[INFO] fetching crate holochain_core 0.0.34-alpha1...
[INFO] checking holochain_core-0.0.34-alpha1 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate holochain_core 0.0.34-alpha1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate holochain_core 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_core 0.0.34-alpha1
[INFO] finished tweaking crates.io crate holochain_core 0.0.34-alpha1
[INFO] tweaked toml for crates.io crate holochain_core 0.0.34-alpha1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] c79c7d264b3ddcfa7d821e77de0ff1848b00b238afe12bb220e165cd0d488a47
[INFO] running `"docker" "start" "-a" "c79c7d264b3ddcfa7d821e77de0ff1848b00b238afe12bb220e165cd0d488a47"`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling unwrap v1.2.1
[INFO] [stderr]     Checking detach v0.0.19
[INFO] [stderr]     Checking zeroize v0.10.1
[INFO] [stderr]     Checking unwrap_to v0.1.0
[INFO] [stderr]    Compiling openssl-src v111.6.0+1.1.1d
[INFO] [stderr]     Checking futures-timer v0.1.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling wabt-sys v0.5.4
[INFO] [stderr]     Checking capnp v0.10.0
[INFO] [stderr]    Compiling rusoto_core v0.40.0
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling dynomite-derive v0.5.2
[INFO] [stderr]     Checking num_cpus v1.11.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking getrandom v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking signal-hook-registry v1.1.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking directories v1.0.2
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling flate2 v1.0.12
[INFO] [stderr]    Compiling filetime v0.2.7
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking backtrace v0.3.27
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking signal-hook v0.1.11
[INFO] [stderr]     Checking nanoid v0.2.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking futures-backoff v0.1.0
[INFO] [stderr]     Checking holochain_common v0.0.34-alpha1
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking thrift_codec v0.1.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking uuid v0.4.0
[INFO] [stderr]    Compiling zip v0.3.3
[INFO] [stderr]     Checking rustracing v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]     Checking tempfile v3.0.7
[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 lib3h_crypto_api v0.0.19
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking serde_test v1.0.89
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking parking_lot v0.8.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking globset v0.4.2
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking clokwerk v0.1.0
[INFO] [stderr]     Checking lib3h_p2p_protocol v0.0.19
[INFO] [stderr]     Checking jsonrpc-core v14.0.1
[INFO] [stderr]     Checking jsonrpc-lite v0.5.0
[INFO] [stderr]     Checking holochain_logging v0.0.4
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking holochain_tracing v0.0.1
[INFO] [stderr]     Checking once_cell v0.1.8
[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" "c79c7d264b3ddcfa7d821e77de0ff1848b00b238afe12bb220e165cd0d488a47"`
[INFO] running `"docker" "rm" "-f" "c79c7d264b3ddcfa7d821e77de0ff1848b00b238afe12bb220e165cd0d488a47"`
[INFO] [stdout] c79c7d264b3ddcfa7d821e77de0ff1848b00b238afe12bb220e165cd0d488a47