[INFO] fetching crate atter 0.1.1...
[INFO] documenting atter-0.1.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate atter 0.1.1 into /workspace/builds/worker-45/source
[INFO] validating manifest of crates.io crate atter 0.1.1 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 atter 0.1.1
[INFO] finished tweaking crates.io crate atter 0.1.1
[INFO] tweaked toml for crates.io crate atter 0.1.1 written to /workspace/builds/worker-45/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] f761dbb2c9afc22dc3ef8372ce87d9a0118956d553f733fc4bae3ea87a548e1d
[INFO] running `Command { std: "docker" "start" "-a" "f761dbb2c9afc22dc3ef8372ce87d9a0118956d553f733fc4bae3ea87a548e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f761dbb2c9afc22dc3ef8372ce87d9a0118956d553f733fc4bae3ea87a548e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f761dbb2c9afc22dc3ef8372ce87d9a0118956d553f733fc4bae3ea87a548e1d", kill_on_drop: false }`
[INFO] [stdout] f761dbb2c9afc22dc3ef8372ce87d9a0118956d553f733fc4bae3ea87a548e1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] d60b25c8c584353159f855374382727dbd63f99b2be66706ac123380efe84e51
[INFO] running `Command { std: "docker" "start" "-a" "d60b25c8c584353159f855374382727dbd63f99b2be66706ac123380efe84e51", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libsqlite3-sys v0.22.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking object v0.26.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking hashlink v0.7.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking rusqlite v0.25.3
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting atter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:279:1
[INFO] [stdout]     |
[INFO] [stdout] 279 | #![feature(try_from)]
[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 `atter`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name atter 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 chrono=/opt/rustwide/target/debug/deps/libchrono-977b7a68d8c8d44d.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-6bce682b81bf8ebb.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-217fa886d5b907b3.so --extern regex=/opt/rustwide/target/debug/deps/libregex-add8057423b0939b.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-08cac4c0696eea85.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-6a5809dcce96c926.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-a66a1fdf9c467eb8.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-9252ccb80ede1acc.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-e9f36914da45d354.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-19501c4ae57c0a10.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d60b25c8c584353159f855374382727dbd63f99b2be66706ac123380efe84e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d60b25c8c584353159f855374382727dbd63f99b2be66706ac123380efe84e51", kill_on_drop: false }`
[INFO] [stdout] d60b25c8c584353159f855374382727dbd63f99b2be66706ac123380efe84e51
