[INFO] crate lib3h 0.0.19 is already in cache
[INFO] checking lib3h-0.0.19 against try#8810c24b0958114d8dbb32d878444e8956fce80f for pr-66063
[INFO] extracting crate lib3h 0.0.19 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lib3h 0.0.19 on toolchain 8810c24b0958114d8dbb32d878444e8956fce80f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lib3h 0.0.19
[INFO] finished tweaking crates.io crate lib3h 0.0.19
[INFO] tweaked toml for crates.io crate lib3h 0.0.19 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate lib3h 0.0.19 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8810c24b0958114d8dbb32d878444e8956fce80f" "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] d2d779d7c6acb663756404e42b1110a2569e8e5430a58ac3d959627bcd143f3e
[INFO] running `"docker" "start" "-a" "d2d779d7c6acb663756404e42b1110a2569e8e5430a58ac3d959627bcd143f3e"`
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling indexmap v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.3.3
[INFO] [stderr]    Compiling hexf-parse v0.1.0
[INFO] [stderr]     Checking unwrap_to v0.1.0
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]    Compiling backtrace v0.3.27
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling openssl-sys v0.9.51
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling miniz_oxide v0.3.3
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking rmp v0.8.8
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking xoroshiro128 v0.3.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling proc-macro-hack v0.3.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling flate2 v1.0.12
[INFO] [stderr]    Compiling hexf-impl v0.1.0
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling zip v0.3.3
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking hexf v0.1.0
[INFO] [stderr]     Checking rustracing v0.2.0
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking rust-base58 v0.0.4
[INFO] [stderr]     Checking rustracing_jaeger v0.2.1
[INFO] [stderr]     Checking tempfile v3.1.0
[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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d2d779d7c6acb663756404e42b1110a2569e8e5430a58ac3d959627bcd143f3e"`
[INFO] running `"docker" "rm" "-f" "d2d779d7c6acb663756404e42b1110a2569e8e5430a58ac3d959627bcd143f3e"`
[INFO] [stdout] d2d779d7c6acb663756404e42b1110a2569e8e5430a58ac3d959627bcd143f3e