[INFO] fetching crate rockscrew 0.2.1...
[INFO] checking rockscrew-0.2.1 against 1.95.0 for pr-155915
[INFO] extracting crate rockscrew 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rockscrew 0.2.1
[INFO] finished tweaking crates.io crate rockscrew 0.2.1
[INFO] tweaked toml for crates.io crate rockscrew 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rockscrew 0.2.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rockscrew 0.2.1 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compio-runtime v0.6.2
[INFO] [stderr]   Downloaded compio-io v0.5.0
[INFO] [stderr]   Downloaded compio-tls v0.4.0
[INFO] [stderr]   Downloaded compio-buf v0.5.1
[INFO] [stderr]   Downloaded compio-macros v0.1.2
[INFO] [stderr]   Downloaded compio v0.13.2
[INFO] [stderr]   Downloaded rustls-pki-types v1.10.0
[INFO] [stderr]   Downloaded compio-signal v0.4.0
[INFO] [stderr]   Downloaded compio-log v0.1.0
[INFO] [stderr]   Downloaded thiserror-impl v2.0.3
[INFO] [stderr]   Downloaded compio-dispatcher v0.5.0
[INFO] [stderr]   Downloaded compio-process v0.3.0
[INFO] [stderr]   Downloaded aligned-array v1.0.1
[INFO] [stderr]   Downloaded thiserror v2.0.3
[INFO] [stderr]   Downloaded compio-net v0.6.0
[INFO] [stderr]   Downloaded compio-quic v0.2.0
[INFO] [stderr]   Downloaded compio-fs v0.6.0
[INFO] [stderr]   Downloaded compio-driver v0.6.1
[INFO] [stderr]   Downloaded io-uring v0.7.2
[INFO] [stderr]   Downloaded rustls v0.23.19
[INFO] [stderr]   Downloaded libc v0.2.166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e2ca1a52976dd6a0ced6cadff431d4e8f7a7b3e8ed5349155566310ce68da75
[INFO] running `Command { std: "docker" "start" "-a" "8e2ca1a52976dd6a0ced6cadff431d4e8f7a7b3e8ed5349155566310ce68da75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e2ca1a52976dd6a0ced6cadff431d4e8f7a7b3e8ed5349155566310ce68da75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2ca1a52976dd6a0ced6cadff431d4e8f7a7b3e8ed5349155566310ce68da75", kill_on_drop: false }`
[INFO] [stdout] 8e2ca1a52976dd6a0ced6cadff431d4e8f7a7b3e8ed5349155566310ce68da75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78267c496084442762dede07b1ab44e64748b44013446961de417bc1eeeac901
[INFO] running `Command { std: "docker" "start" "-a" "78267c496084442762dede07b1ab44e64748b44013446961de417bc1eeeac901", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling libc v0.2.166
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]    Compiling io-uring v0.7.2
[INFO] [stderr]    Compiling compio-driver v0.6.1
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.13
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling indexmap v2.6.0
[INFO] [stderr]    Compiling winnow v0.6.20
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling compio-fs v0.6.0
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking compio-log v0.1.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking compio-buf v0.5.1
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking os_pipe v1.2.1
[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-1949cf8c6b5b557f/compio-buf-0.5.1/src/lib.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "allocator_api", feature(allocator_api))]
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compio-buf` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "78267c496084442762dede07b1ab44e64748b44013446961de417bc1eeeac901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78267c496084442762dede07b1ab44e64748b44013446961de417bc1eeeac901", kill_on_drop: false }`
[INFO] [stdout] 78267c496084442762dede07b1ab44e64748b44013446961de417bc1eeeac901