[INFO] fetching crate prometheus_web_exporter 1.0.9...
[INFO] checking prometheus_web_exporter-1.0.9 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate prometheus_web_exporter 1.0.9 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate prometheus_web_exporter 1.0.9
[INFO] finished tweaking crates.io crate prometheus_web_exporter 1.0.9
[INFO] tweaked toml for crates.io crate prometheus_web_exporter 1.0.9 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus_web_exporter 1.0.9 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate prometheus_web_exporter 1.0.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb0c644ebebfe641fb6827f86ca03b8bb9ff8295cb9655ddf720eaa71ee8c226
[INFO] running `Command { std: "docker" "start" "-a" "bb0c644ebebfe641fb6827f86ca03b8bb9ff8295cb9655ddf720eaa71ee8c226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb0c644ebebfe641fb6827f86ca03b8bb9ff8295cb9655ddf720eaa71ee8c226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb0c644ebebfe641fb6827f86ca03b8bb9ff8295cb9655ddf720eaa71ee8c226", kill_on_drop: false }`
[INFO] [stdout] bb0c644ebebfe641fb6827f86ca03b8bb9ff8295cb9655ddf720eaa71ee8c226
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 092af4ebcf998ee5d0cb9f58e5657839a0c3b20d2bae848a32d0aea45c0b2cad
[INFO] running `Command { std: "docker" "start" "-a" "092af4ebcf998ee5d0cb9f58e5657839a0c3b20d2bae848a32d0aea45c0b2cad", kill_on_drop: false }`
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[INFO] [stderr]     Checking prometheus_web_exporter v1.0.9 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:87
[INFO] [stdout]    |
[INFO] [stdout] 12 |   async fn get_root(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  _______________________________________________________________________________________^
[INFO] [stdout] 13 | |     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     )))
[INFO] [stdout] 25 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:87
[INFO] [stdout]    |
[INFO] [stdout] 12 |   async fn get_root(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  _______________________________________________________________________________________^
[INFO] [stdout] 13 | |     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     )))
[INFO] [stdout] 25 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:87
[INFO] [stdout]    |
[INFO] [stdout] 12 |   async fn get_root(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  _______________________________________________________________________________________^
[INFO] [stdout] 13 | |     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     )))
[INFO] [stdout] 25 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] 16 | | <html>
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |         s.metrics_path.clone().unwrap()
[INFO] [stdout] 24 | |     )))
[INFO] [stdout]    | |_______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:90
[INFO] [stdout]    |
[INFO] [stdout] 27 |   async fn get_metrics(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 28 | |     let start = time::Instant::now();
[INFO] [stdout] 29 | |     let result = query::process_targets(&s).await;
[INFO] [stdout] 30 | |     let duration = start.elapsed();
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout] 39 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:90
[INFO] [stdout]    |
[INFO] [stdout] 27 |   async fn get_metrics(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 28 | |     let start = time::Instant::now();
[INFO] [stdout] 29 | |     let result = query::process_targets(&s).await;
[INFO] [stdout] 30 | |     let duration = start.elapsed();
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout] 39 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     Ok([
[INFO] [stdout] 32 | |         result.to_string(),
[INFO] [stdout] 33 | |         format!(
[INFO] [stdout] 34 | |             "web_exporter_scrape_duration_milliseconds {}",
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:87
[INFO] [stdout]    |
[INFO] [stdout] 12 |   async fn get_root(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  _______________________________________________________________________________________^
[INFO] [stdout] 13 | |     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     )))
[INFO] [stdout] 25 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<warp::reply::Html<std::string::String>, Infallible>
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     Ok(warp::reply::html(format!(
[INFO] [stdout] 14 | |         "
[INFO] [stdout] 15 | | <!DOCTYPE html>
[INFO] [stdout] 16 | | <html>
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |         s.metrics_path.clone().unwrap()
[INFO] [stdout] 24 | |     )))
[INFO] [stdout]    | |_______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:90
[INFO] [stdout]    |
[INFO] [stdout] 27 |   async fn get_metrics(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 28 | |     let start = time::Instant::now();
[INFO] [stdout] 29 | |     let result = query::process_targets(&s).await;
[INFO] [stdout] 30 | |     let duration = start.elapsed();
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout] 39 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:90
[INFO] [stdout]    |
[INFO] [stdout] 27 |   async fn get_metrics(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________________________________^
[INFO] [stdout] 28 | |     let start = time::Instant::now();
[INFO] [stdout] 29 | |     let result = query::process_targets(&s).await;
[INFO] [stdout] 30 | |     let duration = start.elapsed();
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout] 39 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     Ok([
[INFO] [stdout] 32 | |         result.to_string(),
[INFO] [stdout] 33 | |         format!(
[INFO] [stdout] 34 | |             "web_exporter_scrape_duration_milliseconds {}",
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     .join("\n"))
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:91
[INFO] [stdout]    |
[INFO] [stdout] 41 |   async fn get_settings(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________________________________________________________^
[INFO] [stdout] 42 | |     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:91
[INFO] [stdout]    |
[INFO] [stdout] 41 |   async fn get_settings(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________________________________________________________^
[INFO] [stdout] 42 | |     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:91
[INFO] [stdout]    |
[INFO] [stdout] 41 |   async fn get_settings(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________________________________________________________^
[INFO] [stdout] 42 | |     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:29
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:91
[INFO] [stdout]    |
[INFO] [stdout] 41 |   async fn get_settings(s: Arc<settings::Settings>) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________________________________________________________^
[INFO] [stdout] 42 | |     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | /     match serde_yaml::to_string(&*s) {
[INFO] [stdout] 43 | |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout] 44 | |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout] 45 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:29
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok(settings_str) => Ok(settings_str),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err(err) => Ok(format!("Invalid Settings: {}", err)),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus_web_exporter` (lib test) due to 11 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `prometheus_web_exporter` (lib) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "092af4ebcf998ee5d0cb9f58e5657839a0c3b20d2bae848a32d0aea45c0b2cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "092af4ebcf998ee5d0cb9f58e5657839a0c3b20d2bae848a32d0aea45c0b2cad", kill_on_drop: false }`
[INFO] [stdout] 092af4ebcf998ee5d0cb9f58e5657839a0c3b20d2bae848a32d0aea45c0b2cad
