[INFO] cloning repository https://github.com/LesleyLai/rustpie
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LesleyLai/rustpie" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLesleyLai%2Frustpie", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLesleyLai%2Frustpie'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45dc5004d3a95f63b7c951fd26fcb64ff296ee8e
[INFO] documenting LesleyLai/rustpie against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLesleyLai%2Frustpie" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LesleyLai/rustpie 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 git repo https://github.com/LesleyLai/rustpie
[INFO] finished tweaking git repo https://github.com/LesleyLai/rustpie
[INFO] tweaked toml for git repo https://github.com/LesleyLai/rustpie written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/LesleyLai/rustpie 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded terminal_size v0.1.15
[INFO] [stderr]   Downloaded console v0.14.0
[INFO] [stderr]   Downloaded bitmaps v2.1.0
[INFO] [stderr]   Downloaded rand_xoshiro v0.4.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.15
[INFO] [stderr]   Downloaded insta v1.5.2
[INFO] [stderr]   Downloaded rustyline v7.1.0
[INFO] [stderr]   Downloaded im v15.0.0
[INFO] [stderr]   Downloaded sized-chunks v0.6.2
[INFO] [stderr]   Downloaded dtoa v0.4.7
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a4a7d7d2a1e30d90fbcf4b2cd40a1bfdbd510b6a5260c053c70d286ae3ff9977
[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" "a4a7d7d2a1e30d90fbcf4b2cd40a1bfdbd510b6a5260c053c70d286ae3ff9977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a7d7d2a1e30d90fbcf4b2cd40a1bfdbd510b6a5260c053c70d286ae3ff9977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a7d7d2a1e30d90fbcf4b2cd40a1bfdbd510b6a5260c053c70d286ae3ff9977", kill_on_drop: false }`
[INFO] [stdout] a4a7d7d2a1e30d90fbcf4b2cd40a1bfdbd510b6a5260c053c70d286ae3ff9977
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 974937ce41862e52ac32fc0652ec53df0ee8fa96699b19cd2a7ae7e852bbb490
[INFO] running `Command { std: "docker" "start" "-a" "974937ce41862e52ac32fc0652ec53df0ee8fa96699b19cd2a7ae7e852bbb490", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]     Checking sized-chunks v0.6.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking rustyline v7.1.0
[INFO] [stderr]  Documenting rustpie v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_fold_self)]
[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 `rustpie`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rustpie src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern im=/opt/rustwide/target/debug/deps/libim-7a76248a432708ff.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-fcda41614aa98944.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-58dd7eca9aaa394a.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-adf3970b553dc93c.so --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-18857e7d387a8732.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "974937ce41862e52ac32fc0652ec53df0ee8fa96699b19cd2a7ae7e852bbb490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "974937ce41862e52ac32fc0652ec53df0ee8fa96699b19cd2a7ae7e852bbb490", kill_on_drop: false }`
[INFO] [stdout] 974937ce41862e52ac32fc0652ec53df0ee8fa96699b19cd2a7ae7e852bbb490
