[INFO] fetching crate prometheus-measures-exporter 0.0.3...
[INFO] checking prometheus-measures-exporter-0.0.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate prometheus-measures-exporter 0.0.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate prometheus-measures-exporter 0.0.3
[INFO] finished tweaking crates.io crate prometheus-measures-exporter 0.0.3
[INFO] tweaked toml for crates.io crate prometheus-measures-exporter 0.0.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus-measures-exporter 0.0.3 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-measures-exporter 0.0.3 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 39b266f1d3d3dd251ebdfd744d760658bbb2bc380aef25324fed14dcf4100c16
[INFO] running `Command { std: "docker" "start" "-a" "39b266f1d3d3dd251ebdfd744d760658bbb2bc380aef25324fed14dcf4100c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39b266f1d3d3dd251ebdfd744d760658bbb2bc380aef25324fed14dcf4100c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b266f1d3d3dd251ebdfd744d760658bbb2bc380aef25324fed14dcf4100c16", kill_on_drop: false }`
[INFO] [stdout] 39b266f1d3d3dd251ebdfd744d760658bbb2bc380aef25324fed14dcf4100c16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1f4f3f285af8be8ea71d40fb459c7b34eaef7931f489439aed32b73661e4ef28
[INFO] running `Command { std: "docker" "start" "-a" "1f4f3f285af8be8ea71d40fb459c7b34eaef7931f489439aed32b73661e4ef28", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tokio-util v0.7.15
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking prometheus-measures-exporter v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<fn(hyper::Request<Body>) -> impl Future<Output = Result<Response<Body>, Infallible>> {metrics}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:53
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let service = make_service_fn(|_conn| async { Ok::<_, Infallible>(service_fn(metrics)) });
[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<hyper::service::util::ServiceFn<fn(hyper::Request<Body>) -> impl Future<Output = Result<Response<Body>, Infallible>> {metrics}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:55
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let service = make_service_fn(|_conn| async { Ok::<_, Infallible>(service_fn(metrics)) });
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:77
[INFO] [stdout]    |
[INFO] [stdout] 31 |   async fn metrics(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 32 | |     let metric_families = prometheus::gather();
[INFO] [stdout] 33 | |     let encoder = TextEncoder::new();
[INFO] [stdout] 34 | |     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     Ok(response)
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:77
[INFO] [stdout]    |
[INFO] [stdout] 31 |   async fn metrics(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 32 | |     let metric_families = prometheus::gather();
[INFO] [stdout] 33 | |     let encoder = TextEncoder::new();
[INFO] [stdout] 34 | |     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     Ok(response)
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     Ok(response)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus-measures-exporter` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<fn(hyper::Request<Body>) -> impl Future<Output = Result<Response<Body>, Infallible>> {metrics}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:53
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let service = make_service_fn(|_conn| async { Ok::<_, Infallible>(service_fn(metrics)) });
[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<hyper::service::util::ServiceFn<fn(hyper::Request<Body>) -> impl Future<Output = Result<Response<Body>, Infallible>> {metrics}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:55
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let service = make_service_fn(|_conn| async { Ok::<_, Infallible>(service_fn(metrics)) });
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:77
[INFO] [stdout]    |
[INFO] [stdout] 31 |   async fn metrics(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 32 | |     let metric_families = prometheus::gather();
[INFO] [stdout] 33 | |     let encoder = TextEncoder::new();
[INFO] [stdout] 34 | |     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     Ok(response)
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:31:77
[INFO] [stdout]    |
[INFO] [stdout] 31 |   async fn metrics(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 32 | |     let metric_families = prometheus::gather();
[INFO] [stdout] 33 | |     let encoder = TextEncoder::new();
[INFO] [stdout] 34 | |     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     Ok(response)
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     Ok(response)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus-measures-exporter` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "1f4f3f285af8be8ea71d40fb459c7b34eaef7931f489439aed32b73661e4ef28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f4f3f285af8be8ea71d40fb459c7b34eaef7931f489439aed32b73661e4ef28", kill_on_drop: false }`
[INFO] [stdout] 1f4f3f285af8be8ea71d40fb459c7b34eaef7931f489439aed32b73661e4ef28
