[INFO] fetching crate dep-obj 0.17.0...
[INFO] documenting dep-obj-0.17.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate dep-obj 0.17.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate dep-obj 0.17.0 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] started tweaking crates.io crate dep-obj 0.17.0
[INFO] finished tweaking crates.io crate dep-obj 0.17.0
[INFO] tweaked toml for crates.io crate dep-obj 0.17.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate dep-obj 0.17.0 already has a lockfile, it will not be regenerated
[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 downcast-rs v1.2.0
[INFO] [stderr]   Downloaded educe v0.4.18
[INFO] [stderr]   Downloaded enum-ordinalize v3.1.10
[INFO] [stderr]   Downloaded phantom-type v0.3.1
[INFO] [stderr]   Downloaded generics v0.3.1
[INFO] [stderr]   Downloaded newtype-derive-2018 v0.0.3
[INFO] [stderr]   Downloaded components-arena v1.3.1
[INFO] [stderr]   Downloaded macro-attr-2018 v1.1.1
[INFO] [stderr]   Downloaded dyn-context v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 141bd95648035545f7ba93f173134c67746d7b3612713facafed75a7c486ff97
[INFO] running `Command { std: "docker" "start" "-a" "141bd95648035545f7ba93f173134c67746d7b3612713facafed75a7c486ff97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141bd95648035545f7ba93f173134c67746d7b3612713facafed75a7c486ff97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141bd95648035545f7ba93f173134c67746d7b3612713facafed75a7c486ff97", kill_on_drop: false }`
[INFO] [stdout] 141bd95648035545f7ba93f173134c67746d7b3612713facafed75a7c486ff97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 3124857d3bdd1e3f458d63c785db0a54f84f1db0465cccb8f8f35ac4f328b293
[INFO] running `Command { std: "docker" "start" "-a" "3124857d3bdd1e3f458d63c785db0a54f84f1db0465cccb8f8f35ac4f328b293", kill_on_drop: false }`
[INFO] [stderr]     Checking generics v0.3.1
[INFO] [stderr]     Checking macro-attr-2018 v1.1.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling enum-ordinalize v3.1.10
[INFO] [stderr]     Checking newtype-derive-2018 v0.0.3
[INFO] [stderr]     Checking dyn-context v0.7.0
[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/dyn-context-0.7.0/src/lib.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature="nightly", feature(never_type))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/dyn-context-0.7.0/src/lib.rs:7:32
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(feature="nightly", feature(thread_local))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^
[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 compile `dyn-context` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3124857d3bdd1e3f458d63c785db0a54f84f1db0465cccb8f8f35ac4f328b293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3124857d3bdd1e3f458d63c785db0a54f84f1db0465cccb8f8f35ac4f328b293", kill_on_drop: false }`
[INFO] [stdout] 3124857d3bdd1e3f458d63c785db0a54f84f1db0465cccb8f8f35ac4f328b293
