[INFO] fetching crate rttrust 0.1.1...
[INFO] documenting rttrust-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rttrust 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rttrust 0.1.1 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 crates.io crate rttrust 0.1.1
[INFO] finished tweaking crates.io crate rttrust 0.1.1
[INFO] tweaked toml for crates.io crate rttrust 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 genio v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] e6fef0ed62f51d48a93c712a8b6ebdf972782982d4b214c2566c3fb04b9aabf9
[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" "e6fef0ed62f51d48a93c712a8b6ebdf972782982d4b214c2566c3fb04b9aabf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6fef0ed62f51d48a93c712a8b6ebdf972782982d4b214c2566c3fb04b9aabf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fef0ed62f51d48a93c712a8b6ebdf972782982d4b214c2566c3fb04b9aabf9", kill_on_drop: false }`
[INFO] [stdout] e6fef0ed62f51d48a93c712a8b6ebdf972782982d4b214c2566c3fb04b9aabf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] a11eeebd6383a8f8fe1f4a8d54d13da591fd4f015681eaa5aa7985fbc0884ab2
[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" "a11eeebd6383a8f8fe1f4a8d54d13da591fd4f015681eaa5aa7985fbc0884ab2", kill_on_drop: false }`
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]     Checking genio v0.2.1
[INFO] [stderr]    Compiling simple_logger v1.9.0
[INFO] [stderr]    Compiling rttrust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `simple_logger::init_by_env`: Please use the Builder pattern instead.
[INFO] [stdout]   --> build.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     simple_logger::init_by_env();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting rttrust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(clamp)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(alloc_error_handler)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `rttrust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type staticlib --crate-type rlib --crate-name rttrust src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="genio"' --cfg 'feature="io"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-a6825db7c055f5f9.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-9b1fea99c3377c26.rmeta --extern cty=/opt/rustwide/target/debug/deps/libcty-ff1833972b30347a.rmeta --extern genio=/opt/rustwide/target/debug/deps/libgenio-8b535e62d4b66e65.rmeta --cap-lints=warn --crate-version 0.1.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a11eeebd6383a8f8fe1f4a8d54d13da591fd4f015681eaa5aa7985fbc0884ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a11eeebd6383a8f8fe1f4a8d54d13da591fd4f015681eaa5aa7985fbc0884ab2", kill_on_drop: false }`
[INFO] [stdout] a11eeebd6383a8f8fe1f4a8d54d13da591fd4f015681eaa5aa7985fbc0884ab2