[INFO] fetching crate fluke-buffet 0.1.0...
[INFO] testing fluke-buffet-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate fluke-buffet 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate fluke-buffet 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fluke-buffet 0.1.0
[INFO] finished tweaking crates.io crate fluke-buffet 0.1.0
[INFO] tweaked toml for crates.io crate fluke-buffet 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fluke-maybe-uring v0.1.1
[INFO] [stderr]   Downloaded tokio-uring v0.4.0
[INFO] [stderr]   Downloaded io-uring v0.5.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8edbfa822c1bfe25ee61e391045af9cc49189f5e7f897e9bba809104e147ee93
[INFO] running `Command { std: "docker" "start" "-a" "8edbfa822c1bfe25ee61e391045af9cc49189f5e7f897e9bba809104e147ee93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8edbfa822c1bfe25ee61e391045af9cc49189f5e7f897e9bba809104e147ee93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8edbfa822c1bfe25ee61e391045af9cc49189f5e7f897e9bba809104e147ee93", kill_on_drop: false }`
[INFO] [stdout] 8edbfa822c1bfe25ee61e391045af9cc49189f5e7f897e9bba809104e147ee93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 039a805a0b5d72e09d93cc43d9987d7f730a52961aaae652227eea588da4871e
[INFO] running `Command { std: "docker" "start" "-a" "039a805a0b5d72e09d93cc43d9987d7f730a52961aaae652227eea588da4871e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling io-uring v0.5.13
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling eyre v0.6.11
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling bytemuck v1.14.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling pretty-hex v0.3.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling http v0.2.11
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling socket2 v0.5.5
[INFO] [stderr]    Compiling mio v0.8.10
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling memmap2 v0.7.1
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio v1.35.1
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tokio-uring v0.4.0
[INFO] [stderr]    Compiling fluke-maybe-uring v0.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/fluke-maybe-uring-0.1.1/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(async_fn_in_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `async_fn_in_trait` has been stable since `1.75.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fluke-maybe-uring` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "039a805a0b5d72e09d93cc43d9987d7f730a52961aaae652227eea588da4871e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "039a805a0b5d72e09d93cc43d9987d7f730a52961aaae652227eea588da4871e", kill_on_drop: false }`
[INFO] [stdout] 039a805a0b5d72e09d93cc43d9987d7f730a52961aaae652227eea588da4871e
