[INFO] fetching crate tokio-lk 0.2.2...
[INFO] checking tokio-lk-0.2.2 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate tokio-lk 0.2.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tokio-lk 0.2.2 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-lk 0.2.2
[INFO] finished tweaking crates.io crate tokio-lk 0.2.2
[INFO] tweaked toml for crates.io crate tokio-lk 0.2.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b378147effb98eb2b6355be717395f2f40b6061846e6c1280cc0b6bf7a06821a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b378147effb98eb2b6355be717395f2f40b6061846e6c1280cc0b6bf7a06821a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b378147effb98eb2b6355be717395f2f40b6061846e6c1280cc0b6bf7a06821a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b378147effb98eb2b6355be717395f2f40b6061846e6c1280cc0b6bf7a06821a", kill_on_drop: false }`
[INFO] [stdout] b378147effb98eb2b6355be717395f2f40b6061846e6c1280cc0b6bf7a06821a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5faafe0a0a5f515ca6df254bbfdba2f8b0a599d9c4f1d197b22a9b8cd3bf8b01
[INFO] running `Command { std: "docker" "start" "-a" "5faafe0a0a5f515ca6df254bbfdba2f8b0a599d9c4f1d197b22a9b8cd3bf8b01", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.7.2/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     feature(
[INFO] [stdout] 16 | |         alloc_layout_extra,
[INFO] [stdout] 17 | |         allocator_api,
[INFO] [stdout] 18 | |         ptr_offset_from,
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |         specialization,
[INFO] [stdout] 23 | |     )
[INFO] [stdout]    | |_____^
[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 `hashbrown` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5faafe0a0a5f515ca6df254bbfdba2f8b0a599d9c4f1d197b22a9b8cd3bf8b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5faafe0a0a5f515ca6df254bbfdba2f8b0a599d9c4f1d197b22a9b8cd3bf8b01", kill_on_drop: false }`
[INFO] [stdout] 5faafe0a0a5f515ca6df254bbfdba2f8b0a599d9c4f1d197b22a9b8cd3bf8b01
