[INFO] cloning repository https://github.com/nicktretyakov/MLbalancer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicktretyakov/MLbalancer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2FMLbalancer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2FMLbalancer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1bf6bae9eada1445725cd96b1c32f0679b4a0d05
[INFO] checking nicktretyakov/MLbalancer 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%2Fnicktretyakov%2FMLbalancer" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nicktretyakov/MLbalancer
[INFO] finished tweaking git repo https://github.com/nicktretyakov/MLbalancer
[INFO] tweaked toml for git repo https://github.com/nicktretyakov/MLbalancer written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nicktretyakov/MLbalancer 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/nicktretyakov/MLbalancer 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] eb236120ffea478e6bb39497c4dbc85aec13ab163ccfdb835446c30179b8f8ea
[INFO] running `Command { std: "docker" "start" "-a" "eb236120ffea478e6bb39497c4dbc85aec13ab163ccfdb835446c30179b8f8ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb236120ffea478e6bb39497c4dbc85aec13ab163ccfdb835446c30179b8f8ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb236120ffea478e6bb39497c4dbc85aec13ab163ccfdb835446c30179b8f8ea", kill_on_drop: false }`
[INFO] [stdout] eb236120ffea478e6bb39497c4dbc85aec13ab163ccfdb835446c30179b8f8ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e07f61f7bd898bb0fddfaa7a2c8fc764398ec2f9c894fe40bcfd4f7f708ade86
[INFO] running `Command { std: "docker" "start" "-a" "e07f61f7bd898bb0fddfaa7a2c8fc764398ec2f9c894fe40bcfd4f7f708ade86", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking indexmap v2.9.0
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking zerovec v0.11.2
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.2
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking icu_normalizer v2.0.0
[INFO] [stderr]     Checking icu_properties v2.0.1
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[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 balancer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:617:41
[INFO] [stdout]     |
[INFO] [stdout] 617 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 618 | |     if req.uri().path() == "/lb-analytics" && req.method() == Method::GET {
[INFO] [stdout] 619 | |         return Ok(load_balancer.get_analytics().await);
[INFO] [stdout] ...   |
[INFO] [stdout] 662 | | }
[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:617:41
[INFO] [stdout]     |
[INFO] [stdout] 617 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 618 | |     if req.uri().path() == "/lb-analytics" && req.method() == Method::GET {
[INFO] [stdout] 619 | |         return Ok(load_balancer.get_analytics().await);
[INFO] [stdout] ...   |
[INFO] [stdout] 662 | | }
[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:619:16
[INFO] [stdout]     |
[INFO] [stdout] 619 |         return Ok(load_balancer.get_analytics().await);
[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:622:5
[INFO] [stdout]     |
[INFO] [stdout] 622 | /     match load_balancer.serve(req).await {
[INFO] [stdout] 623 | |         Ok(response) => Ok(response),
[INFO] [stdout] 624 | |         Err(e) => {
[INFO] [stdout] 625 | |             eprintln!("Load balancer error: {}", e);
[INFO] [stdout] ...   |
[INFO] [stdout] 661 | |     }
[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:623:25
[INFO] [stdout]     |
[INFO] [stdout] 623 |         Ok(response) => Ok(response),
[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:624:19
[INFO] [stdout]     |
[INFO] [stdout] 624 |           Err(e) => {
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 625 | |             eprintln!("Load balancer error: {}", e);
[INFO] [stdout] 626 | |
[INFO] [stdout] 627 | |             let (status, message) = match e {
[INFO] [stdout] ...   |
[INFO] [stdout] 659 | |                 .unwrap())
[INFO] [stdout] 660 | |         }
[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:648:13
[INFO] [stdout]     |
[INFO] [stdout] 648 | /             Ok(Response::builder()
[INFO] [stdout] 649 | |                 .status(status)
[INFO] [stdout] 650 | |                 .header("content-type", "application/json")
[INFO] [stdout] 651 | |                 .body(Body::from(
[INFO] [stdout] ...   |
[INFO] [stdout] 658 | |                 ))
[INFO] [stdout] 659 | |                 .unwrap())
[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:705:53: 705:63}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:705:20
[INFO] [stdout]     |
[INFO] [stdout] 705 |         async move { Ok::<_, Infallible>(service_fn(move |req| handle_service(req, lb.clone()))) }
[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:705:53: 705:63}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:705:22
[INFO] [stdout]     |
[INFO] [stdout] 705 |         async move { Ok::<_, Infallible>(service_fn(move |req| handle_service(req, lb.clone()))) }
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `balancer` (bin "balancer") due to 9 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<Response<Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:617:41
[INFO] [stdout]     |
[INFO] [stdout] 617 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 618 | |     if req.uri().path() == "/lb-analytics" && req.method() == Method::GET {
[INFO] [stdout] 619 | |         return Ok(load_balancer.get_analytics().await);
[INFO] [stdout] ...   |
[INFO] [stdout] 662 | | }
[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:617:41
[INFO] [stdout]     |
[INFO] [stdout] 617 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 618 | |     if req.uri().path() == "/lb-analytics" && req.method() == Method::GET {
[INFO] [stdout] 619 | |         return Ok(load_balancer.get_analytics().await);
[INFO] [stdout] ...   |
[INFO] [stdout] 662 | | }
[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:619:16
[INFO] [stdout]     |
[INFO] [stdout] 619 |         return Ok(load_balancer.get_analytics().await);
[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:622:5
[INFO] [stdout]     |
[INFO] [stdout] 622 | /     match load_balancer.serve(req).await {
[INFO] [stdout] 623 | |         Ok(response) => Ok(response),
[INFO] [stdout] 624 | |         Err(e) => {
[INFO] [stdout] 625 | |             eprintln!("Load balancer error: {}", e);
[INFO] [stdout] ...   |
[INFO] [stdout] 661 | |     }
[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:623:25
[INFO] [stdout]     |
[INFO] [stdout] 623 |         Ok(response) => Ok(response),
[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:624:19
[INFO] [stdout]     |
[INFO] [stdout] 624 |           Err(e) => {
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 625 | |             eprintln!("Load balancer error: {}", e);
[INFO] [stdout] 626 | |
[INFO] [stdout] 627 | |             let (status, message) = match e {
[INFO] [stdout] ...   |
[INFO] [stdout] 659 | |                 .unwrap())
[INFO] [stdout] 660 | |         }
[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:648:13
[INFO] [stdout]     |
[INFO] [stdout] 648 | /             Ok(Response::builder()
[INFO] [stdout] 649 | |                 .status(status)
[INFO] [stdout] 650 | |                 .header("content-type", "application/json")
[INFO] [stdout] 651 | |                 .body(Body::from(
[INFO] [stdout] ...   |
[INFO] [stdout] 658 | |                 ))
[INFO] [stdout] 659 | |                 .unwrap())
[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:705:53: 705:63}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:705:20
[INFO] [stdout]     |
[INFO] [stdout] 705 |         async move { Ok::<_, Infallible>(service_fn(move |req| handle_service(req, lb.clone()))) }
[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:705:53: 705:63}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:705:22
[INFO] [stdout]     |
[INFO] [stdout] 705 |         async move { Ok::<_, Infallible>(service_fn(move |req| handle_service(req, lb.clone()))) }
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `balancer` (bin "balancer" test) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "e07f61f7bd898bb0fddfaa7a2c8fc764398ec2f9c894fe40bcfd4f7f708ade86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e07f61f7bd898bb0fddfaa7a2c8fc764398ec2f9c894fe40bcfd4f7f708ade86", kill_on_drop: false }`
[INFO] [stdout] e07f61f7bd898bb0fddfaa7a2c8fc764398ec2f9c894fe40bcfd4f7f708ade86
