[INFO] fetching crate oasis-types 0.4.0...
[INFO] documenting oasis-types-0.4.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate oasis-types 0.4.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate oasis-types 0.4.0 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] started tweaking crates.io crate oasis-types 0.4.0
[INFO] finished tweaking crates.io crate oasis-types 0.4.0
[INFO] tweaked toml for crates.io crate oasis-types 0.4.0 written to /workspace/builds/worker-18/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] e952796f7e68b4587785035633d37fd0fe3e049b12dc888d012ca5d37d93053c
[INFO] running `Command { std: "docker" "start" "-a" "e952796f7e68b4587785035633d37fd0fe3e049b12dc888d012ca5d37d93053c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e952796f7e68b4587785035633d37fd0fe3e049b12dc888d012ca5d37d93053c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e952796f7e68b4587785035633d37fd0fe3e049b12dc888d012ca5d37d93053c", kill_on_drop: false }`
[INFO] [stdout] e952796f7e68b4587785035633d37fd0fe3e049b12dc888d012ca5d37d93053c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] 8b94a2da27caebe9ab7be4787032efd58aef637e15d3eaabb9d99dd643b77189
[INFO] running `Command { std: "docker" "start" "-a" "8b94a2da27caebe9ab7be4787032efd58aef637e15d3eaabb9d99dd643b77189", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling oasis-borsh-derive-internal v0.2.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling oasis-borsh-derive v0.2.10
[INFO] [stderr]     Checking oasis-borsh v0.2.12
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]  Documenting oasis-types v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(non_exhaustive)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 document `oasis-types`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name oasis_types src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=976ac13df9935ced -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-0657bc08aa8032ee.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-3b4787cc1def25b2.so --extern hex=/opt/rustwide/target/debug/deps/libhex-e363d6a41d9ffc70.rmeta --extern oasis_borsh=/opt/rustwide/target/debug/deps/liboasis_borsh-162d8b701b4b234c.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-78495a19a094a491.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8b94a2da27caebe9ab7be4787032efd58aef637e15d3eaabb9d99dd643b77189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b94a2da27caebe9ab7be4787032efd58aef637e15d3eaabb9d99dd643b77189", kill_on_drop: false }`
[INFO] [stdout] 8b94a2da27caebe9ab7be4787032efd58aef637e15d3eaabb9d99dd643b77189