[INFO] fetching crate holochain 0.0.34-alpha1...
[INFO] checking holochain-0.0.34-alpha1 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate holochain 0.0.34-alpha1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate holochain 0.0.34-alpha1 on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate holochain 0.0.34-alpha1
[INFO] finished tweaking crates.io crate holochain 0.0.34-alpha1
[INFO] tweaked toml for crates.io crate holochain 0.0.34-alpha1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate holochain 0.0.34-alpha1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "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" "+5e633973aa9255a88b65a39484627bb54e6044b3" "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] 99c8fbb2e56493b80e7d55cd7fc747add34cd3ddd4ccb06e618ff770388339c4
[INFO] running `"docker" "start" "-a" "99c8fbb2e56493b80e7d55cd7fc747add34cd3ddd4ccb06e618ff770388339c4"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling miniz_oxide v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking signal-hook v0.1.10
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking serde_test v1.0.89
[INFO] [stderr]     Checking bincode v1.2.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking serde_regex v0.3.1
[INFO] [stderr]     Checking rustracing v0.2.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling flate2 v1.0.12
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking parking_lot v0.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking globset v0.4.2
[INFO] [stderr]     Checking clokwerk v0.1.0
[INFO] [stderr]     Checking tiny_http v0.6.2
[INFO] [stderr]     Checking jsonrpc-core v14.0.1
[INFO] [stderr]     Checking lib3h_p2p_protocol v0.0.19
[INFO] [stderr]     Checking jsonrpc-lite v0.5.0
[INFO] [stderr]     Checking treediff v3.0.1
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]     Checking holochain_logging v0.0.4
[INFO] [stderr]     Checking lib3h_crypto_api v0.0.19
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking pickledb v0.4.0
[INFO] [stderr]    Compiling zip v0.3.3
[INFO] [stderr]     Checking once_cell v0.1.8
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]    Compiling holochain_json_derive v0.0.17
[INFO] [stderr]     Checking json-patch v0.2.2
[INFO] [stderr]     Checking holochain_tracing v0.0.1
[INFO] [stderr]     Checking rayon v1.2.0
[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" "99c8fbb2e56493b80e7d55cd7fc747add34cd3ddd4ccb06e618ff770388339c4"`
[INFO] running `"docker" "rm" "-f" "99c8fbb2e56493b80e7d55cd7fc747add34cd3ddd4ccb06e618ff770388339c4"`
[INFO] [stdout] 99c8fbb2e56493b80e7d55cd7fc747add34cd3ddd4ccb06e618ff770388339c4