[INFO] cloning repository https://github.com/PaulGrandperrin/redis-reindex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PaulGrandperrin/redis-reindex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fredis-reindex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fredis-reindex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 348739275c0d6ea62ed92f843b15285c14525a16
[INFO] documenting PaulGrandperrin/redis-reindex 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%2FPaulGrandperrin%2Fredis-reindex" "/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/PaulGrandperrin/redis-reindex 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/PaulGrandperrin/redis-reindex
[INFO] finished tweaking git repo https://github.com/PaulGrandperrin/redis-reindex
[INFO] tweaked toml for git repo https://github.com/PaulGrandperrin/redis-reindex written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/PaulGrandperrin/redis-reindex 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] 4405c0e79d5503d63686911ffff51099d9fadc82f4d0dde7ab0b472fb9f6e6f7
[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" "4405c0e79d5503d63686911ffff51099d9fadc82f4d0dde7ab0b472fb9f6e6f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4405c0e79d5503d63686911ffff51099d9fadc82f4d0dde7ab0b472fb9f6e6f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4405c0e79d5503d63686911ffff51099d9fadc82f4d0dde7ab0b472fb9f6e6f7", kill_on_drop: false }`
[INFO] [stdout] 4405c0e79d5503d63686911ffff51099d9fadc82f4d0dde7ab0b472fb9f6e6f7
[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] [stdout] 7a067e3c1938d6d14f718ec4c6506b461598b8848ac9234e1f9e2871939ca455
[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" "7a067e3c1938d6d14f718ec4c6506b461598b8848ac9234e1f9e2871939ca455", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking pin-project-lite v0.1.2
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking redis v0.14.0
[INFO] [stderr]  Documenting redis-reindex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[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 `redis-reindex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name redis_reindex 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 crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-6f6626dcb6ae4ef6.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-37269ee8a914e86e.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-5d3f398d58daa332.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-bf3f23fab58501db.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-bd4fc12abdaadb42.rmeta --extern redis=/opt/rustwide/target/debug/deps/libredis-bc381e23d416c4d9.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "7a067e3c1938d6d14f718ec4c6506b461598b8848ac9234e1f9e2871939ca455", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a067e3c1938d6d14f718ec4c6506b461598b8848ac9234e1f9e2871939ca455", kill_on_drop: false }`
[INFO] [stdout] 7a067e3c1938d6d14f718ec4c6506b461598b8848ac9234e1f9e2871939ca455