[INFO] fetching crate service-async 0.2.4...
[INFO] checking service-async-0.2.4 against 1.95.0 for pr-155915
[INFO] extracting crate service-async 0.2.4 into /workspace/builds/worker-3-tc1/source
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate service-async 0.2.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate service-async 0.2.4
[INFO] tweaked toml for crates.io crate service-async 0.2.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate service-async 0.2.4 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 service-async 0.2.4 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded monoio-macros v0.1.0
[INFO] [stderr]   Downloaded io-uring v0.6.0
[INFO] [stderr]   Downloaded auto-const-array v0.2.0
[INFO] [stderr]   Downloaded param v0.1.2
[INFO] [stderr]   Downloaded syn v2.0.18
[INFO] [stderr]   Downloaded monoio v0.2.1
[INFO] [stderr]   Downloaded libc v0.2.146
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] db22b69cf34fcc7fdebf7ebdf0e890261924452a29c987be6592e612f35bbc91
[INFO] running `Command { std: "docker" "start" "-a" "db22b69cf34fcc7fdebf7ebdf0e890261924452a29c987be6592e612f35bbc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db22b69cf34fcc7fdebf7ebdf0e890261924452a29c987be6592e612f35bbc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db22b69cf34fcc7fdebf7ebdf0e890261924452a29c987be6592e612f35bbc91", kill_on_drop: false }`
[INFO] [stdout] db22b69cf34fcc7fdebf7ebdf0e890261924452a29c987be6592e612f35bbc91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 3cb4c6afbda2aa204215ef7f19550cb94f4e326acab4b11fd24b024e8513fb62
[INFO] running `Command { std: "docker" "start" "-a" "3cb4c6afbda2aa204215ef7f19550cb94f4e326acab4b11fd24b024e8513fb62", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling io-uring v0.6.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking param v0.1.2
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking service-async v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]    Compiling auto-const-array v0.2.0
[INFO] [stderr]    Compiling monoio-macros v0.1.0
[INFO] [stderr]     Checking monoio v0.2.1
[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/monoio-0.2.1/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io_error_more)]
[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 `monoio` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3cb4c6afbda2aa204215ef7f19550cb94f4e326acab4b11fd24b024e8513fb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cb4c6afbda2aa204215ef7f19550cb94f4e326acab4b11fd24b024e8513fb62", kill_on_drop: false }`
[INFO] [stdout] 3cb4c6afbda2aa204215ef7f19550cb94f4e326acab4b11fd24b024e8513fb62