[INFO] fetching crate multiformats 0.1.0...
[INFO] documenting multiformats-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate multiformats 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate multiformats 0.1.0 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 multiformats 0.1.0
[INFO] finished tweaking crates.io crate multiformats 0.1.0
[INFO] tweaked toml for crates.io crate multiformats 0.1.0 written to /workspace/builds/worker-28/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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] d5a407af38c62519aa116ce243b2e6a62a9254683d8f4940b398fb6b254da9a5
[INFO] running `Command { std: "docker" "start" "-a" "d5a407af38c62519aa116ce243b2e6a62a9254683d8f4940b398fb6b254da9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5a407af38c62519aa116ce243b2e6a62a9254683d8f4940b398fb6b254da9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a407af38c62519aa116ce243b2e6a62a9254683d8f4940b398fb6b254da9a5", kill_on_drop: false }`
[INFO] [stdout] d5a407af38c62519aa116ce243b2e6a62a9254683d8f4940b398fb6b254da9a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 16e749e8b1e7e5a0f24779a654c7c7f4d0031238b5069712badf7454fcdaa248
[INFO] running `Command { std: "docker" "start" "-a" "16e749e8b1e7e5a0f24779a654c7c7f4d0031238b5069712badf7454fcdaa248", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking base-x v0.2.10
[INFO] [stderr]     Checking keccak v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking unsigned-varint v0.5.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking ripemd320 v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking ripemd160 v0.9.1
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking md4 v0.9.0
[INFO] [stderr]     Checking threefish-cipher v0.4.0
[INFO] [stderr]     Checking skein-hash v0.3.1
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.10
[INFO] [stderr]     Checking data-encoding-macro v0.1.12
[INFO] [stderr]     Checking multibase v0.8.0
[INFO] [stderr]  Documenting multiformats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/multihash/mod.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `multiformats`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name multiformats src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a2d8a96e15174d28 -L dependency=/opt/rustwide/target/debug/deps --extern blake2b_simd=/opt/rustwide/target/debug/deps/libblake2b_simd-878c1846813a4b32.rmeta --extern blake2s_simd=/opt/rustwide/target/debug/deps/libblake2s_simd-7f43964700f202fb.rmeta --extern blake3=/opt/rustwide/target/debug/deps/libblake3-ca63e27021117f98.rmeta --extern bs58=/opt/rustwide/target/debug/deps/libbs58-a898daf307e40666.rmeta --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-0f5d7e9bf36b9b28.rmeta --extern data_encoding_macro=/opt/rustwide/target/debug/deps/libdata_encoding_macro-12fc58b1ee7a13b5.rmeta --extern digest=/opt/rustwide/target/debug/deps/libdigest-78fec42df736d793.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern md4=/opt/rustwide/target/debug/deps/libmd4-aa34a6844bc3de4c.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-344a5d5e6a154a87.rmeta --extern multibase=/opt/rustwide/target/debug/deps/libmultibase-0bcf0dd82d8ffaf8.rmeta --extern ripemd160=/opt/rustwide/target/debug/deps/libripemd160-41c1d267cafc3353.rmeta --extern ripemd320=/opt/rustwide/target/debug/deps/libripemd320-f1df2037014907ef.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-82d32419b7386cb9.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-e945a4001b60efdc.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-1c6bf24618797a09.rmeta --extern skein_hash=/opt/rustwide/target/debug/deps/libskein_hash-83d79f7f231faa86.rmeta --extern unsigned_varint=/opt/rustwide/target/debug/deps/libunsigned_varint-02edbdc047767233.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "16e749e8b1e7e5a0f24779a654c7c7f4d0031238b5069712badf7454fcdaa248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e749e8b1e7e5a0f24779a654c7c7f4d0031238b5069712badf7454fcdaa248", kill_on_drop: false }`
[INFO] [stdout] 16e749e8b1e7e5a0f24779a654c7c7f4d0031238b5069712badf7454fcdaa248