[INFO] cloning repository https://github.com/cdriehuys/pi-cooler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdriehuys/pi-cooler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdriehuys%2Fpi-cooler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdriehuys%2Fpi-cooler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8bc22ed0b2f2551af1313f740e31742ceb347b8
[INFO] checking cdriehuys/pi-cooler against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdriehuys%2Fpi-cooler" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/cdriehuys/pi-cooler
[INFO] finished tweaking git repo https://github.com/cdriehuys/pi-cooler
[INFO] tweaked toml for git repo https://github.com/cdriehuys/pi-cooler written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cdriehuys/pi-cooler 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 git repo https://github.com/cdriehuys/pi-cooler 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] 775117ec14e666908a6aff4870c2aa3a44f8d8d1ffc2c2b9c796c5a80db972b4
[INFO] running `Command { std: "docker" "start" "-a" "775117ec14e666908a6aff4870c2aa3a44f8d8d1ffc2c2b9c796c5a80db972b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "775117ec14e666908a6aff4870c2aa3a44f8d8d1ffc2c2b9c796c5a80db972b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "775117ec14e666908a6aff4870c2aa3a44f8d8d1ffc2c2b9c796c5a80db972b4", kill_on_drop: false }`
[INFO] [stdout] 775117ec14e666908a6aff4870c2aa3a44f8d8d1ffc2c2b9c796c5a80db972b4
[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] 59d455ba711a7384782d1812e4907e91f9ab72a1e529419cd12e70ae0f678014
[INFO] running `Command { std: "docker" "start" "-a" "59d455ba711a7384782d1812e4907e91f9ab72a1e529419cd12e70ae0f678014", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.94
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking http v0.2.7
[INFO] [stderr]     Checking dtoa v1.0.2
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking rppal v0.13.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling prometheus-client-derive-text-encode v0.2.0
[INFO] [stderr]     Checking prometheus-client v0.16.0
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking pi-cooler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `AppState` is never constructed
[INFO] [stdout]   --> src/main.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct AppState {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:29:88
[INFO] [stdout]    |
[INFO] [stdout] 29 |   async fn encode_metrics(registry: Arc<Registry>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  ________________________________________________________________________________________^
[INFO] [stdout] 30 | |     let mut encoded_metrics = vec![];
[INFO] [stdout] 31 | |     encode(&mut encoded_metrics, &registry).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | | }
[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: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:29:88
[INFO] [stdout]    |
[INFO] [stdout] 29 |   async fn encode_metrics(registry: Arc<Registry>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  ________________________________________________________________________________________^
[INFO] [stdout] 30 | |     let mut encoded_metrics = vec![];
[INFO] [stdout] 31 | |     encode(&mut encoded_metrics, &registry).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Ok(Response::new(encoded_metrics.into()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:61:44: 61:70}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:59:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |           async move {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 60 | |             // service_fn converts our function into a `Service`
[INFO] [stdout] 61 | |             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 62 | |                 let registry_ref = registry_ref.clone();
[INFO] [stdout] 63 | |                 encode_metrics(registry_ref)
[INFO] [stdout] 64 | |             }))
[INFO] [stdout] 65 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:61:44: 61:70}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 | /             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 62 | |                 let registry_ref = registry_ref.clone();
[INFO] [stdout] 63 | |                 encode_metrics(registry_ref)
[INFO] [stdout] 64 | |             }))
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pi-cooler` (bin "pi-cooler" test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `AppState` is never constructed
[INFO] [stdout]   --> src/main.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct AppState {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:29:88
[INFO] [stdout]    |
[INFO] [stdout] 29 |   async fn encode_metrics(registry: Arc<Registry>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  ________________________________________________________________________________________^
[INFO] [stdout] 30 | |     let mut encoded_metrics = vec![];
[INFO] [stdout] 31 | |     encode(&mut encoded_metrics, &registry).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | | }
[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: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:29:88
[INFO] [stdout]    |
[INFO] [stdout] 29 |   async fn encode_metrics(registry: Arc<Registry>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  ________________________________________________________________________________________^
[INFO] [stdout] 30 | |     let mut encoded_metrics = vec![];
[INFO] [stdout] 31 | |     encode(&mut encoded_metrics, &registry).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Ok(Response::new(encoded_metrics.into()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:61:44: 61:70}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:59:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |           async move {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 60 | |             // service_fn converts our function into a `Service`
[INFO] [stdout] 61 | |             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 62 | |                 let registry_ref = registry_ref.clone();
[INFO] [stdout] 63 | |                 encode_metrics(registry_ref)
[INFO] [stdout] 64 | |             }))
[INFO] [stdout] 65 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:61:44: 61:70}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 | /             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 62 | |                 let registry_ref = registry_ref.clone();
[INFO] [stdout] 63 | |                 encode_metrics(registry_ref)
[INFO] [stdout] 64 | |             }))
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pi-cooler` (bin "pi-cooler") due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "59d455ba711a7384782d1812e4907e91f9ab72a1e529419cd12e70ae0f678014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59d455ba711a7384782d1812e4907e91f9ab72a1e529419cd12e70ae0f678014", kill_on_drop: false }`
[INFO] [stdout] 59d455ba711a7384782d1812e4907e91f9ab72a1e529419cd12e70ae0f678014
