[INFO] fetching crate multiformats 0.1.0...
[INFO] documenting multiformats-0.1.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate multiformats 0.1.0 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate multiformats 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-17/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-2021-08-01" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parse_int v0.4.0
[INFO] [stderr]   Downloaded ripemd320 v0.9.0
[INFO] [stderr]   Downloaded ripemd160 v0.9.1
[INFO] [stderr]   Downloaded unsigned-varint v0.5.1
[INFO] [stderr]   Downloaded threefish-cipher v0.4.0
[INFO] [stderr]   Downloaded skein-hash v0.3.1
[INFO] [stderr]   Downloaded bs58 v0.3.1
[INFO] [stderr]   Downloaded data-encoding-macro-internal v0.1.10
[INFO] [stderr]   Downloaded md4 v0.9.0
[INFO] [stderr]   Downloaded multibase v0.8.0
[INFO] [stderr]   Downloaded data-encoding-macro v0.1.12
[INFO] [stderr]   Downloaded blake3 v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a53f3142c07e0aba5d9209e76f2a6e70ec62de403864e56a977cefc83721d70c
[INFO] running `Command { std: "docker" "start" "-a" "a53f3142c07e0aba5d9209e76f2a6e70ec62de403864e56a977cefc83721d70c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a53f3142c07e0aba5d9209e76f2a6e70ec62de403864e56a977cefc83721d70c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a53f3142c07e0aba5d9209e76f2a6e70ec62de403864e56a977cefc83721d70c", kill_on_drop: false }`
[INFO] [stdout] a53f3142c07e0aba5d9209e76f2a6e70ec62de403864e56a977cefc83721d70c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2702f3a6b3e6b7e4ba351c89c4ff0474a2b6ffd2b54e1b5531d42758d13790a
[INFO] running `Command { std: "docker" "start" "-a" "e2702f3a6b3e6b7e4ba351c89c4ff0474a2b6ffd2b54e1b5531d42758d13790a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking unsigned-varint v0.5.1
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking threefish-cipher v0.4.0
[INFO] [stderr]     Checking ripemd160 v0.9.1
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking ripemd320 v0.9.0
[INFO] [stderr]     Checking md4 v0.9.0
[INFO] [stderr]     Checking sha-1 v0.9.7
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[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] 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 `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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern blake2b_simd=/opt/rustwide/target/debug/deps/libblake2b_simd-c269dd5616f12b46.rmeta --extern blake2s_simd=/opt/rustwide/target/debug/deps/libblake2s_simd-28db1463304ed189.rmeta --extern blake3=/opt/rustwide/target/debug/deps/libblake3-d8c693393f18012e.rmeta --extern bs58=/opt/rustwide/target/debug/deps/libbs58-7f38e4f76598205c.rmeta --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-1bb90860e652ebb6.rmeta --extern data_encoding_macro=/opt/rustwide/target/debug/deps/libdata_encoding_macro-c9bc79f40b48d6a4.rmeta --extern digest=/opt/rustwide/target/debug/deps/libdigest-92c60e8b123204d1.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-5e37eee3e84fafab.rmeta --extern md4=/opt/rustwide/target/debug/deps/libmd4-5c4982f872e3760d.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-2321b753da7dc695.rmeta --extern multibase=/opt/rustwide/target/debug/deps/libmultibase-039a658db1225929.rmeta --extern ripemd160=/opt/rustwide/target/debug/deps/libripemd160-ff2147acd5da4fa0.rmeta --extern ripemd320=/opt/rustwide/target/debug/deps/libripemd320-30d1730a39f4e56b.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-c1cf9219710942df.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-2a507f1f9b1d3bbd.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-5e9ceee3312de4b5.rmeta --extern skein_hash=/opt/rustwide/target/debug/deps/libskein_hash-7c0c6b8c6978e373.rmeta --extern unsigned_varint=/opt/rustwide/target/debug/deps/libunsigned_varint-4c3da3eb70ced332.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e2702f3a6b3e6b7e4ba351c89c4ff0474a2b6ffd2b54e1b5531d42758d13790a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2702f3a6b3e6b7e4ba351c89c4ff0474a2b6ffd2b54e1b5531d42758d13790a", kill_on_drop: false }`
[INFO] [stdout] e2702f3a6b3e6b7e4ba351c89c4ff0474a2b6ffd2b54e1b5531d42758d13790a
