[INFO] fetching crate kg-display-derive 0.1.1...
[INFO] documenting kg-display-derive-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate kg-display-derive 0.1.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate kg-display-derive 0.1.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kg-display-derive 0.1.1
[INFO] finished tweaking crates.io crate kg-display-derive 0.1.1
[INFO] tweaked toml for crates.io crate kg-display-derive 0.1.1 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a07e97e7b3ef2c329c606bb8e1cf03a0abb102412b5205b9d6c3a31454252f2
[INFO] running `Command { std: "docker" "start" "-a" "5a07e97e7b3ef2c329c606bb8e1cf03a0abb102412b5205b9d6c3a31454252f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a07e97e7b3ef2c329c606bb8e1cf03a0abb102412b5205b9d6c3a31454252f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a07e97e7b3ef2c329c606bb8e1cf03a0abb102412b5205b9d6c3a31454252f2", kill_on_drop: false }`
[INFO] [stdout] 5a07e97e7b3ef2c329c606bb8e1cf03a0abb102412b5205b9d6c3a31454252f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd03b957cc346cd604ad1087edbf8d8b00e0ec427a64a3bc6dfd0716f63d96b1
[INFO] running `Command { std: "docker" "start" "-a" "dd03b957cc346cd604ad1087edbf8d8b00e0ec427a64a3bc6dfd0716f63d96b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking kg-display v0.1.2
[INFO] [stderr]     Checking kg-utils v0.2.4
[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/kg-utils-0.2.4/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api, alloc_layout_extra, test)]
[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/kg-utils-0.2.4/src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api, alloc_layout_extra, test)]
[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/kg-utils-0.2.4/src/lib.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api, alloc_layout_extra, test)]
[INFO] [stdout]   |                                               ^^^^
[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 compile `kg-utils` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dd03b957cc346cd604ad1087edbf8d8b00e0ec427a64a3bc6dfd0716f63d96b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd03b957cc346cd604ad1087edbf8d8b00e0ec427a64a3bc6dfd0716f63d96b1", kill_on_drop: false }`
[INFO] [stdout] dd03b957cc346cd604ad1087edbf8d8b00e0ec427a64a3bc6dfd0716f63d96b1