[INFO] cloning repository https://github.com/andrewronscki/observability_with_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewronscki/observability_with_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewronscki%2Fobservability_with_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewronscki%2Fobservability_with_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7f4f629d6daab72190d6681ef261cab9d46da81
[INFO] checking andrewronscki/observability_with_rust 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%2Fandrewronscki%2Fobservability_with_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/andrewronscki/observability_with_rust
[INFO] finished tweaking git repo https://github.com/andrewronscki/observability_with_rust
[INFO] tweaked toml for git repo https://github.com/andrewronscki/observability_with_rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/andrewronscki/observability_with_rust 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/andrewronscki/observability_with_rust 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3e3e0f641562b543ad9e2d269caeb3d15b416ac7bd664da8a90b7d8856628262
[INFO] running `Command { std: "docker" "start" "-a" "3e3e0f641562b543ad9e2d269caeb3d15b416ac7bd664da8a90b7d8856628262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e3e0f641562b543ad9e2d269caeb3d15b416ac7bd664da8a90b7d8856628262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e3e0f641562b543ad9e2d269caeb3d15b416ac7bd664da8a90b7d8856628262", kill_on_drop: false }`
[INFO] [stdout] 3e3e0f641562b543ad9e2d269caeb3d15b416ac7bd664da8a90b7d8856628262
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e23c9a99a2189e0108c828b1620779076542f024688f3b5cbaa59b4ea10e6d25
[INFO] running `Command { std: "docker" "start" "-a" "e23c9a99a2189e0108c828b1620779076542f024688f3b5cbaa59b4ea10e6d25", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling anyhow v1.0.88
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling axum v0.6.20
[INFO] [stderr]     Checking matchit v0.7.3
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling axum-core v0.4.3
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]    Compiling axum v0.7.5
[INFO] [stderr]     Checking tracing-log v0.1.4
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling prost-derive v0.11.9
[INFO] [stderr]     Checking prost v0.11.9
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling async-trait v0.1.82
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking opentelemetry_api v0.19.0
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.12
[INFO] [stderr]     Checking tokio-stream v0.1.16
[INFO] [stderr]     Checking tokio-io-timeout v1.2.0
[INFO] [stderr]     Checking hyper v1.4.1
[INFO] [stderr]     Checking serde_path_to_error v0.1.16
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking opentelemetry_sdk v0.19.0
[INFO] [stderr]     Checking hyper-util v0.1.8
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking opentelemetry v0.19.0
[INFO] [stderr]     Checking opentelemetry-semantic-conventions v0.11.0
[INFO] [stderr]     Checking opentelemetry-prometheus v0.12.0
[INFO] [stderr]     Checking tracing-opentelemetry v0.19.0
[INFO] [stderr]     Checking hyper v0.14.30
[INFO] [stderr]     Checking hyper-timeout v0.4.1
[INFO] [stderr]     Checking tonic v0.8.3
[INFO] [stderr]     Checking opentelemetry-proto v0.2.0
[INFO] [stderr]     Checking opentelemetry-otlp v0.12.0
[INFO] [stderr]     Checking observability_with_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/prometheus.rs:14:44: 14:70}, hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 |           async move {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 14 | |             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 15 | |                 let exporter = exporter.clone();
[INFO] [stdout] 16 | |                 async move {
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }))
[INFO] [stdout] 31 | |         }
[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<{closure@src/prometheus.rs:14:44: 14:70}, hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 | /             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 15 | |                 let exporter = exporter.clone();
[INFO] [stdout] 16 | |                 async move {
[INFO] [stdout] 17 | |                     let encoder = TextEncoder::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }))
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::Response<hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |                   async move {
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 17 | |                     let encoder = TextEncoder::new();
[INFO] [stdout] 18 | |                     let metric_families = exporter.registry().gather();
[INFO] [stdout] 19 | |                     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 29 | |                 }
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::Response<hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | /                     Ok::<_, Infallible>(
[INFO] [stdout] 23 | |                         Response::builder()
[INFO] [stdout] 24 | |                             .status(200)
[INFO] [stdout] 25 | |                             .header("Content-Type", encoder.format_type())
[INFO] [stdout] 26 | |                             .body(Body::from(buffer))
[INFO] [stdout] 27 | |                             .unwrap(),
[INFO] [stdout] 28 | |                     )
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `observability_with_rust` (bin "observability_with_rust" test) due to 4 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<{closure@src/prometheus.rs:14:44: 14:70}, hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 |           async move {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 14 | |             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 15 | |                 let exporter = exporter.clone();
[INFO] [stdout] 16 | |                 async move {
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }))
[INFO] [stdout] 31 | |         }
[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<{closure@src/prometheus.rs:14:44: 14:70}, hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 | /             Ok::<_, Infallible>(service_fn(move |_req: Request<Body>| {
[INFO] [stdout] 15 | |                 let exporter = exporter.clone();
[INFO] [stdout] 16 | |                 async move {
[INFO] [stdout] 17 | |                     let encoder = TextEncoder::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }))
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::Response<hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |                   async move {
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 17 | |                     let encoder = TextEncoder::new();
[INFO] [stdout] 18 | |                     let metric_families = exporter.registry().gather();
[INFO] [stdout] 19 | |                     let mut buffer = Vec::new();
[INFO] [stdout] ...  |
[INFO] [stdout] 29 | |                 }
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::Response<hyper::Body>, Infallible>
[INFO] [stdout]   --> src/prometheus.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | /                     Ok::<_, Infallible>(
[INFO] [stdout] 23 | |                         Response::builder()
[INFO] [stdout] 24 | |                             .status(200)
[INFO] [stdout] 25 | |                             .header("Content-Type", encoder.format_type())
[INFO] [stdout] 26 | |                             .body(Body::from(buffer))
[INFO] [stdout] 27 | |                             .unwrap(),
[INFO] [stdout] 28 | |                     )
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `observability_with_rust` (bin "observability_with_rust") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "e23c9a99a2189e0108c828b1620779076542f024688f3b5cbaa59b4ea10e6d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e23c9a99a2189e0108c828b1620779076542f024688f3b5cbaa59b4ea10e6d25", kill_on_drop: false }`
[INFO] [stdout] e23c9a99a2189e0108c828b1620779076542f024688f3b5cbaa59b4ea10e6d25
