[INFO] fetching crate dao 0.1.0...
[INFO] documenting dao-0.1.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate dao 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate dao 0.1.0 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 dao 0.1.0
[INFO] finished tweaking crates.io crate dao 0.1.0
[INFO] tweaked toml for crates.io crate dao 0.1.0 written to /workspace/builds/worker-11/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] ca2c0d569aa060530a42b74141bfcb4a6d1f6d9744a186b73e221cfee326e534
[INFO] running `Command { std: "docker" "start" "-a" "ca2c0d569aa060530a42b74141bfcb4a6d1f6d9744a186b73e221cfee326e534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca2c0d569aa060530a42b74141bfcb4a6d1f6d9744a186b73e221cfee326e534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2c0d569aa060530a42b74141bfcb4a6d1f6d9744a186b73e221cfee326e534", kill_on_drop: false }`
[INFO] [stdout] ca2c0d569aa060530a42b74141bfcb4a6d1f6d9744a186b73e221cfee326e534
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 24786179938b3f7a31bac386374b03375964606cd5f948e0b757e62820ffd7cf
[INFO] running `Command { std: "docker" "start" "-a" "24786179938b3f7a31bac386374b03375964606cd5f948e0b757e62820ffd7cf", kill_on_drop: false }`
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking bigdecimal v0.0.10
[INFO] [stderr]  Documenting dao v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `dao`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name dao 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 bigdecimal=/opt/rustwide/target/debug/deps/libbigdecimal-227a1ed8a317e8bb.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-e313e66b25c8d910.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5678c1422d6b64cb.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-05e319b971c8ec6f.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-9010c99f689210cb.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-233bc604b074528f.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "24786179938b3f7a31bac386374b03375964606cd5f948e0b757e62820ffd7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24786179938b3f7a31bac386374b03375964606cd5f948e0b757e62820ffd7cf", kill_on_drop: false }`
[INFO] [stdout] 24786179938b3f7a31bac386374b03375964606cd5f948e0b757e62820ffd7cf
