[INFO] fetching crate cargo_meta 0.1.4...
[INFO] documenting cargo_meta-0.1.4 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate cargo_meta 0.1.4 into /workspace/builds/worker-96/source
[INFO] validating manifest of crates.io crate cargo_meta 0.1.4 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 cargo_meta 0.1.4
[INFO] finished tweaking crates.io crate cargo_meta 0.1.4
[INFO] tweaked toml for crates.io crate cargo_meta 0.1.4 written to /workspace/builds/worker-96/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] [stderr]     Blocking waiting for file lock on package cache
[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-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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] 58543e90a5c13c93229b1c990f556eafd88002e5fe29c4992bdcd686d787a540
[INFO] running `Command { std: "docker" "start" "-a" "58543e90a5c13c93229b1c990f556eafd88002e5fe29c4992bdcd686d787a540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58543e90a5c13c93229b1c990f556eafd88002e5fe29c4992bdcd686d787a540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58543e90a5c13c93229b1c990f556eafd88002e5fe29c4992bdcd686d787a540", kill_on_drop: false }`
[INFO] [stdout] 58543e90a5c13c93229b1c990f556eafd88002e5fe29c4992bdcd686d787a540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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] 6706a396c1a6e95ccf7dca56109e06f18e0587c14efb45a209d4e4176fc26586
[INFO] running `Command { std: "docker" "start" "-a" "6706a396c1a6e95ccf7dca56109e06f18e0587c14efb45a209d4e4176fc26586", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling cargo_meta_proc v0.1.4
[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/cargo_meta_proc-0.1.4/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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 `cargo_meta_proc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6706a396c1a6e95ccf7dca56109e06f18e0587c14efb45a209d4e4176fc26586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6706a396c1a6e95ccf7dca56109e06f18e0587c14efb45a209d4e4176fc26586", kill_on_drop: false }`
[INFO] [stdout] 6706a396c1a6e95ccf7dca56109e06f18e0587c14efb45a209d4e4176fc26586