[INFO] cloning repository https://github.com/lambdabear/mqtt-sub-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lambdabear/mqtt-sub-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flambdabear%2Fmqtt-sub-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flambdabear%2Fmqtt-sub-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f91506c4884dcef820ea88c24420cf477fdc67e5
[INFO] documenting lambdabear/mqtt-sub-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%2Flambdabear%2Fmqtt-sub-client" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lambdabear/mqtt-sub-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/lambdabear/mqtt-sub-client
[INFO] finished tweaking git repo https://github.com/lambdabear/mqtt-sub-client
[INFO] tweaked toml for git repo https://github.com/lambdabear/mqtt-sub-client written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/lambdabear/mqtt-sub-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 37f3dcb20f67d89e5eb414fbcedfb98eece26bb28b71eab350d91d688617cb37
[INFO] running `Command { std: "docker" "start" "-a" "37f3dcb20f67d89e5eb414fbcedfb98eece26bb28b71eab350d91d688617cb37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37f3dcb20f67d89e5eb414fbcedfb98eece26bb28b71eab350d91d688617cb37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f3dcb20f67d89e5eb414fbcedfb98eece26bb28b71eab350d91d688617cb37", kill_on_drop: false }`
[INFO] [stdout] 37f3dcb20f67d89e5eb414fbcedfb98eece26bb28b71eab350d91d688617cb37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 279e2760b170fb177a34f6a739b8c6ad7dbdbbc16ec469a952e7e9c0bf1d9789
[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" "279e2760b170fb177a34f6a739b8c6ad7dbdbbc16ec469a952e7e9c0bf1d9789", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-threadpool v0.1.12
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.17
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking pretty_env_logger v0.2.5
[INFO] [stderr]     Checking mqtt311 v0.2.0
[INFO] [stderr]     Checking webpki v0.18.1
[INFO] [stderr]     Checking sct v0.4.0
[INFO] [stderr]     Checking jsonwebtoken v5.0.1
[INFO] [stderr]     Checking rustls v0.14.0
[INFO] [stderr]     Checking tokio-rustls v0.8.1
[INFO] [stderr]     Checking rumqtt v0.30.1
[INFO] [stderr]  Documenting mqtt-sub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.09s
[INFO] running `Command { std: "docker" "inspect" "279e2760b170fb177a34f6a739b8c6ad7dbdbbc16ec469a952e7e9c0bf1d9789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279e2760b170fb177a34f6a739b8c6ad7dbdbbc16ec469a952e7e9c0bf1d9789", kill_on_drop: false }`
[INFO] [stdout] 279e2760b170fb177a34f6a739b8c6ad7dbdbbc16ec469a952e7e9c0bf1d9789