[INFO] cloning repository https://github.com/brdgme/lost-cities
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brdgme/lost-cities" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrdgme%2Flost-cities", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrdgme%2Flost-cities'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25ce20c5cef5f6c0849da3e8514e18f086f5d605
[INFO] documenting brdgme/lost-cities 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%2Fbrdgme%2Flost-cities" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brdgme/lost-cities 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/brdgme/lost-cities
[INFO] finished tweaking git repo https://github.com/brdgme/lost-cities
[INFO] tweaked toml for git repo https://github.com/brdgme/lost-cities written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/brdgme/lost-cities 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 61592b8b131c591bea60e39a76c66a24dd7c6094024eaafe899f5bac887aa4c8
[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" "61592b8b131c591bea60e39a76c66a24dd7c6094024eaafe899f5bac887aa4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61592b8b131c591bea60e39a76c66a24dd7c6094024eaafe899f5bac887aa4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61592b8b131c591bea60e39a76c66a24dd7c6094024eaafe899f5bac887aa4c8", kill_on_drop: false }`
[INFO] [stdout] 61592b8b131c591bea60e39a76c66a24dd7c6094024eaafe899f5bac887aa4c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e85a8713f40104556ed5f40687e765c6c264fce4442cef53c1a46c1487726b7a
[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" "e85a8713f40104556ed5f40687e765c6c264fce4442cef53c1a46c1487726b7a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking backtrace v0.3.7
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking brdgme-color v0.1.0 (https://github.com/brdgme/color.git#34fde167)
[INFO] [stderr]     Checking brdgme-markup v0.1.0 (https://github.com/brdgme/markup.git#aac7e8e8)
[INFO] [stderr]     Checking brdgme-game v0.1.0 (https://github.com/brdgme/game.git#4da0185a)
[INFO] [stderr]     Checking brdgme-cmd v0.1.0 (https://github.com/brdgme/cmd.git#b91ef50d)
[INFO] [stderr]     Checking brdgme-rand-bot v0.1.0 (https://github.com/brdgme/rand-bot.git#6de2d0ad)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rand-bot-af1d1d1547c99a64/6de2d0a/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[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 `brdgme-rand-bot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e85a8713f40104556ed5f40687e765c6c264fce4442cef53c1a46c1487726b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e85a8713f40104556ed5f40687e765c6c264fce4442cef53c1a46c1487726b7a", kill_on_drop: false }`
[INFO] [stdout] e85a8713f40104556ed5f40687e765c6c264fce4442cef53c1a46c1487726b7a