[INFO] cloning repository https://github.com/kkspeed/imdb-top1000
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kkspeed/imdb-top1000" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fimdb-top1000", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fimdb-top1000'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc583a53bc7a0d9ac1e2b5dea827a1222353ab2f
[INFO] documenting kkspeed/imdb-top1000 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%2Fkkspeed%2Fimdb-top1000" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kkspeed/imdb-top1000 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/kkspeed/imdb-top1000
[INFO] finished tweaking git repo https://github.com/kkspeed/imdb-top1000
[INFO] tweaked toml for git repo https://github.com/kkspeed/imdb-top1000 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/kkspeed/imdb-top1000 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]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded serde_derive_internals v0.22.2
[INFO] [stderr]   Downloaded markup5ever v0.3.2
[INFO] [stderr]   Downloaded pear_codegen v0.0.12
[INFO] [stderr]   Downloaded utf-8 v0.7.2
[INFO] [stderr]   Downloaded select v0.4.2
[INFO] [stderr]   Downloaded tokio v0.1.4
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.1
[INFO] [stderr]   Downloaded bit-set v0.4.0
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.0
[INFO] [stderr]   Downloaded serde_json v1.0.13
[INFO] [stderr]   Downloaded pear v0.0.12
[INFO] [stderr]   Downloaded rocket v0.3.6
[INFO] [stderr]   Downloaded html5ever v0.18.0
[INFO] [stderr]   Downloaded futf v0.1.3
[INFO] [stderr]   Downloaded crc v1.7.0
[INFO] [stderr]   Downloaded byteorder v1.2.1
[INFO] [stderr]   Downloaded state v0.3.3
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded libflate v0.1.14
[INFO] [stderr]   Downloaded reqwest v0.8.5
[INFO] [stderr]   Downloaded futures v0.1.20
[INFO] [stderr]   Downloaded openssl-sys v0.9.27
[INFO] [stderr]   Downloaded rocket_codegen v0.3.6
[INFO] [stderr]   Downloaded serde_derive v1.0.36
[INFO] [stderr]   Downloaded hyper v0.11.24
[INFO] [stderr]   Downloaded mime_guess v2.0.0-alpha.4
[INFO] [stderr]   Downloaded hyper-tls v0.1.3
[INFO] [stderr]   Downloaded encoding_rs v0.7.2
[INFO] [stderr]   Downloaded schannel v0.1.11
[INFO] [stderr]   Downloaded serde v1.0.36
[INFO] [stderr]   Downloaded tendril v0.3.1
[INFO] [stderr]   Downloaded tokio-executor v0.1.1
[INFO] [stderr]   Downloaded remove_dir_all v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7f179c83cba49dd950c27ae6189ad5e536c8869a050652e834ab9acb794c4e9d
[INFO] running `Command { std: "docker" "start" "-a" "7f179c83cba49dd950c27ae6189ad5e536c8869a050652e834ab9acb794c4e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f179c83cba49dd950c27ae6189ad5e536c8869a050652e834ab9acb794c4e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f179c83cba49dd950c27ae6189ad5e536c8869a050652e834ab9acb794c4e9d", kill_on_drop: false }`
[INFO] [stdout] 7f179c83cba49dd950c27ae6189ad5e536c8869a050652e834ab9acb794c4e9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d550ade9da157320e25e8dc8dd9a7f31ebda323b838d2a4928e4aea1f3c72e04
[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" "d550ade9da157320e25e8dc8dd9a7f31ebda323b838d2a4928e4aea1f3c72e04", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]     Checking futures v0.1.20
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]     Checking serde v1.0.36
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]     Checking utf-8 v0.7.2
[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/yansi-0.3.4/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling pear v0.0.12
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yansi`.
[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" "d550ade9da157320e25e8dc8dd9a7f31ebda323b838d2a4928e4aea1f3c72e04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d550ade9da157320e25e8dc8dd9a7f31ebda323b838d2a4928e4aea1f3c72e04", kill_on_drop: false }`
[INFO] [stdout] d550ade9da157320e25e8dc8dd9a7f31ebda323b838d2a4928e4aea1f3c72e04