[INFO] fetching crate tdn_permission 0.2.0...
[INFO] documenting tdn_permission-0.2.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate tdn_permission 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tdn_permission 0.2.0 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 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-8/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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 11dd2f6d8918c9cc37c1ac6f56c360797b9a92ef77265a897dcfe49a8f46802f
[INFO] running `Command { std: "docker" "start" "-a" "11dd2f6d8918c9cc37c1ac6f56c360797b9a92ef77265a897dcfe49a8f46802f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11dd2f6d8918c9cc37c1ac6f56c360797b9a92ef77265a897dcfe49a8f46802f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11dd2f6d8918c9cc37c1ac6f56c360797b9a92ef77265a897dcfe49a8f46802f", kill_on_drop: false }`
[INFO] [stdout] 11dd2f6d8918c9cc37c1ac6f56c360797b9a92ef77265a897dcfe49a8f46802f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 287674e2b5bd711855c66b40b32b79ba3296b8db7610232fcf83f5a08894991f
[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" "287674e2b5bd711855c66b40b32b79ba3296b8db7610232fcf83f5a08894991f", kill_on_drop: false }`
[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]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking sha3 v0.9.1
[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 chamomile_types v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.44
[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 stable 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-05879d9ec317a83e.rmeta --extern postcard=/opt/rustwide/target/debug/deps/libpostcard-54d7f1968028a793.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-15cb9e029be8c6c1.rmeta --extern tdn_types=/opt/rustwide/target/debug/deps/libtdn_types-23df88e5962c9d38.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "287674e2b5bd711855c66b40b32b79ba3296b8db7610232fcf83f5a08894991f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "287674e2b5bd711855c66b40b32b79ba3296b8db7610232fcf83f5a08894991f", kill_on_drop: false }`
[INFO] [stdout] 287674e2b5bd711855c66b40b32b79ba3296b8db7610232fcf83f5a08894991f
