[INFO] cloning repository https://github.com/pypypypypypypypypyp/space_client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pypypypypypypypypyp/space_client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpypypypypypypypypyp%2Fspace_client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpypypypypypypypypyp%2Fspace_client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67224b0085bcaccb428923bc4bb436081bb4a605
[INFO] documenting pypypypypypypypypyp/space_client 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%2Fpypypypypypypypypyp%2Fspace_client" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pypypypypypypypypyp/space_client 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/pypypypypypypypypyp/space_client
[INFO] finished tweaking git repo https://github.com/pypypypypypypypypyp/space_client
[INFO] tweaked toml for git repo https://github.com/pypypypypypypypypyp/space_client written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/pypypypypypypypypyp/space_client 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 1fae1531245652eccc66d557ec6003f978917ff8a8ce7cd3bb601a69a7df9d37
[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" "1fae1531245652eccc66d557ec6003f978917ff8a8ce7cd3bb601a69a7df9d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fae1531245652eccc66d557ec6003f978917ff8a8ce7cd3bb601a69a7df9d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fae1531245652eccc66d557ec6003f978917ff8a8ce7cd3bb601a69a7df9d37", kill_on_drop: false }`
[INFO] [stdout] 1fae1531245652eccc66d557ec6003f978917ff8a8ce7cd3bb601a69a7df9d37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 46f9bba89710d757a39ba14eca8131f5bf20019e6669292306b7c6b6b9e6d4b8
[INFO] running `Command { std: "docker" "start" "-a" "46f9bba89710d757a39ba14eca8131f5bf20019e6669292306b7c6b6b9e6d4b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking array_tuple v0.1.0 (https://github.com/pypypypypypypypypyp/array_tuple#a75ae591)
[INFO] [stderr]     Checking limiter v0.1.0 (https://github.com/pypypypypypypypypyp/limiter#f812738f)
[INFO] [stderr]     Checking terminal v0.1.0 (https://github.com/pypypypypypypypypyp/terminal#19316794)
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/array_tuple-50bd20982362b952/a75ae59/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `array_tuple`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "46f9bba89710d757a39ba14eca8131f5bf20019e6669292306b7c6b6b9e6d4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f9bba89710d757a39ba14eca8131f5bf20019e6669292306b7c6b6b9e6d4b8", kill_on_drop: false }`
[INFO] [stdout] 46f9bba89710d757a39ba14eca8131f5bf20019e6669292306b7c6b6b9e6d4b8