[INFO] fetching crate scaled 0.0.3...
[INFO] documenting scaled-0.0.3 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate scaled 0.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate scaled 0.0.3 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 scaled 0.0.3
[INFO] finished tweaking crates.io crate scaled 0.0.3
[INFO] tweaked toml for crates.io crate scaled 0.0.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate scaled 0.0.3 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 fixed-sqrt v0.2.4
[INFO] [stderr]   Downloaded fixed v1.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14a155a7cc7991986d81e2a822a0eee095c7cedb133b0a0a3f2728a72b72b600
[INFO] running `Command { std: "docker" "start" "-a" "14a155a7cc7991986d81e2a822a0eee095c7cedb133b0a0a3f2728a72b72b600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14a155a7cc7991986d81e2a822a0eee095c7cedb133b0a0a3f2728a72b72b600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14a155a7cc7991986d81e2a822a0eee095c7cedb133b0a0a3f2728a72b72b600", kill_on_drop: false }`
[INFO] [stdout] 14a155a7cc7991986d81e2a822a0eee095c7cedb133b0a0a3f2728a72b72b600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 151f9407f279636b90f657a75f2c1f65578fb284eec288fb8e9ad3511f31cb9b
[INFO] running `Command { std: "docker" "start" "-a" "151f9407f279636b90f657a75f2c1f65578fb284eec288fb8e9ad3511f31cb9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixed v1.4.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking euclid v0.22.1
[INFO] [stderr]     Checking fixed-sqrt v0.2.4
[INFO] [stderr]  Documenting scaled v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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 `scaled`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name scaled 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 euclid=/opt/rustwide/target/debug/deps/libeuclid-f710c19c2c2a84d6.rmeta --extern fixed=/opt/rustwide/target/debug/deps/libfixed-b194abebb5ac7c5e.rmeta --extern fixed_sqrt=/opt/rustwide/target/debug/deps/libfixed_sqrt-2a87cb55dc126607.rmeta --cap-lints=warn --crate-version 0.0.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "151f9407f279636b90f657a75f2c1f65578fb284eec288fb8e9ad3511f31cb9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "151f9407f279636b90f657a75f2c1f65578fb284eec288fb8e9ad3511f31cb9b", kill_on_drop: false }`
[INFO] [stdout] 151f9407f279636b90f657a75f2c1f65578fb284eec288fb8e9ad3511f31cb9b
