[INFO] fetching crate atter 0.1.1...
[INFO] documenting atter-0.1.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate atter 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate atter 0.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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 bincode v0.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b401bde3da145e335fcb808589328bcdced80337a489049adc0d0276d2919ec
[INFO] running `Command { std: "docker" "start" "-a" "2b401bde3da145e335fcb808589328bcdced80337a489049adc0d0276d2919ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b401bde3da145e335fcb808589328bcdced80337a489049adc0d0276d2919ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b401bde3da145e335fcb808589328bcdced80337a489049adc0d0276d2919ec", kill_on_drop: false }`
[INFO] [stdout] 2b401bde3da145e335fcb808589328bcdced80337a489049adc0d0276d2919ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b8f1c5d02579d54c153cfef15bef285f92410df26c2470b4ede659180d02e87
[INFO] running `Command { std: "docker" "start" "-a" "7b8f1c5d02579d54c153cfef15bef285f92410df26c2470b4ede659180d02e87", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[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 num-traits v0.2.14
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libsqlite3-sys v0.22.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking hashlink v0.7.0
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking rusqlite v0.25.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]  Documenting atter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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-fb585d19c455bffe.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-135f52c2ac3a573c.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-ad7cc66fddb0411d.so --extern regex=/opt/rustwide/target/debug/deps/libregex-f5cb222ddd7062a0.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-91f184841b583c15.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5678c1422d6b64cb.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-05e319b971c8ec6f.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-218233080ff2ed5a.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-e5d7c8a0cbdc5d59.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-aa2989217353af70.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7b8f1c5d02579d54c153cfef15bef285f92410df26c2470b4ede659180d02e87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b8f1c5d02579d54c153cfef15bef285f92410df26c2470b4ede659180d02e87", kill_on_drop: false }`
[INFO] [stdout] 7b8f1c5d02579d54c153cfef15bef285f92410df26c2470b4ede659180d02e87
