[INFO] cloning repository https://github.com/cesare/rust-msgpack-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cesare/rust-msgpack-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcesare%2Frust-msgpack-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcesare%2Frust-msgpack-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f055a936d122a532eff862b2724c54bd5714c95
[INFO] documenting cesare/rust-msgpack-experiments 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%2Fcesare%2Frust-msgpack-experiments" "/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/cesare/rust-msgpack-experiments 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/cesare/rust-msgpack-experiments
[INFO] finished tweaking git repo https://github.com/cesare/rust-msgpack-experiments
[INFO] tweaked toml for git repo https://github.com/cesare/rust-msgpack-experiments written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cesare/rust-msgpack-experiments 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-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] 737cd0c0627bc518ce3a81a095487f9b09fa93c0819eb0f4142e940626061c6a
[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" "737cd0c0627bc518ce3a81a095487f9b09fa93c0819eb0f4142e940626061c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "737cd0c0627bc518ce3a81a095487f9b09fa93c0819eb0f4142e940626061c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737cd0c0627bc518ce3a81a095487f9b09fa93c0819eb0f4142e940626061c6a", kill_on_drop: false }`
[INFO] [stdout] 737cd0c0627bc518ce3a81a095487f9b09fa93c0819eb0f4142e940626061c6a
[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] 056f54edde39255804473cc4221872a6f58be4c927aef249de702f85aa94676d
[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" "056f54edde39255804473cc4221872a6f58be4c927aef249de702f85aa94676d", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking serde v1.0.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rmp v0.8.6
[INFO] [stderr]    Compiling serde_derive_internals v0.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.4
[INFO] [stderr]     Checking rmp-serde v0.13.1
[INFO] [stdout] error: type `decode::SliceReader` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rmp-serde-0.13.1/src/lib.rs:285:18
[INFO] [stdout]     |
[INFO] [stdout] 285 |     let mut de = Deserializer::from_slice(input);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rmp-serde`.
[INFO] [stdout] error: type `decode::SliceReader` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rmp-serde-0.13.1/src/lib.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 286 |     serde::Deserialize::deserialize(&mut de)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: type `decode::SliceReader` is private
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rmp-serde-0.13.1/src/lib.rs:286:37
[INFO] [stdout]     |
[INFO] [stdout] 286 |     serde::Deserialize::deserialize(&mut de)
[INFO] [stdout]     |                                     ^^^^^^^ private type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "056f54edde39255804473cc4221872a6f58be4c927aef249de702f85aa94676d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "056f54edde39255804473cc4221872a6f58be4c927aef249de702f85aa94676d", kill_on_drop: false }`
[INFO] [stdout] 056f54edde39255804473cc4221872a6f58be4c927aef249de702f85aa94676d