[INFO] fetching crate parse_torrent 0.5.2...
[INFO] documenting parse_torrent-0.5.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate parse_torrent 0.5.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate parse_torrent 0.5.2 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parse_torrent 0.5.2
[INFO] finished tweaking crates.io crate parse_torrent 0.5.2
[INFO] tweaked toml for crates.io crate parse_torrent 0.5.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afec72392a990f449a619a3e912cd075440d1c5417f9e27a73fde47012a5f806
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "afec72392a990f449a619a3e912cd075440d1c5417f9e27a73fde47012a5f806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afec72392a990f449a619a3e912cd075440d1c5417f9e27a73fde47012a5f806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afec72392a990f449a619a3e912cd075440d1c5417f9e27a73fde47012a5f806", kill_on_drop: false }`
[INFO] [stdout] afec72392a990f449a619a3e912cd075440d1c5417f9e27a73fde47012a5f806
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c39fa28455db06aaaf6bd9bb9596429443034d87353bfea66906d2ecb7a509d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c39fa28455db06aaaf6bd9bb9596429443034d87353bfea66906d2ecb7a509d", kill_on_drop: false }`
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking serde_bencode v0.1.3
[INFO] [stderr]  Documenting parse_torrent v0.5.2 (/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(proc_macro)] // Rust nightly
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `parse_torrent`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name parse_torrent 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 bencode=/opt/rustwide/target/debug/deps/libbencode-afe089dd8d0ebb36.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-5112469ca88c42ee.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-a58fecdeab7eed2f.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-890a98193efafa7c.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-0e355727854478f2.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9d166aa4ebf1d15d.rmeta --extern serde_bencode=/opt/rustwide/target/debug/deps/libserde_bencode-c95d77160a79c921.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-f07cc9badb98edb3.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e1180fa8ade7b1c5.so --extern sha1=/opt/rustwide/target/debug/deps/libsha1-f125074f9effaf4b.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2c39fa28455db06aaaf6bd9bb9596429443034d87353bfea66906d2ecb7a509d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c39fa28455db06aaaf6bd9bb9596429443034d87353bfea66906d2ecb7a509d", kill_on_drop: false }`
[INFO] [stdout] 2c39fa28455db06aaaf6bd9bb9596429443034d87353bfea66906d2ecb7a509d