[INFO] fetching crate vex-rt 0.11.0...
[INFO] documenting vex-rt-0.11.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate vex-rt 0.11.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate vex-rt 0.11.0 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] removed /workspace/builds/worker-23/source/.cargo/config
[INFO] removed /workspace/builds/worker-23/source/rust-toolchain
[INFO] started tweaking crates.io crate vex-rt 0.11.0
[INFO] finished tweaking crates.io crate vex-rt 0.11.0
[INFO] tweaked toml for crates.io crate vex-rt 0.11.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate crates.io crate vex-rt 0.11.0 already has a lockfile, it will not be regenerated
[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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 14e58430a11b7130cad7a8ae0b8c8f4f0fab6f0e90a4c39470064e3b0f6cb92b
[INFO] running `Command { std: "docker" "start" "-a" "14e58430a11b7130cad7a8ae0b8c8f4f0fab6f0e90a4c39470064e3b0f6cb92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e58430a11b7130cad7a8ae0b8c8f4f0fab6f0e90a4c39470064e3b0f6cb92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e58430a11b7130cad7a8ae0b8c8f4f0fab6f0e90a4c39470064e3b0f6cb92b", kill_on_drop: false }`
[INFO] [stdout] 14e58430a11b7130cad7a8ae0b8c8f4f0fab6f0e90a4c39470064e3b0f6cb92b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] dd5066d1432a42f58d34482c1927f617b75b52ce9405f173ea5e4175c92edd19
[INFO] running `Command { std: "docker" "start" "-a" "dd5066d1432a42f58d34482c1927f617b75b52ce9405f173ea5e4175c92edd19", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling once_cell v1.7.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v1.0.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking owner-monad v0.1.0
[INFO] [stderr]     Checking rcstring v0.2.1
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking raii-map v0.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]     Checking spin v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking cstring-interop v0.1.0
[INFO] [stderr]     Checking libc-print v0.1.16
[INFO] [stderr]     Checking newlib-alloc v0.1.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]     Checking safe-modular-arithmetic v0.2.4
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]     Checking queue-model v0.1.2
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling zip v0.5.10
[INFO] [stderr]    Compiling zip-extensions v0.6.0
[INFO] [stderr]    Compiling vex-rt v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting vex-rt v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(alloc_error_handler)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(negative_impls)]
[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:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(unsafe_cell_raw_get)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `vex-rt`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name vex_rt src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6f4c5852f7252eac -L dependency=/opt/rustwide/target/debug/deps --extern by_address=/opt/rustwide/target/debug/deps/libby_address-d1ff10f7ddde2f10.rmeta --extern cstring_interop=/opt/rustwide/target/debug/deps/libcstring_interop-204b561434b05684.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-ad2dd5890e1f6470.rmeta --extern libc_print=/opt/rustwide/target/debug/deps/liblibc_print-9808e1f521a2b18d.rmeta --extern newlib_alloc=/opt/rustwide/target/debug/deps/libnewlib_alloc-3257b4f349d4502c.rmeta --extern owner_monad=/opt/rustwide/target/debug/deps/libowner_monad-ded863b34de8d0d2.rmeta --extern queue_model=/opt/rustwide/target/debug/deps/libqueue_model-8bf04e88052475ac.rmeta --extern raii_map=/opt/rustwide/target/debug/deps/libraii_map-46423f4c9006ee77.rmeta --extern rcstring=/opt/rustwide/target/debug/deps/librcstring-1602bb231111ea6a.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-0e8ac383a83bc007.rmeta --cap-lints=warn --crate-version 0.11.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "dd5066d1432a42f58d34482c1927f617b75b52ce9405f173ea5e4175c92edd19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd5066d1432a42f58d34482c1927f617b75b52ce9405f173ea5e4175c92edd19", kill_on_drop: false }`
[INFO] [stdout] dd5066d1432a42f58d34482c1927f617b75b52ce9405f173ea5e4175c92edd19