[INFO] fetching crate parse_torrent 0.5.2...
[INFO] documenting parse_torrent-0.5.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate parse_torrent 0.5.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate parse_torrent 0.5.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_bytes v0.10.5
[INFO] [stderr]   Downloaded serde_codegen v0.8.23
[INFO] [stderr]   Downloaded serde_derive v0.8.23
[INFO] [stderr]   Downloaded bincode v0.6.1
[INFO] [stderr]   Downloaded serde_codegen_internals v0.11.3
[INFO] [stderr]   Downloaded bencode v0.1.16
[INFO] [stderr]   Downloaded serde_bencode v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 001492ce60e62d7776d693878dec4f8ba85feb4139c72c6ecdc5c0c7f3895954
[INFO] running `Command { std: "docker" "start" "-a" "001492ce60e62d7776d693878dec4f8ba85feb4139c72c6ecdc5c0c7f3895954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "001492ce60e62d7776d693878dec4f8ba85feb4139c72c6ecdc5c0c7f3895954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "001492ce60e62d7776d693878dec4f8ba85feb4139c72c6ecdc5c0c7f3895954", kill_on_drop: false }`
[INFO] [stdout] 001492ce60e62d7776d693878dec4f8ba85feb4139c72c6ecdc5c0c7f3895954
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98721f7b89900f4ead4fb447912ed129284c138989b3d878fbb313ff154d5d83
[INFO] running `Command { std: "docker" "start" "-a" "98721f7b89900f4ead4fb447912ed129284c138989b3d878fbb313ff154d5d83", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking bencode v0.1.16
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]     Checking serde_bencode v0.1.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking serde_bytes v0.10.5
[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]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[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,artifacts,future-incompat --document-private-items -C metadata=59fe48d18f8a0ee6 -L dependency=/opt/rustwide/target/debug/deps --extern bencode=/opt/rustwide/target/debug/deps/libbencode-a3b15f1008a498ed.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-da663b8dd0a91f9b.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-e2cc89b996ebbe3d.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-4c95bc621f41dc94.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-8bfa9ab41fa1e22e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bf94024bcb1b7a16.rmeta --extern serde_bencode=/opt/rustwide/target/debug/deps/libserde_bencode-0fa549c5fc26dd29.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-00c7b90c6386374b.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-10852681b9a95822.so --extern sha1=/opt/rustwide/target/debug/deps/libsha1-8937a9dc6a9718d5.rmeta --cap-lints=warn --crate-version 0.5.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "98721f7b89900f4ead4fb447912ed129284c138989b3d878fbb313ff154d5d83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98721f7b89900f4ead4fb447912ed129284c138989b3d878fbb313ff154d5d83", kill_on_drop: false }`
[INFO] [stdout] 98721f7b89900f4ead4fb447912ed129284c138989b3d878fbb313ff154d5d83