[INFO] fetching crate sim2h_server 0.0.34-alpha1...
[INFO] checking sim2h_server-0.0.34-alpha1 against beta-2019-10-27 for pr-65897
[INFO] extracting crate sim2h_server 0.0.34-alpha1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate sim2h_server 0.0.34-alpha1 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 sim2h_server 0.0.34-alpha1
[INFO] finished tweaking crates.io crate sim2h_server 0.0.34-alpha1
[INFO] tweaked toml for crates.io crate sim2h_server 0.0.34-alpha1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate sim2h_server 0.0.34-alpha1 already has a lockfile, it will not be regenerated
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 263703209d77f2d4315f4b51e22fa9fb6c19ec89c59cb167e54ccaef0720f755
[INFO] running `"docker" "start" "-a" "263703209d77f2d4315f4b51e22fa9fb6c19ec89c59cb167e54ccaef0720f755"`
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling flate2 v1.0.12
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]     Checking openssl v0.10.25
[INFO] [stderr]    Compiling zip v0.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking rustracing v0.2.0
[INFO] [stderr]     Checking rust-base58 v0.0.4
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking parking_lot v0.8.0
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking lib3h_crypto_api v0.0.19
[INFO] [stderr]     Checking lib3h_p2p_protocol v0.0.19
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking holochain_logging v0.0.4
[INFO] [stderr]     Checking tungstenite v0.9.1
[INFO] [stderr]    Compiling http_req v0.2.1
[INFO] [stderr]     Checking holochain_tracing v0.0.1
[INFO] [stderr]    Compiling holochain_json_derive v0.0.17
[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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "263703209d77f2d4315f4b51e22fa9fb6c19ec89c59cb167e54ccaef0720f755"`
[INFO] running `"docker" "rm" "-f" "263703209d77f2d4315f4b51e22fa9fb6c19ec89c59cb167e54ccaef0720f755"`
[INFO] [stdout] 263703209d77f2d4315f4b51e22fa9fb6c19ec89c59cb167e54ccaef0720f755