[INFO] cloning repository https://github.com/rust-cc/rckad
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-cc/rckad" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cc%2Frckad", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cc%2Frckad'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c0de40ceb947d6242114104f27faad14fc0a83c
[INFO] checking rust-cc/rckad against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cc%2Frckad" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-cc/rckad 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 git repo https://github.com/rust-cc/rckad
[INFO] finished tweaking git repo https://github.com/rust-cc/rckad
[INFO] tweaked toml for git repo https://github.com/rust-cc/rckad written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-cc/rckad already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded postcard-cobs v0.1.5-pre
[INFO] [stderr]   Downloaded bit-vec v0.6.1
[INFO] [stderr]   Downloaded syn v1.0.41
[INFO] [stderr]   Downloaded blake3 v0.3.6
[INFO] [stderr]   Downloaded postcard v0.5.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.21
[INFO] [stderr]   Downloaded serde_derive v1.0.116
[INFO] [stderr]   Downloaded serde v1.0.116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] a97eaed90ddda9bb14f621e30846cc29975a5fda02b79f7e2c5ce6a8c9bdbcbf
[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" "a97eaed90ddda9bb14f621e30846cc29975a5fda02b79f7e2c5ce6a8c9bdbcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a97eaed90ddda9bb14f621e30846cc29975a5fda02b79f7e2c5ce6a8c9bdbcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97eaed90ddda9bb14f621e30846cc29975a5fda02b79f7e2c5ce6a8c9bdbcbf", kill_on_drop: false }`
[INFO] [stdout] a97eaed90ddda9bb14f621e30846cc29975a5fda02b79f7e2c5ce6a8c9bdbcbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 5b74c99c6f144bc022c8f67b0420684b54b43d08fc8cb3b3ded3dbce7ebe4fca
[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" "5b74c99c6f144bc022c8f67b0420684b54b43d08fc8cb3b3ded3dbce7ebe4fca", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking bit-vec v0.6.1
[INFO] [stderr]    Compiling blake3 v0.3.6
[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/bit-vec-0.6.1/src/lib.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 | #![cfg_attr(not(feature = "std"), feature(alloc_prelude))]
[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 `bit-vec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5b74c99c6f144bc022c8f67b0420684b54b43d08fc8cb3b3ded3dbce7ebe4fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b74c99c6f144bc022c8f67b0420684b54b43d08fc8cb3b3ded3dbce7ebe4fca", kill_on_drop: false }`
[INFO] [stdout] 5b74c99c6f144bc022c8f67b0420684b54b43d08fc8cb3b3ded3dbce7ebe4fca
