[INFO] cloning repository https://github.com/hherman1/ParallelProgrammingCapstone
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hherman1/ParallelProgrammingCapstone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhherman1%2FParallelProgrammingCapstone", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhherman1%2FParallelProgrammingCapstone'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45833dce857d7796c71542ed785e526e6bc16269
[INFO] documenting hherman1/ParallelProgrammingCapstone against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhherman1%2FParallelProgrammingCapstone" "/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/hherman1/ParallelProgrammingCapstone on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hherman1/ParallelProgrammingCapstone
[INFO] finished tweaking git repo https://github.com/hherman1/ParallelProgrammingCapstone
[INFO] tweaked toml for git repo https://github.com/hherman1/ParallelProgrammingCapstone written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hherman1/ParallelProgrammingCapstone already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f00f67f017729c43f99da4e4eb519e155b2eefedbf6bf0669be1a0dddddf0236
[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" "f00f67f017729c43f99da4e4eb519e155b2eefedbf6bf0669be1a0dddddf0236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f00f67f017729c43f99da4e4eb519e155b2eefedbf6bf0669be1a0dddddf0236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00f67f017729c43f99da4e4eb519e155b2eefedbf6bf0669be1a0dddddf0236", kill_on_drop: false }`
[INFO] [stdout] f00f67f017729c43f99da4e4eb519e155b2eefedbf6bf0669be1a0dddddf0236
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc98ff126ca86596d7206b058b800b97fc0cb6b2a7137c5352984e930c9f65cf
[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" "bc98ff126ca86596d7206b058b800b97fc0cb6b2a7137c5352984e930c9f65cf", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking suffix v1.0.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]    Compiling saxx v0.1.2
[INFO] [stderr]     Checking rayon v0.9.0
[INFO] [stderr]  Documenting parallel_lz77 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::heap`
[INFO] [stdout]  --> src/utils.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::heap::Alloc;
[INFO] [stdout]   |          ^^^^ could not find `heap` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(unique)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(allocator_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![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 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `parallel_lz77`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name parallel_lz77 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 ansi_term=/opt/rustwide/target/debug/deps/libansi_term-a96b0497683bb51a.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-883aac0810c413a1.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-cf6de5a7670865a1.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-98fd807df4ba2c4d.rmeta --extern saxx=/opt/rustwide/target/debug/deps/libsaxx-d575c66c4b3e640c.rmeta --extern suffix=/opt/rustwide/target/debug/deps/libsuffix-0c39bca994197823.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "bc98ff126ca86596d7206b058b800b97fc0cb6b2a7137c5352984e930c9f65cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc98ff126ca86596d7206b058b800b97fc0cb6b2a7137c5352984e930c9f65cf", kill_on_drop: false }`
[INFO] [stdout] bc98ff126ca86596d7206b058b800b97fc0cb6b2a7137c5352984e930c9f65cf