[INFO] fetching crate holochain_tracing_macros 0.0.24...
[INFO] testing holochain_tracing_macros-0.0.24 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate holochain_tracing_macros 0.0.24 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate holochain_tracing_macros 0.0.24 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 holochain_tracing_macros 0.0.24
[INFO] finished tweaking crates.io crate holochain_tracing_macros 0.0.24
[INFO] tweaked toml for crates.io crate holochain_tracing_macros 0.0.24 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 prometheus v0.7.0
[INFO] [stderr]   Downloaded protobuf v2.18.1
[INFO] [stderr]   Downloaded integer-encoding v1.1.5
[INFO] [stderr]   Downloaded opentelemetry v0.2.0
[INFO] [stderr]   Downloaded shrinkwraprs v0.3.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.3.8
[INFO] [stderr]   Downloaded tracing-serde v0.1.1
[INFO] [stderr]   Downloaded opentelemetry-jaeger v0.1.0
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded sharded-slab v0.0.8
[INFO] [stderr]   Downloaded tracing v0.1.13
[INFO] [stderr]   Downloaded tracing-core v0.1.10
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.3
[INFO] [stderr]   Downloaded thrift v0.13.0
[INFO] [stderr]   Downloaded thrift_codec v0.1.1
[INFO] [stderr]   Downloaded rustracing v0.2.1
[INFO] [stderr]   Downloaded newrelic v0.2.2
[INFO] [stderr]   Downloaded holochain_tracing v0.0.24
[INFO] [stderr]   Downloaded rustracing_jaeger v0.2.1
[INFO] [stderr]   Downloaded newrelic-sys v0.2.0
[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] 30338a0c3c3c955e04f012b3983b5d622dfe3db29cda65ad191aac7e25812b02
[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" "30338a0c3c3c955e04f012b3983b5d622dfe3db29cda65ad191aac7e25812b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30338a0c3c3c955e04f012b3983b5d622dfe3db29cda65ad191aac7e25812b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30338a0c3c3c955e04f012b3983b5d622dfe3db29cda65ad191aac7e25812b02", kill_on_drop: false }`
[INFO] [stdout] 30338a0c3c3c955e04f012b3983b5d622dfe3db29cda65ad191aac7e25812b02
[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] 6c702dafdf4274ed80cfe3dfeb2f0b3726bf45b7e4d4ca13d64e935a47b65cd8
[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" "6c702dafdf4274ed80cfe3dfeb2f0b3726bf45b7e4d4ca13d64e935a47b65cd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling protobuf v2.18.1
[INFO] [stderr]    Compiling integer-encoding v1.1.5
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling sharded-slab v0.0.8
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling thrift v0.13.0
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling prometheus v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling shrinkwraprs v0.3.0
[INFO] [stderr]    Compiling trackable v0.2.23
[INFO] [stderr]    Compiling rustracing v0.2.1
[INFO] [stderr]    Compiling thrift_codec v0.1.1
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling rustracing_jaeger v0.2.1
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling serde_json v1.0.47
[INFO] [stderr]    Compiling tracing-serde v0.1.1
[INFO] [stderr]    Compiling opentelemetry v0.2.0
[INFO] [stderr]    Compiling tracing-subscriber v0.2.3
[INFO] [stderr]    Compiling opentelemetry-jaeger v0.1.0
[INFO] [stderr]    Compiling holochain_tracing v0.0.24
[INFO] [stderr]    Compiling holochain_tracing_macros v0.0.24 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `holochain_tracing_macros`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6c702dafdf4274ed80cfe3dfeb2f0b3726bf45b7e4d4ca13d64e935a47b65cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c702dafdf4274ed80cfe3dfeb2f0b3726bf45b7e4d4ca13d64e935a47b65cd8", kill_on_drop: false }`
[INFO] [stdout] 6c702dafdf4274ed80cfe3dfeb2f0b3726bf45b7e4d4ca13d64e935a47b65cd8