[INFO] fetching crate ruchei-itertools 0.0.0-a.3...
[INFO] checking ruchei-itertools-0.0.0-a.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ruchei-itertools 0.0.0-a.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ruchei-itertools 0.0.0-a.3
[INFO] finished tweaking crates.io crate ruchei-itertools 0.0.0-a.3
[INFO] tweaked toml for crates.io crate ruchei-itertools 0.0.0-a.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ruchei-itertools 0.0.0-a.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 ruchei-itertools 0.0.0-a.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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4972856c072cb835dff234881bb76f9646fc7ae65a82fad0922750f9f0899068
[INFO] running `Command { std: "docker" "start" "-a" "4972856c072cb835dff234881bb76f9646fc7ae65a82fad0922750f9f0899068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4972856c072cb835dff234881bb76f9646fc7ae65a82fad0922750f9f0899068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4972856c072cb835dff234881bb76f9646fc7ae65a82fad0922750f9f0899068", kill_on_drop: false }`
[INFO] [stdout] 4972856c072cb835dff234881bb76f9646fc7ae65a82fad0922750f9f0899068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6516acbc06dec8f646b419206c56f655a88efc881b63a56593e8ebd43f05323d
[INFO] running `Command { std: "docker" "start" "-a" "6516acbc06dec8f646b419206c56f655a88efc881b63a56593e8ebd43f05323d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.102
[INFO] [stderr]     Checking option-entry v0.1.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking ruchei-itertools v0.0.0-a.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:65:44
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let l = futures_util::stream::iter([1, 2, 3].map(Ok::<_, Infallible>));
[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<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:66:44
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let r = futures_util::stream::iter([1, 2].map(Ok::<_, Infallible>));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(i32, i32), Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 .eq([(1, 1), (2, 2)].map(Ok::<_, Infallible>)),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:75:44
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let l = futures_util::stream::iter([1, 2, 3].map(Ok::<_, Infallible>));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:76:44
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let r = futures_util::stream::iter([1, 2, 3].map(Ok::<_, Infallible>));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(i32, i32), Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 .eq([(1, 1), (2, 2), (3, 3)].map(Ok::<_, Infallible>)),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:85:44
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let l = futures_util::stream::iter([1, 2].map(Ok::<_, Infallible>));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:86:44
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let r = futures_util::stream::iter([1, 2, 3].map(Ok::<_, Infallible>));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(i32, i32), Infallible>
[INFO] [stdout]   --> src/try_zip_lazy.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 .eq([(1, 1), (2, 2)].map(Ok::<_, Infallible>)),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruchei-itertools` (lib test) due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6516acbc06dec8f646b419206c56f655a88efc881b63a56593e8ebd43f05323d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6516acbc06dec8f646b419206c56f655a88efc881b63a56593e8ebd43f05323d", kill_on_drop: false }`
[INFO] [stdout] 6516acbc06dec8f646b419206c56f655a88efc881b63a56593e8ebd43f05323d