[INFO] fetching crate lib3h_zombie_actor 0.0.19...
[INFO] checking lib3h_zombie_actor-0.0.19 against beta-2019-10-27 for pr-65897
[INFO] extracting crate lib3h_zombie_actor 0.0.19 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate lib3h_zombie_actor 0.0.19 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lib3h_zombie_actor 0.0.19
[INFO] finished tweaking crates.io crate lib3h_zombie_actor 0.0.19
[INFO] tweaked toml for crates.io crate lib3h_zombie_actor 0.0.19 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 976b84a4b7f4c0f6dde7ad1a004db690c0454eb1c6c1e0abf6691b5fb4d0aeb7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "976b84a4b7f4c0f6dde7ad1a004db690c0454eb1c6c1e0abf6691b5fb4d0aeb7"`
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking detach v0.0.19
[INFO] [stderr]    Compiling backtrace v0.3.27
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking nanoid v0.2.0
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking thrift_codec v0.1.1
[INFO] [stderr]     Checking rustracing v0.2.0
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking holochain_tracing v0.0.1
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/holochain_tracing-0.0.1/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `holochain_tracing`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "976b84a4b7f4c0f6dde7ad1a004db690c0454eb1c6c1e0abf6691b5fb4d0aeb7"`
[INFO] running `"docker" "rm" "-f" "976b84a4b7f4c0f6dde7ad1a004db690c0454eb1c6c1e0abf6691b5fb4d0aeb7"`
[INFO] [stdout] 976b84a4b7f4c0f6dde7ad1a004db690c0454eb1c6c1e0abf6691b5fb4d0aeb7