[INFO] cloning repository https://github.com/PanQL/ppm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PanQL/ppm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPanQL%2Fppm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPanQL%2Fppm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8340847ac13cb4f38d39cfd8e565b6a0a59d330
[INFO] documenting PanQL/ppm 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%2FPanQL%2Fppm" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PanQL/ppm 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/PanQL/ppm
[INFO] finished tweaking git repo https://github.com/PanQL/ppm
[INFO] tweaked toml for git repo https://github.com/PanQL/ppm written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/PanQL/ppm 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 30d093b0ba02034dbc6230c000b5904bf8ab7881ad7786888d7286d8851dcee4
[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" "30d093b0ba02034dbc6230c000b5904bf8ab7881ad7786888d7286d8851dcee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30d093b0ba02034dbc6230c000b5904bf8ab7881ad7786888d7286d8851dcee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d093b0ba02034dbc6230c000b5904bf8ab7881ad7786888d7286d8851dcee4", kill_on_drop: false }`
[INFO] [stdout] 30d093b0ba02034dbc6230c000b5904bf8ab7881ad7786888d7286d8851dcee4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa5863fe804e09395f951fe2aa4cbc78efaa63c98d3808a4ee8acf89250b2233
[INFO] running `Command { std: "docker" "start" "-a" "aa5863fe804e09395f951fe2aa4cbc78efaa63c98d3808a4ee8acf89250b2233", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking kdtree v0.5.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking lodepng v2.4.2
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]     Checking nalgebra v0.18.0
[INFO] [stderr]  Documenting ppm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(clamp)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(vec_resize_default)]
[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 `ppm`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ppm 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 env_logger=/opt/rustwide/target/debug/deps/libenv_logger-8717610fb8cf68c6.rmeta --extern kdtree=/opt/rustwide/target/debug/deps/libkdtree-afea28a42a17f416.rmeta --extern lodepng=/opt/rustwide/target/debug/deps/liblodepng-afe680fa27049a2a.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-eed1b8ce9f402c4e.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-78bfadce10b800f1.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-661f8bc1128d8c0f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-a106a19742bb298c.rmeta --extern rgb=/opt/rustwide/target/debug/deps/librgb-2bc5e2ae53b70f69.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-6b7812d2696eb807.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aa5863fe804e09395f951fe2aa4cbc78efaa63c98d3808a4ee8acf89250b2233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa5863fe804e09395f951fe2aa4cbc78efaa63c98d3808a4ee8acf89250b2233", kill_on_drop: false }`
[INFO] [stdout] aa5863fe804e09395f951fe2aa4cbc78efaa63c98d3808a4ee8acf89250b2233