[INFO] cloning repository https://github.com/tikue/search_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tikue/search_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Fsearch_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Fsearch_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cecf5433a4e726f34249d846009740621e3ab71
[INFO] documenting tikue/search_engine against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Fsearch_engine" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tikue/search_engine 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 git repo https://github.com/tikue/search_engine
[INFO] finished tweaking git repo https://github.com/tikue/search_engine
[INFO] tweaked toml for git repo https://github.com/tikue/search_engine written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/tikue/search_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tikue/inverted_index.git`
[INFO] [stderr]     Updating git repository `https://github.com/Manishearth/rust-clippy`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/tikue/inverted_index.git`
[INFO] [stderr]     Updating git repository `https://github.com/Manishearth/rust-clippy`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded route-recognizer v0.1.13
[INFO] [stderr]   Downloaded cargo_metadata v0.7.4
[INFO] [stderr]   Downloaded sequence_trie v0.3.6
[INFO] [stderr]   Downloaded pulldown-cmark v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] e051d4539ca72be9309cd8f6e5c3033505435ca93d2d44348060bf3f5fc8450f
[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" "e051d4539ca72be9309cd8f6e5c3033505435ca93d2d44348060bf3f5fc8450f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e051d4539ca72be9309cd8f6e5c3033505435ca93d2d44348060bf3f5fc8450f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e051d4539ca72be9309cd8f6e5c3033505435ca93d2d44348060bf3f5fc8450f", kill_on_drop: false }`
[INFO] [stdout] e051d4539ca72be9309cd8f6e5c3033505435ca93d2d44348060bf3f5fc8450f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 505cac6d8443df30d2835aadaf08e72a6e16ddd67662f5447d199727fa5eddbe
[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" "505cac6d8443df30d2835aadaf08e72a6e16ddd67662f5447d199727fa5eddbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling object v0.21.1
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling rustc_tools_util v0.1.1 (https://github.com/Manishearth/rust-clippy#3710ec59)
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]    Compiling quine-mc_cluskey v0.2.4
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking route-recognizer v0.1.13
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[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/smallvec-0.6.13/lib.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "union", feature(untagged_unions))]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling clippy v0.0.212 (https://github.com/Manishearth/rust-clippy#3710ec59)
[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 `smallvec`
[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" "505cac6d8443df30d2835aadaf08e72a6e16ddd67662f5447d199727fa5eddbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505cac6d8443df30d2835aadaf08e72a6e16ddd67662f5447d199727fa5eddbe", kill_on_drop: false }`
[INFO] [stdout] 505cac6d8443df30d2835aadaf08e72a6e16ddd67662f5447d199727fa5eddbe
