[INFO] fetching crate constellation-rs 0.2.0-alpha.2...
[INFO] testing constellation-rs-0.2.0-alpha.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate constellation-rs 0.2.0-alpha.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate constellation-rs 0.2.0-alpha.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate constellation-rs 0.2.0-alpha.2
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate constellation-rs 0.2.0-alpha.2
[INFO] tweaked toml for crates.io crate constellation-rs 0.2.0-alpha.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate constellation-rs 0.2.0-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_traitobject v0.2.7
[INFO] [stderr]   Downloaded procfs v0.7.9
[INFO] [stderr]   Downloaded palaver v0.3.0-alpha.3
[INFO] [stderr]   Downloaded kube v0.27.0
[INFO] [stderr]   Downloaded constellation-internal v0.2.0-alpha.2
[INFO] [stderr]   Downloaded build_id v0.2.1
[INFO] [stderr]   Downloaded systemstat v0.1.5
[INFO] [stderr]   Downloaded socketstat v0.1.0
[INFO] [stderr]   Downloaded serde_pipe v0.1.3
[INFO] [stderr]   Downloaded relative v0.2.2
[INFO] [stderr]   Downloaded notifier v0.1.3
[INFO] [stderr]   Downloaded serde_closure v0.3.1
[INFO] [stderr]   Downloaded alloc_counter_macro v0.0.1
[INFO] [stderr]   Downloaded metatype v0.2.0
[INFO] [stderr]   Downloaded serde_closure_derive v0.3.1
[INFO] [stderr]   Downloaded tcp_typed v0.1.4
[INFO] [stderr]   Downloaded alloc_counter v0.0.2
[INFO] [stderr]   Downloaded replace_with v0.1.5
[INFO] [stderr]   Downloaded deploy-temp-fringe v1.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efc40339149bb717282f24f52c1e70b5611e2f50593bdf914d6672ae2555b854
[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" "efc40339149bb717282f24f52c1e70b5611e2f50593bdf914d6672ae2555b854", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efc40339149bb717282f24f52c1e70b5611e2f50593bdf914d6672ae2555b854", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efc40339149bb717282f24f52c1e70b5611e2f50593bdf914d6672ae2555b854", kill_on_drop: false }`
[INFO] [stdout] efc40339149bb717282f24f52c1e70b5611e2f50593bdf914d6672ae2555b854
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47018670a1a985a864ed3ec9af78445baa657d2b564b295aec23273f254c95b6
[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" "47018670a1a985a864ed3ec9af78445baa657d2b564b295aec23273f254c95b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling heapless v0.5.5
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling build_id v0.2.1
[INFO] [stderr]    Compiling twox-hash v1.5.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling libflate_lz77 v1.0.0
[INFO] [stderr]    Compiling relative v0.2.2
[INFO] [stderr]    Compiling replace_with v0.1.5
[INFO] [stderr]    Compiling metatype v0.2.0
[INFO] [stderr]    Compiling constellation-rs v0.2.0-alpha.2 (/opt/rustwide/workdir)
[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/metatype-0.2.0/src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | #![feature(arbitrary_self_types)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/metatype-0.2.0/src/lib.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(raw)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/metatype-0.2.0/src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | #![feature(slice_from_raw_parts)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/metatype-0.2.0/src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `metatype`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "47018670a1a985a864ed3ec9af78445baa657d2b564b295aec23273f254c95b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47018670a1a985a864ed3ec9af78445baa657d2b564b295aec23273f254c95b6", kill_on_drop: false }`
[INFO] [stdout] 47018670a1a985a864ed3ec9af78445baa657d2b564b295aec23273f254c95b6