[INFO] cloning repository https://github.com/playXE/pgc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/playXE/pgc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fpgc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fpgc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fe4a517a8dfd065c29363ad4473a59e2b7cb39d
[INFO] documenting playXE/pgc against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fpgc" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/playXE/pgc on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/playXE/pgc
[INFO] finished tweaking git repo https://github.com/playXE/pgc
[INFO] tweaked toml for git repo https://github.com/playXE/pgc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/playXE/pgc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimalloc v0.1.22
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.18
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 9abf3189ad71f44f387d697fbf2ca388fbac061846eb84c22a05395ee262df3d
[INFO] running `Command { std: "docker" "start" "-a" "9abf3189ad71f44f387d697fbf2ca388fbac061846eb84c22a05395ee262df3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9abf3189ad71f44f387d697fbf2ca388fbac061846eb84c22a05395ee262df3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9abf3189ad71f44f387d697fbf2ca388fbac061846eb84c22a05395ee262df3d", kill_on_drop: false }`
[INFO] [stdout] 9abf3189ad71f44f387d697fbf2ca388fbac061846eb84c22a05395ee262df3d
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 36f021c4a35d9ac8d51fbc4b7db88d81bb473822b1a6e07dda7e59b3c6b84ba0
[INFO] running `Command { std: "docker" "start" "-a" "36f021c4a35d9ac8d51fbc4b7db88d81bb473822b1a6e07dda7e59b3c6b84ba0", kill_on_drop: false }`
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.18
[INFO] [stderr]     Checking mimalloc v0.1.22
[INFO] [stderr]  Documenting pgc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(coerce_unsized)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(unsize)]
[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 `pgc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pgc src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_deque=/opt/rustwide/target/debug/deps/libcrossbeam_deque-af612d193addd715.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-82c6b0e33b42e760.rmeta --extern mimalloc=/opt/rustwide/target/debug/deps/libmimalloc-1a65bab51b62a69d.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-0c183c9bcc34856d.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-2773d98b99dd6d26.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-05b22010c1859f50.rmeta --extern scoped_threadpool=/opt/rustwide/target/debug/deps/libscoped_threadpool-c264290d6b37b518.rmeta --extern threadpool=/opt/rustwide/target/debug/deps/libthreadpool-7ad95bc4d2ab184b.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-eea53a02e5671cdc.rmeta --cap-lints=warn --crate-version 0.3.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "36f021c4a35d9ac8d51fbc4b7db88d81bb473822b1a6e07dda7e59b3c6b84ba0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36f021c4a35d9ac8d51fbc4b7db88d81bb473822b1a6e07dda7e59b3c6b84ba0", kill_on_drop: false }`
[INFO] [stdout] 36f021c4a35d9ac8d51fbc4b7db88d81bb473822b1a6e07dda7e59b3c6b84ba0
