[INFO] fetching crate tdn_permission 0.2.0...
[INFO] documenting tdn_permission-0.2.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate tdn_permission 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tdn_permission 0.2.0 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 tdn_permission 0.2.0
[INFO] finished tweaking crates.io crate tdn_permission 0.2.0
[INFO] tweaked toml for crates.io crate tdn_permission 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tdn_permission 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chamomile v0.2.0
[INFO] [stderr]   Downloaded ed25519 v1.0.2
[INFO] [stderr]   Downloaded async-executor v1.1.1
[INFO] [stderr]   Downloaded rckad v0.0.6
[INFO] [stderr]   Downloaded postcard v0.5.1
[INFO] [stderr]   Downloaded async-io v1.1.1
[INFO] [stderr]   Downloaded futures-lite v1.4.0
[INFO] [stderr]   Downloaded polling v1.0.2
[INFO] [stderr]   Downloaded tdn v0.2.0
[INFO] [stderr]   Downloaded async-net v1.3.0
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0
[INFO] [stderr]   Downloaded async-lock v2.1.3
[INFO] [stderr]   Downloaded smol v1.0.1
[INFO] [stderr]   Downloaded tdn_types v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] a45ae5ff484a572e8fb680bc33d41addc8abb1593b35550b11e9c72be94b713c
[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" "a45ae5ff484a572e8fb680bc33d41addc8abb1593b35550b11e9c72be94b713c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a45ae5ff484a572e8fb680bc33d41addc8abb1593b35550b11e9c72be94b713c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a45ae5ff484a572e8fb680bc33d41addc8abb1593b35550b11e9c72be94b713c", kill_on_drop: false }`
[INFO] [stdout] a45ae5ff484a572e8fb680bc33d41addc8abb1593b35550b11e9c72be94b713c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 0b978d59103f56c81fed7f7c6b59c098bcfafcf71758d0d3085ded4d13e8bfb6
[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" "0b978d59103f56c81fed7f7c6b59c098bcfafcf71758d0d3085ded4d13e8bfb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking event-listener v2.4.0
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking chamomile_types v0.2.0
[INFO] [stderr]     Checking postcard v0.5.1
[INFO] [stderr]     Checking tdn_types v0.2.0
[INFO] [stderr]  Documenting tdn_permission v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 `tdn_permission`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tdn_permission 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 async_channel=/opt/rustwide/target/debug/deps/libasync_channel-52724c348f945a17.rmeta --extern postcard=/opt/rustwide/target/debug/deps/libpostcard-b923925222628e2a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-137345d4d13dbd2e.rmeta --extern tdn_types=/opt/rustwide/target/debug/deps/libtdn_types-83bcd7611b6e3c20.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0b978d59103f56c81fed7f7c6b59c098bcfafcf71758d0d3085ded4d13e8bfb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b978d59103f56c81fed7f7c6b59c098bcfafcf71758d0d3085ded4d13e8bfb6", kill_on_drop: false }`
[INFO] [stdout] 0b978d59103f56c81fed7f7c6b59c098bcfafcf71758d0d3085ded4d13e8bfb6
