[INFO] fetching crate dyn-lock 0.1.0...
[INFO] documenting dyn-lock-0.1.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate dyn-lock 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate dyn-lock 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain
[INFO] started tweaking crates.io crate dyn-lock 0.1.0
[INFO] finished tweaking crates.io crate dyn-lock 0.1.0
[INFO] tweaked toml for crates.io crate dyn-lock 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded includedir v0.6.0
[INFO] [stderr]   Downloaded ckb-standalone-types v0.0.1-pre.1
[INFO] [stderr]   Downloaded molecule v0.6.1
[INFO] [stderr]   Downloaded blake2b-rs v0.2.0
[INFO] [stderr]   Downloaded buddy-alloc v0.4.1
[INFO] [stderr]   Downloaded includedir_codegen v0.6.0
[INFO] [stderr]   Downloaded ckb-std v0.7.4
[INFO] [stderr]   Downloaded faster-hex v0.4.1
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bfc1bead95a3a9e48322852f00145a1efb26e9f6abb8a646673ed5d9dc8d09cb
[INFO] running `Command { std: "docker" "start" "-a" "bfc1bead95a3a9e48322852f00145a1efb26e9f6abb8a646673ed5d9dc8d09cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfc1bead95a3a9e48322852f00145a1efb26e9f6abb8a646673ed5d9dc8d09cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfc1bead95a3a9e48322852f00145a1efb26e9f6abb8a646673ed5d9dc8d09cb", kill_on_drop: false }`
[INFO] [stdout] bfc1bead95a3a9e48322852f00145a1efb26e9f6abb8a646673ed5d9dc8d09cb
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 900b17303a3a14c03edd6f0a1b010c7fa51e6e0b1c7174f2b457c57c726e2dcc
[INFO] running `Command { std: "docker" "start" "-a" "900b17303a3a14c03edd6f0a1b010c7fa51e6e0b1c7174f2b457c57c726e2dcc", kill_on_drop: false }`
[INFO] [stderr]    Compiling dyn-lock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking buddy-alloc v0.4.1
[INFO] [stderr]     Checking molecule v0.6.1
[INFO] [stderr]    Compiling ckb-std v0.7.4
[INFO] [stderr]     Checking ckb-standalone-types v0.0.1-pre.1
[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/ckb-std-0.7.4/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(llvm_asm)]
[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 `ckb-std` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "900b17303a3a14c03edd6f0a1b010c7fa51e6e0b1c7174f2b457c57c726e2dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900b17303a3a14c03edd6f0a1b010c7fa51e6e0b1c7174f2b457c57c726e2dcc", kill_on_drop: false }`
[INFO] [stdout] 900b17303a3a14c03edd6f0a1b010c7fa51e6e0b1c7174f2b457c57c726e2dcc
