResultExt, report};
 use tokio::process::Command;
 use tracing::{debug, error, info};
 
@@ -18,6 +15,7 @@ use crate::{
     db::{BuildMode, Db, FullBuildInfo, Status},
     nightlies::Nightlies,
     notification::GitHubClient,
+    Result,
 };
 
 struct CustomBuildFlags {
@@ -73,11 +71,11 @@ pub async fn background_builder(db: Db, github_client: GitHubClient) -> Result<(
 }
 
 async fn background_builder_inner(db: &Db, github_client: &GitHubClient) -> Result<()> {
-    let nightlies = Nightlies::fetch().await.wrap_err("fetching nightlies")?;
+    let nightlies = Nightlies::fetch().await.context("fetching nightlies")?;
     let already_finished = db
         .finished_nightlies()
         .await
-        .wrap_err("fetching finished nightlies")?;
+        .context("fetching finished nightlies")?;
 
     let next = nightlies.select_latest_to_build(&already_finished);
     match next {
@@ -85,12 +83,12 @@ async fn background_builder_inner(db: &Db, github_client: &GitHubClient) -> Resu
             info!(%nightly, %mode, "Building next nightly");
             let result = build_every_target_for_toolchain(db, &nightly, mode, github_client)
                 .await
-                .wrap_err_with(|| format!("building targets for toolchain {nightly}"));
+                .context_with(|| format!("building targets for toolchain {nightly}"));
             if let Err(err) = result {
                 error!(%nightly, %mode, ?err, "Failed to build nightly");
                 db.finish_nightly_as_broken(&nightly, mode, &format!("{err:?}"))
                     .await
-                    .wrap_err("marking nightly as broken")?;
+                    .context("marking nightly as broken")?;
             }
         }
         None => {
@@ -108,16 +106,16 @@ async fn targets_for_toolchain(toolchain: &Toolchain) -> Result<Vec<String>> {
         .arg("target-list")
         .output()
         .await
-        .wrap_err("failed to spawn rustc")?;
+        .context("failed to spawn rustc")?;
     if !output.status.success() {
-        bail!(
+        return Err(report!(
             "failed to get target-list from rustc: {:?}",
             String::from_utf8(output.stderr)
-        );
+        ));
     }
 
     Ok(String::from_utf8(output.stdout)
-        .wrap_err("rustc target-list is invalid UTF-8")?
+        .context("rustc target-list is invalid UTF-8")?
         .split_whitespace()
         .map(ToOwned::to_owned)
         .collect())
@@ -135,9 +133,12 @@ async fn install_toolchain(toolchain: &Toolchain, mode: BuildMode) -> Result<()>
         .arg("minimal")
         .output()
         .await
-        .wrap_err("failed to spawn rustup")?;
+        .context("failed to spawn rustup")?;
     if !result.status.success() {
-        bail!("rustup failed: {:?}", String::from_utf8(result.stderr));
+        return Err(report!(
+            "rustup failed: {:?}",
+            String::from_utf8(result.stderr)
+        ));
     }
     let result = Command::new("rustup")
         .arg("component")
@@ -147,9 +148,12 @@ async fn install_toolchain(toolchain: &Toolchain, mode: BuildMode) -> Result<()>
         .arg(&toolchain.0)
         .output()
         .await
-        .wrap_err("failed to spawn rustup")?;
+        .context("failed to spawn rustup")?;
     if !result.status.success() {
-        bail!("rustup failed: {:?}", String::from_utf8(result.stderr));
+        return Err(report!(
+            "rustup failed: {:?}",
+            String::from_utf8(result.stderr)
+        ));
     }
 
     Ok(())
@@ -165,12 +169,12 @@ async fn uninstall_toolchain(toolchain: &Toolchain) -> Result<()> {
         .arg(&toolchain.0)
         .output()
         .await
-        .wrap_err("failed to spawn rustup")?;
+        .context("failed to spawn rustup")?;
     if !result.status.success() {
-        bail!(
+        return Err(report!(
             "rustup toolchain remove failed: {:?}",
             String::from_utf8(result.stderr)
-        );
+        ));
     }
     Ok(())
 }
@@ -191,7 +195,7 @@ pub async fn build_every_target_for_toolchain(
 
     let targets = targets_for_toolchain(&toolchain)
         .await
-        .wrap_err("failed to get targets")?;
+        .context("failed to get targets")?;
 
     let results = futures::stream::iter(
         targets
@@ -208,7 +212,7 @@ pub async fn build_every_target_for_toolchain(
     for target in targets {
         build_single_target(db, nightly, &target, mode, github_client)
             .await
-            .wrap_err_with(|| format!("building target {target} for toolchain {toolchain}"))?;
+            .context_with(|| format!("building target {target} for toolchain {toolchain}"))?;
     }
 
     // Mark it as finished, so we never have to build it again.
@@ -230,7 +234,7 @@ async fn build_single_target(
     let existing = db
         .build_status_full(nightly, target, mode)
         .await
-        .wrap_err("getting existing build")?;
+        .context("getting existing build")?;
     if existing.is_some() {
         debug!("Build already exists");
         return Ok(());
@@ -238,13 +242,13 @@ async fn build_single_target(
 
     info!("Building target");
 
-    let tmpdir = tempfile::tempdir().wrap_err("creating temporary directory")?;
+    let tmpdir = tempfile::tempdir().context("creating temporary directory")?;
 
     let start_time = Instant::now();
 
     let result = build_target(tmpdir.path(), &Toolchain::from_nightly(nightly), target)
         .await
-        .wrap_err("running build")?;
+        .context("running build")?;
 
     let full_build_info = FullBuildInfo {
         nightly: nightly.into(),
@@ -298,14 +302,14 @@ async fn build_target(tmpdir: &Path, toolchain: &Toolchain, target: &str) -> Res
         .current_dir(tmpdir)
         .output()
         .await
-        .wrap_err("spawning cargo init")?;
+        .context("spawning cargo init")?;
     if !init.status.success() {
-        bail!("init failed: {}", String::from_utf8(init.stderr)?);
+        return Err(report!("init failed: {}", String::from_utf8(init.stderr)?));
     }
 
     let librs = tmpdir.join("src").join("lib.rs");
     std::fs::write(&librs, "#![no_std]\n")
-        .wrap_err_with(|| format!("writing to {}", librs.display()))?;
+        .context_with(|| format!("writing to {}", librs.display()))?;
 
     async fn run(
         toolchain: &Toolchain,
@@ -330,14 +334,16 @@ async fn build_target(tmpdir: &Path, toolchain: &Toolchain, target: &str) -> Res
             *rustflags = Some(flags);
         }
 
-        cmd.current_dir(tmpdir)
+        let output = cmd
+            .current_dir(tmpdir)
             .output()
             .await
-            .wrap_err("spawning cargo build")
+            .context("spawning cargo build")?;
+        Ok(output)
     }
 
     let mut output = run(toolchain, target, &mut rustflags, tmpdir, "-Zbuild-std").await?;
-    let mut stderr = String::from_utf8(output.stderr).wrap_err("cargo stderr utf8")?;
+    let mut stderr = String::from_utf8(output.stderr).context("cargo stderr utf8")?;
 
     let status = if output.status.success() {
         Status::Pass
@@ -352,7 +358,7 @@ async fn build_target(tmpdir: &Path, toolchain: &Toolchain, target: &str) -> Res
             "-Zbuild-std=core",
         )
         .await?;
-        stderr = String::from_utf8(output.stderr).wrap_err("cargo stderr utf8")?;
+        stderr = String::from_utf8(output.stderr).context("cargo stderr utf8")?;
 
         if output.status.success() {
             Status::Pass

src/db.rs

@@ -1,12 +1,11 @@
 use std::{fmt::Display, str::FromStr};
 
-use color_eyre::{
-    eyre::{bail, Context},
-    Result,
-};
+use rootcause::{prelude::ResultExt, report};
 use serde::{Deserialize, Serialize};
 use sqlx::{migrate::Migrator, sqlite::SqliteConnectOptions, Pool, Sqlite};
 
+use crate::Result;
+
 #[derive(Clone)]
 pub struct Db {
     pub conn: Pool<Sqlite>,
@@ -112,12 +111,13 @@ pub struct NotificationIssue {
 impl Db {
     pub async fn open(path: &str) -> Result<Self> {
         let db_opts = SqliteConnectOptions::from_str(path)
-            .wrap_err("parsing database URL")?
+            .context("parsing database URL")
+            .attach(format!("url: {path}"))?
             .create_if_missing(true);
 
         let conn = Pool::connect_with(db_opts)
             .await
-            .wrap_err_with(|| format!("opening db from `{path}`"))?;
+            .context_with(|| format!("opening db from `{path}`"))?;
         Ok(Self { conn })
     }
 
@@ -137,38 +137,44 @@ impl Db {
         .bind(info.build_duration_ms)
         .execute(&self.conn)
         .await
-        .wrap_err("inserting build info into database")?;
+        .context("inserting build info into database")?;
         Ok(())
     }
 
     pub async fn history_for_target(&self, target: &str) -> Result<Vec<BuildInfo>> {
-        sqlx::query_as::<_, BuildInfo>(
+        let history = sqlx::query_as::<_, BuildInfo>(
             "SELECT nightly, target, status, mode FROM build_info WHERE target = ?",
         )
         .bind(target)
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting history for single target")
+        .context("getting history for single target")
+        .attach(format!("target: {target}"))?;
+        Ok(history)
     }
 
     pub async fn history_for_nightly(&self, nightly: &str) -> Result<Vec<BuildInfo>> {
-        sqlx::query_as::<_, BuildInfo>(
+        let history = sqlx::query_as::<_, BuildInfo>(
             "SELECT nightly, target, status, mode FROM build_info WHERE nightly = ?",
         )
         .bind(nightly)
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting history for single nightly")
+        .context("getting history for single nightly")
+        .attach(format!("nightly: {nightly}"))?;
+        Ok(history)
     }
 
     pub async fn nightly_info(&self, nightly: &str) -> Result<Vec<FinishedNightlyWithBroken>> {
-        sqlx::query_as::<_, FinishedNightlyWithBroken>(
+        let info = sqlx::query_as::<_, FinishedNightlyWithBroken>(
             "SELECT nightly, mode, is_broken, broken_error FROM finished_nightly WHERE nightly = ?",
         )
         .bind(nightly)
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting finished_nightly for single nightly")
+        .context("getting finished_nightly for single nightly")
+        .attach(format!("nightly: {nightly}"))?;
+        Ok(info)
     }
 
     pub async fn target_list(&self) -> Result<Vec<String>> {
@@ -177,11 +183,14 @@ impl Db {
             target: String,
         }
 
-        sqlx::query_as::<_, TargetName>("SELECT DISTINCT target FROM build_info ORDER BY target")
-            .fetch_all(&self.conn)
-            .await
-            .wrap_err("getting list of all targets")
-            .map(|elems| elems.into_iter().map(|elem| elem.target).collect())
+        let list = sqlx::query_as::<_, TargetName>(
+            "SELECT DISTINCT target FROM build_info ORDER BY target",
+        )
+        .fetch_all(&self.conn)
+        .await
+        .context("getting list of all targets")?;
+
+        Ok(list.into_iter().map(|elem| elem.target).collect())
     }
 
     pub async fn nightly_list(&self) -> Result<Vec<String>> {
@@ -190,13 +199,14 @@ impl Db {
             nightly: String,
         }
 
-        sqlx::query_as::<_, NightlyName>(
+        let list = sqlx::query_as::<_, NightlyName>(
             "SELECT DISTINCT nightly FROM build_info ORDER BY nightly DESC",
         )
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting list of all targets")
-        .map(|elems| elems.into_iter().map(|elem| elem.nightly).collect())
+        .context("getting list of all nightlies")?;
+
+        Ok(list.into_iter().map(|elem| elem.nightly).collect())
     }
 
     pub async fn build_count(&self) -> Result<BuildStats> {
@@ -211,7 +221,7 @@ impl Db {
         )
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting list of all targets")?;
+        .context("getting total count of builds")?;
 
         let count = |status| {
             results
@@ -242,7 +252,8 @@ impl Db {
         .bind(mode)
         .fetch_all(&self.conn)
         .await
-        .wrap_err("getting build status from DB")?;
+        .context("getting build status from DB")
+        .attach(format!("nightly: {nightly}, target: {target}"))?;
         Ok(result.first().cloned())
     }
 
@@ -251,7 +262,7 @@ impl Db {
             sqlx::query_as::<_, FinishedNightly>("SELECT nightly, mode from finished_nightly")
                 .fetch_all(&self.conn)
                 .await
-                .wrap_err("fetching finished nightlies")?;
+                .context("getting finished nightlies")?;
 
         Ok(result)
     }
@@ -264,10 +275,10 @@ impl Db {
         .bind(mode)
         .fetch_all(&self.conn)
         .await
-        .wrap_err("checking whether a nightly is finished")?;
+        .context("checking whether a nightly is finished")?;
 
         if result.len() > 1 {
-            bail!("found more than one result for {nightly} {mode}");
+            return Err(report!("found more than one result for {nightly} {mode}"));
         }
 
         Ok(result.len() == 1)
@@ -279,7 +290,7 @@ impl Db {
             .bind(mode)
             .execute(&self.conn)
             .await
-            .wrap_err("inserting finished nightly")?;
+            .context("inserting finished nightly")?;
         Ok(())
     }
 
@@ -295,7 +306,7 @@ impl Db {
             .bind(error)
             .execute(&self.conn)
             .await
-            .wrap_err("inserting finished broken nightly")?;
+            .context("inserting finished broken nightly")?;
         Ok(())
     }
 
@@ -303,13 +314,14 @@ impl Db {
         &self,
         target: &str,
     ) -> Result<Option<NotificationIssue>> {
-        sqlx::query_as::<_, NotificationIssue>(
+        let notification = sqlx::query_as::<_, NotificationIssue>(
             "SELECT * FROM notification_issues WHERE status = 'open' AND target = ?",
         )
         .bind(target)
         .fetch_optional(&self.conn)
         .await
-        .wrap_err("finding existing notification")
+        .context("finding existing notification")?;
+        Ok(notification)
     }
 
     pub async fn insert_notification(&self, notification: NotificationIssue) -> Result<()> {
@@ -325,7 +337,7 @@ impl Db {
         .bind(notification.last_update_date)
         .execute(&self.conn)
         .await
-        .wrap_err("inserting new notification")?;
+        .context("inserting new notification")?;
         Ok(())
     }
 
@@ -335,7 +347,7 @@ impl Db {
             .bind(issue_number)
             .execute(&self.conn)
             .await
-            .wrap_err("marking notification as closed")?;
+            .context("marking notification as closed")?;
         Ok(())
     }
 
@@ -349,7 +361,7 @@ impl Db {
             .bind(issue_number)
             .execute(&self.conn)
             .await
-            .wrap_err("marking notification as closed")?;
+            .context("marking notification as closed")?;
         Ok(())
     }
 }

src/main.rs

@@ -4,13 +4,15 @@ mod nightlies;
 mod notification;
 mod web;
 
-use color_eyre::{eyre::WrapErr, Result};
 use db::Db;
+use rootcause::{prelude::ResultExt, Report};
 use tracing_subscriber::EnvFilter;
 
 const VERSION: &str = env!("GIT_COMMIT");
 const VERSION_SHORT: &str = env!("GIT_COMMIT_SHORT");
 
+type Result<T, E = Report> = std::result::Result<T, E>;
+
 #[tokio::main]
 async fn main() -> Result<()> {
     main_inner().await
@@ -25,25 +27,25 @@ async fn main_inner() -> Result<()> {
     db::MIGRATOR
         .run(&db.conn)
         .await
-        .wrap_err("running migrations")?;
+        .context("running migrations")?;
 
     let send_pings = std::env::var("GITHUB_SEND_PINGS")
         .map(|_| true)
         .unwrap_or(false);
-    let github_owner = std::env::var("GITHUB_OWNER").wrap_err("missing GITHUB_OWNER env var")?;
-    let github_repo = std::env::var("GITHUB_REPO").wrap_err("missing GITHUB_REPO env var")?;
+    let github_owner = std::env::var("GITHUB_OWNER").context("missing GITHUB_OWNER env var")?;
+    let github_repo = std::env::var("GITHUB_REPO").context("missing GITHUB_REPO env var")?;
     let app_id = std::env::var("GITHUB_APP_ID")
-        .wrap_err("missing GITHUB_APP_ID env var")?
+        .context("missing GITHUB_APP_ID env var")?
         .parse::<u64>()
-        .wrap_err("invalid GITHUB_APP_ID")?;
+        .context("invalid GITHUB_APP_ID")?;
     let key = std::env::var("GITHUB_APP_PRIVATE_KEY")
-        .wrap_err("missing GITHUB_APP_PRIVATE_KEY env var")?;
+        .context("missing GITHUB_APP_PRIVATE_KEY env var")?;
     let key = jsonwebtoken::EncodingKey::from_rsa_pem(key.as_bytes()).unwrap();
 
     let github_client = octocrab::Octocrab::builder()
         .app(app_id.into(), key)
         .build()
-        .wrap_err("failed to create client")?;
+        .context("failed to create client")?;
 
     let github_client = notification::GitHubClient::new(
         send_pings,

src/nightlies.rs

@@ -1,11 +1,11 @@
 use std::collections::HashSet;
 use std::hash::RandomState;
 
-use color_eyre::eyre::Context;
-use color_eyre::Result;
+use rootcause::prelude::ResultExt;
 use tracing::debug;
 
 use crate::db::{BuildMode, FinishedNightly};
+use crate::Result;
 
 const EARLIEST_CUTOFF_DATE: &str = "2023-01-01";
 
@@ -15,13 +15,21 @@ pub struct Nightlies {
 }
 
 impl Nightlies {
-    pub async fn fetch() -> Result<Nightlies> {
-        let manifests = reqwest::get("https://static.rust-lang.org/manifests.txt")
+    async fn get_body(url: &str) -> Result<String, rootcause::Report> {
+        Ok(reqwest::get(url)
             .await
-            .wrap_err("fetching https://static.rust-lang.org/manifests.txt")?
+            .context("executing GET request")?
             .text()
             .await
-            .wrap_err("fetching body of https://static.rust-lang.org/manifests.txt")?;
+            .context("fetching body")?)
+    }
+
+    pub async fn fetch() -> Result<Nightlies> {
+        let url = "https://static.rust-lang.org/manifests.txt";
+        let manifests = Nightlies::get_body(url)
+            .await
+            .context(format!("Fetching manifests.txt"))
+            .attach(format!("url: {url}"))?;
         let mut all = nightlies_from_manifest(&manifests)
             .into_iter()
             .filter(|date| date.as_str() > EARLIEST_CUTOFF_DATE)

src/notification.rs

@@ -1,9 +1,10 @@
-use color_eyre::eyre::{Context, Result};
 use octocrab::models::issues::IssueStateReason;
 use octocrab::models::IssueState;
+use rootcause::prelude::ResultExt;
 use tracing::info;
 
 use crate::db::{Db, FullBuildInfo, NotificationIssue, NotificationStatus, Status};
+use crate::Result;
 
 pub const TABLE_FILE: &str = file!();
 pub const TABLE_LINE: u32 = line!() + 1;
@@ -55,11 +56,11 @@ impl GitHubClient {
             .apps()
             .get_repository_installation(&owner, &repo)
             .await
-            .wrap_err_with(|| format!("getting installation for {owner}/{repo}"))?;
+            .context_with(|| format!("getting installation for {owner}/{repo}"))?;
 
         let client = client
             .installation(installation.id)
-            .wrap_err("getting client for installation")?;
+            .context("getting client for installation")?;
 
         Ok(Self {
             send_pings,
@@ -143,11 +144,11 @@ This update is sent after a month of inactivity.
                     ),
                 )
                 .await
-                .wrap_err("creating update comment")?;
+                .context("creating update comment")?;
 
             db.set_notification_last_update(issue.issue_number, jiff::Timestamp::now())
                 .await
-                .wrap_err("updating last_update_date in DB")?;
+                .context("updating last_update_date in DB")?;
         } else {
             info!("Not sending update for {target}, since not enough time has elapsed since the last one");
         }
@@ -166,9 +167,13 @@ This update is sent after a month of inactivity.
                 .issues()
                 .create_label(target, "d73a4a", format!("Target: {target}"))
                 .await
-                .wrap_err("creating label")?;
+                .context("creating label")?;
+        }
+        Err(err) => {
+            return Err(err)
+                .context("failed to fetch label label")
+                .map_err(Into::into)
         }
-        Err(err) => return Err(err).wrap_err("failed to fetch label label"),
     }
 
     let pings = notify_usernames
@@ -207,7 +212,7 @@ This issue will be closed automatically when this target works again!"
         ))
         .send()
         .await
-        .wrap_err("failed to create issue")?;
+        .context("failed to create issue")?;
 
     db.insert_notification(NotificationIssue {
         first_failed_nightly: nightly.into(),
@@ -217,7 +222,7 @@ This issue will be closed automatically when this target works again!"
         last_update_date: Some(jiff::Timestamp::now().as_millisecond()),
     })
     .await
-    .wrap_err("inserting issue into DB")?;
+    .context("inserting issue into DB")?;
 
     Ok(())
 }
@@ -253,7 +258,7 @@ pub async fn notify_build_pass(
                 thanks for playing this round of Tier 3 rustc target breakage fixing! See y'all next time :3!\n\n<{url}>"),
             )
             .await
-            .wrap_err("creating update comment")?;
+            .context("creating update comment")?;
 
         github_client
             .issues()
@@ -262,7 +267,7 @@ pub async fn notify_build_pass(
             .state_reason(IssueStateReason::Completed)
             .send()
             .await
-            .wrap_err("closing issue")?;
+            .context("closing issue")?;
 
         db.finish_notification(issue.issue_number).await?;
     }

src/web.rs

@@ -7,15 +7,19 @@ use axum::{
     routing::get,
     Router,
 };
-use color_eyre::{eyre::Context, Result};
+use rootcause::{prelude::ResultExt, Report};
 use serde::Deserialize;
 use tracing::{error, info};
 
 use crate::{
     db::{BuildInfo, BuildMode, BuildStats, Db, Status},
-    notification,
+    notification, Result,
 };
 
+mod revs {
+    include!(concat!(env!("OUT_DIR"), "/revs.rs"));
+}
+
 #[derive(Clone)]
 pub struct AppState {
     pub db: Db,
@@ -28,8 +32,8 @@ pub async fn webserver(db: Db, notification_repo: String) -> Result<()> {
         .route("/build", get(web_build))
         .route("/target", get(web_target))
         .route("/nightly", get(web_nightly))
-        .route("/index.css", get(index_css))
-        .route("/index.js", get(index_js))
+        .route(revs::INDEX_CSS_NAME, get(index_css))
+        .route(revs::INDEX_JS_NAME, get(index_js))
         .with_state(AppState {
             db,
             notification_repo,
@@ -38,7 +42,10 @@ pub async fn webserver(db: Db, notification_repo: String) -> Result<()> {
     info!("Serving website on port 3000 (commit {})", crate::VERSION);
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
-    axum::serve(listener, app).await.wrap_err("failed to serve")
+    axum::serve(listener, app)
+        .await
+        .context("failed to serve")?;
+    Ok(())
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -325,31 +332,39 @@ async fn web_root(State(state): State<AppState>) -> impl IntoResponse {
         Ok(Html(page.render().unwrap()).into_response())
     }
 
-    render(state)
-        .await
-        .unwrap_or_else(|err: color_eyre::eyre::Error| {
-            error!(?err, "Error loading data for root page");
-            StatusCode::INTERNAL_SERVER_ERROR.into_response()
-        })
+    render(state).await.unwrap_or_else(|err: Report| {
+        error!(?err, "Error loading data for root page");
+        StatusCode::INTERNAL_SERVER_ERROR.into_response()
+    })
+}
+
+fn reply_static(body: &'static str, content_type: &'static str) -> impl IntoResponse {
+    (
+        [
+            (
+                axum::http::header::CONTENT_TYPE,
+                axum::http::HeaderValue::from_static(content_type),
+            ),
+            (
+                axum::http::header::CACHE_CONTROL,
+                axum::http::HeaderValue::from_static("public, max-age=31556952, immutable"),
+            ),
+        ],
+        body,
+    )
 }
 
 async fn index_css() -> impl IntoResponse {
-    (
-        [(
-            axum::http::header::CONTENT_TYPE,
-            axum::http::HeaderValue::from_static("text/css; charset=utf-8"),
-        )],
+    reply_static(
         include_str!("../static/index.css"),
+        "text/css; charset=utf-8",
     )
 }
 
 async fn index_js() -> impl IntoResponse {
-    (
-        [(
-            axum::http::header::CONTENT_TYPE,
-            axum::http::HeaderValue::from_static("application/javascript; charset=utf-8"),
-        )],
+    reply_static(
         include_str!("../static/index.js"),
+        "application/javascript; charset=utf-8",
     )
 }
 

templates/build.html

@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Build {{nightly}} {{target}}</title>
-    <link rel="stylesheet" href="/index.css" />
-    <script type="module" defer src="index.js"></script>
+    <link rel="stylesheet" href="{{ revs::INDEX_CSS_NAME }}" />
+    <script type="module" defer src="{{ revs::INDEX_JS_NAME }}"></script>
   </head>
   <body>
     <h1>

templates/index.html

@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Does it build?</title>
-    <link rel="stylesheet" href="index.css" />
-    <script type="module" defer src="index.js"></script>
+    <link rel="stylesheet" href="{{ revs::INDEX_CSS_NAME }}" />
+    <script type="module" defer src="{{ revs::INDEX_JS_NAME }}"></script>
   </head>
   <body>
     <h1>Does it build?</h1>

templates/nightly.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>{{nightly}} build history</title>
-    <link rel="stylesheet" href="/index.css" />
+    <link rel="stylesheet" href="{{ revs::INDEX_CSS_NAME }}" />
   </head>
   <body>
     <h1>Nightly build state for {{nightly}}</h1>

templates/target.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>{{target}} build history</title>
-    <link rel="stylesheet" href="/index.css" />
+    <link rel="stylesheet" href="{{ revs::INDEX_CSS_NAME }}" />
   </head>
   <body>
     <h1>Target build history for {{target}}</h1>