[INFO] crate merk 1.0.0-alpha.5 is already in cache
[INFO] checking merk-1.0.0-alpha.5 against beta-2019-10-27 for pr-65897
[INFO] extracting crate merk 1.0.0-alpha.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate merk 1.0.0-alpha.5 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 merk 1.0.0-alpha.5
[INFO] finished tweaking crates.io crate merk 1.0.0-alpha.5
[INFO] tweaked toml for crates.io crate merk 1.0.0-alpha.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "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" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 8e2de7d565b271c2932208168cc26ba6fa47ca742fd8a0f92e28d0ad98726595
[INFO] running `"docker" "start" "-a" "8e2de7d565b271c2932208168cc26ba6fa47ca742fd8a0f92e28d0ad98726595"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[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/blake2-rfc-0.2.18/src/lib.rs:19:31
[INFO] [stderr]    |
[INFO] [stderr] 19 | #![cfg_attr(feature = "simd", feature(platform_intrinsics, repr_simd))]
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/blake2-rfc-0.2.18/src/lib.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![cfg_attr(feature = "simd_opt", feature(cfg_target_feature))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/blake2-rfc-0.2.18/src/lib.rs:21:35
[INFO] [stderr]    |
[INFO] [stderr] 21 | #![cfg_attr(feature = "simd_asm", feature(asm))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `blake2-rfc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8e2de7d565b271c2932208168cc26ba6fa47ca742fd8a0f92e28d0ad98726595"`
[INFO] running `"docker" "rm" "-f" "8e2de7d565b271c2932208168cc26ba6fa47ca742fd8a0f92e28d0ad98726595"`
[INFO] [stdout] 8e2de7d565b271c2932208168cc26ba6fa47ca742fd8a0f92e28d0ad98726595