[INFO] cloning repository https://github.com/hseeberger/tower-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hseeberger/tower-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhseeberger%2Ftower-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhseeberger%2Ftower-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6305c0edc7426314ac6c7f38e153422d2661ae41
[INFO] checking hseeberger/tower-experiments 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%2Fhseeberger%2Ftower-experiments" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/hseeberger/tower-experiments
[INFO] finished tweaking git repo https://github.com/hseeberger/tower-experiments
[INFO] tweaked toml for git repo https://github.com/hseeberger/tower-experiments written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hseeberger/tower-experiments 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/hseeberger/tower-experiments 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 644a5b18f129782cc9cecf4fa845a7258f214537ef1ed455318c50153a595524
[INFO] running `Command { std: "docker" "start" "-a" "644a5b18f129782cc9cecf4fa845a7258f214537ef1ed455318c50153a595524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "644a5b18f129782cc9cecf4fa845a7258f214537ef1ed455318c50153a595524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644a5b18f129782cc9cecf4fa845a7258f214537ef1ed455318c50153a595524", kill_on_drop: false }`
[INFO] [stdout] 644a5b18f129782cc9cecf4fa845a7258f214537ef1ed455318c50153a595524
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5656ca6a41f4eeb390e4052b5b2f7d47bd076b3d7a2fafc5c71ccbaab2696283
[INFO] running `Command { std: "docker" "start" "-a" "5656ca6a41f4eeb390e4052b5b2f7d47bd076b3d7a2fafc5c71ccbaab2696283", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking hdrhistogram v7.5.2
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking tokio-util v0.7.9
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking tower-experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<AlternatingReadyResponse, Infallible>
[INFO] [stdout]   --> src/alternating_ready.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |         ready(Ok(AlternatingReadyResponse))
[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<EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |         ready(Ok(EchoResponse(req.0)))
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tower-experiments` (lib) due to 2 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<AlternatingReadyResponse, Infallible>
[INFO] [stdout]   --> src/alternating_ready.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |         ready(Ok(AlternatingReadyResponse))
[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<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |         ready(Ok(EchoResponse(req.0)))
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let response = EchoService.call("Tower".into()).await;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:84:57
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let response = EchoService.call("Tower".into()).await;
[INFO] [stdout]    |                                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let response = EchoService.call("Tower".into()).await;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         assert!(response.is_ok());
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<echo::EchoResponse, Infallible>
[INFO] [stdout]   --> src/echo.rs:86:24
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let response = response.unwrap();
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tower-experiments` (lib test) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "5656ca6a41f4eeb390e4052b5b2f7d47bd076b3d7a2fafc5c71ccbaab2696283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5656ca6a41f4eeb390e4052b5b2f7d47bd076b3d7a2fafc5c71ccbaab2696283", kill_on_drop: false }`
[INFO] [stdout] 5656ca6a41f4eeb390e4052b5b2f7d47bd076b3d7a2fafc5c71ccbaab2696283
