[INFO] cloning repository https://github.com/dyxushuai/mum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dyxushuai/mum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9eb1c3fd1d1b029bd62f78f5bd51171d5126190b
[INFO] documenting dyxushuai/mum against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dyxushuai/mum on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dyxushuai/mum
[INFO] finished tweaking git repo https://github.com/dyxushuai/mum
[INFO] tweaked toml for git repo https://github.com/dyxushuai/mum written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/dyxushuai/mum already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/pingcap/raft-rs.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded procinfo v0.3.1
[INFO] [stderr]   Downloaded bincode v1.0.0
[INFO] [stderr]   Downloaded protobuf v1.7.3
[INFO] [stderr]   Downloaded spin v0.4.8
[INFO] [stderr]   Downloaded cmake v0.1.31
[INFO] [stderr]   Downloaded protoc-rust v2.0.2
[INFO] [stderr]   Downloaded protobuf-codegen v2.0.2
[INFO] [stderr]   Downloaded prometheus v0.4.1
[INFO] [stderr]   Downloaded protoc v2.0.2
[INFO] [stderr]   Downloaded protoc-grpc v0.0.0
[INFO] [stderr]   Downloaded grpcio-sys v0.2.3
[INFO] [stderr]   Downloaded grpcio v0.3.0
[INFO] [stderr]   Downloaded grpcio-compiler v0.3.0
[INFO] [stderr]   Downloaded protobuf v2.0.2
[INFO] running `Command { std: "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" "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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e71143cee8cb2603fb491fc43c40d128c473443f749ab5d807b604fe540319d2
[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" "e71143cee8cb2603fb491fc43c40d128c473443f749ab5d807b604fe540319d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e71143cee8cb2603fb491fc43c40d128c473443f749ab5d807b604fe540319d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e71143cee8cb2603fb491fc43c40d128c473443f749ab5d807b604fe540319d2", kill_on_drop: false }`
[INFO] [stdout] e71143cee8cb2603fb491fc43c40d128c473443f749ab5d807b604fe540319d2
[INFO] running `Command { std: "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" "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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee4478d0d6253782933fb35e6f8661b146099e9469c52496320a0c3c2f1b17b1
[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" "ee4478d0d6253782933fb35e6f8661b146099e9469c52496320a0c3c2f1b17b1", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling protobuf v2.0.2
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling protobuf v1.7.3
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking spin v0.4.8
[INFO] [stderr]     Checking quick-error v0.2.2
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/util.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]   |              ----^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |              |
[INFO] [stdout]   |              help: replace with: `llvm_asm!`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]   = note: alternatively, switch to llvm_asm! to keep your code working as it is
[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/spin-0.4.8/src/lib.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "asm", feature(asm))]
[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/spin-0.4.8/src/lib.rs:7:42
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(feature = "core_intrinsics", feature(core_intrinsics))]
[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/spin-0.4.8/src/lib.rs:8:35
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr] error: could not compile `spin`.
[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" "ee4478d0d6253782933fb35e6f8661b146099e9469c52496320a0c3c2f1b17b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee4478d0d6253782933fb35e6f8661b146099e9469c52496320a0c3c2f1b17b1", kill_on_drop: false }`
[INFO] [stdout] ee4478d0d6253782933fb35e6f8661b146099e9469c52496320a0c3c2f1b17b1