[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 [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 [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 [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 [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 [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 [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 [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 [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 [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