[INFO] fetching crate opencontainers 0.0.0-alpha.2...
[INFO] documenting opencontainers-0.0.0-alpha.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate opencontainers 0.0.0-alpha.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate opencontainers 0.0.0-alpha.2 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] started tweaking crates.io crate opencontainers 0.0.0-alpha.2
[INFO] finished tweaking crates.io crate opencontainers 0.0.0-alpha.2
[INFO] tweaked toml for crates.io crate opencontainers 0.0.0-alpha.2 written to /workspace/builds/worker-1/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]  Downloading crates ...
[INFO] [stderr]   Downloaded ttl_cache v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] 849af5616bbfff23f752aea38ec0f0e762edbec0b4ffb2a158e03b068074acc7
[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" "849af5616bbfff23f752aea38ec0f0e762edbec0b4ffb2a158e03b068074acc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "849af5616bbfff23f752aea38ec0f0e762edbec0b4ffb2a158e03b068074acc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849af5616bbfff23f752aea38ec0f0e762edbec0b4ffb2a158e03b068074acc7", kill_on_drop: false }`
[INFO] [stdout] 849af5616bbfff23f752aea38ec0f0e762edbec0b4ffb2a158e03b068074acc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] a3a5438b4e39cf41a731dfc8c225ea9302423d1c53cc978c0f1477aecae0a867
[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" "a3a5438b4e39cf41a731dfc8c225ea9302423d1c53cc978c0f1477aecae0a867", kill_on_drop: false }`
[INFO] [stderr]     Checking ttl_cache v0.5.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking hyperx v0.13.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking www-authenticate v0.3.0
[INFO] [stderr]     Checking hyper v0.12.36
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]  Documenting opencontainers v0.0.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `opencontainers`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name opencontainers src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-c6620762eb914d6f.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-39821cd9ab0074a0.rmeta --extern hyperx=/opt/rustwide/target/debug/deps/libhyperx-74a8f2e2364f7f5c.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-56a705720bafac8d.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-58dd7eca9aaa394a.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-e03ac34dd53e39c3.so --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-87f98de23f8ed7a9.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-282f52a09d9f3f9a.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-2799fcdcc706ff71.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b37c752db52a1bb2.rmeta --extern ttl_cache=/opt/rustwide/target/debug/deps/libttl_cache-66023b1a8cc14e0e.rmeta --extern www_authenticate=/opt/rustwide/target/debug/deps/libwww_authenticate-ac004c7ca491794f.rmeta --cap-lints=warn --crate-version 0.0.0-alpha.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a3a5438b4e39cf41a731dfc8c225ea9302423d1c53cc978c0f1477aecae0a867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a5438b4e39cf41a731dfc8c225ea9302423d1c53cc978c0f1477aecae0a867", kill_on_drop: false }`
[INFO] [stdout] a3a5438b4e39cf41a731dfc8c225ea9302423d1c53cc978c0f1477aecae0a867
