[INFO] fetching crate enum-lexer 0.1.0...
[INFO] documenting enum-lexer-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate enum-lexer 0.1.0 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate enum-lexer 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 enum-lexer 0.1.0
[INFO] finished tweaking crates.io crate enum-lexer 0.1.0
[INFO] tweaked toml for crates.io crate enum-lexer 0.1.0 written to /workspace/builds/worker-55/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] c6c019557cba08c6c515c49ab56e4a0276cd2372bae7f1b85b5234a2f869f493
[INFO] running `Command { std: "docker" "start" "-a" "c6c019557cba08c6c515c49ab56e4a0276cd2372bae7f1b85b5234a2f869f493", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6c019557cba08c6c515c49ab56e4a0276cd2372bae7f1b85b5234a2f869f493", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c019557cba08c6c515c49ab56e4a0276cd2372bae7f1b85b5234a2f869f493", kill_on_drop: false }`
[INFO] [stdout] c6c019557cba08c6c515c49ab56e4a0276cd2372bae7f1b85b5234a2f869f493
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] 7c8fd5d9a5d475895e292de650f68ea1fde601c6e53fcd83fe9819c618df375b
[INFO] running `Command { std: "docker" "start" "-a" "7c8fd5d9a5d475895e292de650f68ea1fde601c6e53fcd83fe9819c618df375b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling sorted-vec v0.3.7
[INFO] [stderr]    Compiling dot v0.1.4
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]    Compiling regex-dfa-gen v0.1.0
[INFO] [stderr]    Compiling enum-lexer-macro v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enum-lexer-macro-0.1.0/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_quote)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum-lexer-macro` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7c8fd5d9a5d475895e292de650f68ea1fde601c6e53fcd83fe9819c618df375b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c8fd5d9a5d475895e292de650f68ea1fde601c6e53fcd83fe9819c618df375b", kill_on_drop: false }`
[INFO] [stdout] 7c8fd5d9a5d475895e292de650f68ea1fde601c6e53fcd83fe9819c618df375b