[INFO] fetching crate chunked-bytes 0.3.0...
[INFO] checking chunked-bytes-0.3.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate chunked-bytes 0.3.0 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate chunked-bytes 0.3.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chunked-bytes 0.3.0
[INFO] finished tweaking crates.io crate chunked-bytes 0.3.0
[INFO] tweaked toml for crates.io crate chunked-bytes 0.3.0 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate crates.io crate chunked-bytes 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.83
[INFO] [stderr]   Downloaded generic-tests v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e1fe16f234b5776f4498ae76a32a0e4328785ff10b84c65221faebc30a46a91
[INFO] running `Command { std: "docker" "start" "-a" "9e1fe16f234b5776f4498ae76a32a0e4328785ff10b84c65221faebc30a46a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e1fe16f234b5776f4498ae76a32a0e4328785ff10b84c65221faebc30a46a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e1fe16f234b5776f4498ae76a32a0e4328785ff10b84c65221faebc30a46a91", kill_on_drop: false }`
[INFO] [stdout] 9e1fe16f234b5776f4498ae76a32a0e4328785ff10b84c65221faebc30a46a91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34a0329a80e26fc5407d91ae4d929f1eb400aedaf359afa4c5c60815c3cd7a51
[INFO] running `Command { std: "docker" "start" "-a" "34a0329a80e26fc5407d91ae4d929f1eb400aedaf359afa4c5c60815c3cd7a51", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.83
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]    Compiling tokio v1.1.0
[INFO] [stderr]     Checking chunked-bytes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]    Compiling generic-tests v0.1.1
[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_slice)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(write_all_vectored)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chunked-bytes` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "34a0329a80e26fc5407d91ae4d929f1eb400aedaf359afa4c5c60815c3cd7a51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a0329a80e26fc5407d91ae4d929f1eb400aedaf359afa4c5c60815c3cd7a51", kill_on_drop: false }`
[INFO] [stdout] 34a0329a80e26fc5407d91ae4d929f1eb400aedaf359afa4c5c60815c3cd7a51
