[INFO] fetching crate fix-rat 0.1.1...
[INFO] documenting fix-rat-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate fix-rat 0.1.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate fix-rat 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 fix-rat 0.1.1
[INFO] finished tweaking crates.io crate fix-rat 0.1.1
[INFO] tweaked toml for crates.io crate fix-rat 0.1.1 written to /workspace/builds/worker-49/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-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] e807ec5a4fbd8d54ee0fb9bb6dfdf5f3ecd7a4548309ea597af6910306e93f40
[INFO] running `Command { std: "docker" "start" "-a" "e807ec5a4fbd8d54ee0fb9bb6dfdf5f3ecd7a4548309ea597af6910306e93f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e807ec5a4fbd8d54ee0fb9bb6dfdf5f3ecd7a4548309ea597af6910306e93f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e807ec5a4fbd8d54ee0fb9bb6dfdf5f3ecd7a4548309ea597af6910306e93f40", kill_on_drop: false }`
[INFO] [stdout] e807ec5a4fbd8d54ee0fb9bb6dfdf5f3ecd7a4548309ea597af6910306e93f40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] 62fe946344da44aa6d7c04d81902c5361c1324286cd5cff0aa444115861d3476
[INFO] running `Command { std: "docker" "start" "-a" "62fe946344da44aa6d7c04d81902c5361c1324286cd5cff0aa444115861d3476", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]  Documenting fix-rat v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `fix-rat`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:128:1
[INFO] [stdout]     |
[INFO] [stdout] 128 | #![feature(min_const_generics)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]     |
[INFO] [stdout]     = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name fix_rat src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="nightly"' --cfg 'feature="serde"' --cfg 'feature="serde1"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b3d9d7c0dd5a0934 -L dependency=/opt/rustwide/target/debug/deps --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-ef4d14495cc7009a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1a8241bae34a0cf7.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "62fe946344da44aa6d7c04d81902c5361c1324286cd5cff0aa444115861d3476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fe946344da44aa6d7c04d81902c5361c1324286cd5cff0aa444115861d3476", kill_on_drop: false }`
[INFO] [stdout] 62fe946344da44aa6d7c04d81902c5361c1324286cd5cff0aa444115861d3476