[INFO] cloning repository https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintrepion%2Fproject-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintrepion%2Fproject-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 508bb3a0c1fa45ff05bfdd8059a9698337531fd4
[INFO] documenting intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket 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%2Fintrepion%2Fproject-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket 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/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket
[INFO] finished tweaking git repo https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket
[INFO] tweaked toml for git repo https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/intrepion/project-x-rock-paper-scissors-x-json-rpc-x-server-x-rust-x-rocket 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b25de50e5583a299995b082d6b2ede41d6b6bbfbfc816b06ec26c33a0f56819
[INFO] running `Command { std: "docker" "start" "-a" "5b25de50e5583a299995b082d6b2ede41d6b6bbfbfc816b06ec26c33a0f56819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b25de50e5583a299995b082d6b2ede41d6b6bbfbfc816b06ec26c33a0f56819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b25de50e5583a299995b082d6b2ede41d6b6bbfbfc816b06ec26c33a0f56819", kill_on_drop: false }`
[INFO] [stdout] 5b25de50e5583a299995b082d6b2ede41d6b6bbfbfc816b06ec26c33a0f56819
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 1675dc4c8882046a1837315717159a8c4e7819938fdd5cf384452f55af4a3f82
[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" "1675dc4c8882046a1837315717159a8c4e7819938fdd5cf384452f55af4a3f82", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]    Compiling quote v0.3.10
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking serde v0.8.21
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling rocket_codegen v0.1.4
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.4/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_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 `rocket_codegen`.
[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" "1675dc4c8882046a1837315717159a8c4e7819938fdd5cf384452f55af4a3f82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1675dc4c8882046a1837315717159a8c4e7819938fdd5cf384452f55af4a3f82", kill_on_drop: false }`
[INFO] [stdout] 1675dc4c8882046a1837315717159a8c4e7819938fdd5cf384452f55af4a3f82