[INFO] updating cached repository https://github.com/seansfkelley/terrain-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af734a187617c3b69b381788bf0b91fafd91d3fd
[INFO] documenting seansfkelley/terrain-generator against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseansfkelley%2Fterrain-generator" "/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/seansfkelley/terrain-generator on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seansfkelley/terrain-generator
[INFO] finished tweaking git repo https://github.com/seansfkelley/terrain-generator
[INFO] tweaked toml for git repo https://github.com/seansfkelley/terrain-generator written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/seansfkelley/terrain-generator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] d3d6c0d88ef49f47f29f2ce7773ea1431553928d4a8c168b78efcb82121ca67b
[INFO] running `Command { std: "docker" "start" "-a" "d3d6c0d88ef49f47f29f2ce7773ea1431553928d4a8c168b78efcb82121ca67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3d6c0d88ef49f47f29f2ce7773ea1431553928d4a8c168b78efcb82121ca67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3d6c0d88ef49f47f29f2ce7773ea1431553928d4a8c168b78efcb82121ca67b", kill_on_drop: false }`
[INFO] [stdout] d3d6c0d88ef49f47f29f2ce7773ea1431553928d4a8c168b78efcb82121ca67b
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56e76d2d15930abede0ab5a27bd6de64667bd0108c2ef6169ae4f3461a481941
[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" "56e76d2d15930abede0ab5a27bd6de64667bd0108c2ef6169ae4f3461a481941", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.32
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]     Checking either v1.3.0
[INFO] [stderr]    Compiling bitflags v1.0.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking inflate v0.3.3
[INFO] [stderr]     Checking semver v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling xml-rs v0.6.2
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]    Compiling cmake v0.1.26
[INFO] [stderr]     Checking rand v0.3.17
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]    Compiling glfw-sys v3.2.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling gl v0.6.3
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking quickcheck v0.2.27
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking glm v0.2.3
[INFO] [stderr]     Checking glfw v0.18.0 (https://github.com/bjz/glfw-rs.git#3bc2f8b2)
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]  Documenting terrain-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate libc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `terrain-generator`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name terrain_generator 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 env_logger=/opt/rustwide/target/debug/deps/libenv_logger-ac12fc999b9e94d7.rmeta --extern gl=/opt/rustwide/target/debug/deps/libgl-7372a931a5b32868.rmeta --extern glfw=/opt/rustwide/target/debug/deps/libglfw-112a2e82c15c2948.rmeta --extern glm=/opt/rustwide/target/debug/deps/libglm-b32cd3bf2f4695a0.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-02d9550af33088e1.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-07009b124329081f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-cdd1072f1e80c9b1.rmeta --extern multimap=/opt/rustwide/target/debug/deps/libmultimap-ec9f7f1deaf4f7a5.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-aaa254fe1c8bc7bb.rmeta --extern wavefront_obj=/opt/rustwide/target/debug/deps/libwavefront_obj-1df5171896c0d751.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "56e76d2d15930abede0ab5a27bd6de64667bd0108c2ef6169ae4f3461a481941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e76d2d15930abede0ab5a27bd6de64667bd0108c2ef6169ae4f3461a481941", kill_on_drop: false }`
[INFO] [stdout] 56e76d2d15930abede0ab5a27bd6de64667bd0108c2ef6169ae4f3461a481941