[INFO] fetching crate merk 1.0.0...
[INFO] documenting merk-1.0.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate merk 1.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate merk 1.0.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merk 1.0.0
[INFO] finished tweaking crates.io crate merk 1.0.0
[INFO] tweaked toml for crates.io crate merk 1.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89506abd38a0c776c1bb2b365b483b61c2bbb8a26969f1549affc3b84dc4deb4
[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" "89506abd38a0c776c1bb2b365b483b61c2bbb8a26969f1549affc3b84dc4deb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89506abd38a0c776c1bb2b365b483b61c2bbb8a26969f1549affc3b84dc4deb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89506abd38a0c776c1bb2b365b483b61c2bbb8a26969f1549affc3b84dc4deb4", kill_on_drop: false }`
[INFO] [stdout] 89506abd38a0c776c1bb2b365b483b61c2bbb8a26969f1549affc3b84dc4deb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3530f6a89b1a183179ec4e267c52cba791e5ba36d0db3cd99a81bbf43a29363b
[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" "3530f6a89b1a183179ec4e267c52cba791e5ba36d0db3cd99a81bbf43a29363b", kill_on_drop: false }`
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling librocksdb-sys v6.11.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/blake2-rfc-0.2.18/src/lib.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "simd", feature(platform_intrinsics, repr_simd))]
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/blake2-rfc-0.2.18/src/lib.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![cfg_attr(feature = "simd_opt", feature(cfg_target_feature))]
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/blake2-rfc-0.2.18/src/lib.rs:21:35
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![cfg_attr(feature = "simd_asm", feature(asm))]
[INFO] [stdout]    |                                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blake2-rfc`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3530f6a89b1a183179ec4e267c52cba791e5ba36d0db3cd99a81bbf43a29363b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3530f6a89b1a183179ec4e267c52cba791e5ba36d0db3cd99a81bbf43a29363b", kill_on_drop: false }`
[INFO] [stdout] 3530f6a89b1a183179ec4e267c52cba791e5ba36d0db3cd99a81bbf43a29363b
