[INFO] fetching crate flowly 0.4.10...
[INFO] checking flowly-0.4.10 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate flowly 0.4.10 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate flowly 0.4.10
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate flowly 0.4.10
[INFO] tweaked toml for crates.io crate flowly 0.4.10 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flowly 0.4.10 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 flowly 0.4.10 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 4b6858d820298b2b7de5ba71acf8108d496225308cd643a3780f0ccc9d900265
[INFO] running `Command { std: "docker" "start" "-a" "4b6858d820298b2b7de5ba71acf8108d496225308cd643a3780f0ccc9d900265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b6858d820298b2b7de5ba71acf8108d496225308cd643a3780f0ccc9d900265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b6858d820298b2b7de5ba71acf8108d496225308cd643a3780f0ccc9d900265", kill_on_drop: false }`
[INFO] [stdout] 4b6858d820298b2b7de5ba71acf8108d496225308cd643a3780f0ccc9d900265
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a0ea5f3ce318e33406f43f33860a5d7388194c50c11be752335571daa139f9c2
[INFO] running `Command { std: "docker" "start" "-a" "a0ea5f3ce318e33406f43f33860a5d7388194c50c11be752335571daa139f9c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking jiff v0.2.15
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking anstream v0.6.20
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]     Checking async-stream v0.3.6
[INFO] [stderr]     Checking env_logger v0.11.8
[INFO] [stderr]     Checking tokio v1.45.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking flowly-spsc v0.4.10
[INFO] [stderr]     Checking flowly-core v0.4.10
[INFO] [stderr]     Checking stream-cancel v0.8.2
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking flowly-service v0.4.10
[INFO] [stderr]     Checking flowly-io v0.4.10
[INFO] [stderr]     Checking flowly v0.4.10 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Error2>
[INFO] [stdout]   --> examples/demo.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | /         async_stream::try_stream! {
[INFO] [stdout] 16 | |             yield item as u64;
[INFO] [stdout] 17 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::__private::try_stream_inner` which comes from the expansion of the macro `async_stream::try_stream` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flowly` (example "demo") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Error2>
[INFO] [stdout]   --> examples/demo.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | /         async_stream::try_stream! {
[INFO] [stdout] 27 | |             yield item as u64 + 100;
[INFO] [stdout] 28 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__private::try_stream_inner` which comes from the expansion of the macro `async_stream::try_stream` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Error2>
[INFO] [stdout]   --> examples/demo.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | /         async_stream::try_stream! {
[INFO] [stdout] 39 | |             yield item as u64 * 100;
[INFO] [stdout] 40 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__private::try_stream_inner` which comes from the expansion of the macro `async_stream::try_stream` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a0ea5f3ce318e33406f43f33860a5d7388194c50c11be752335571daa139f9c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0ea5f3ce318e33406f43f33860a5d7388194c50c11be752335571daa139f9c2", kill_on_drop: false }`
[INFO] [stdout] a0ea5f3ce318e33406f43f33860a5d7388194c50c11be752335571daa139f9c2