[INFO] cloning repository https://github.com/blockexplorer/haproxy-alert
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blockexplorer/haproxy-alert" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblockexplorer%2Fhaproxy-alert", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblockexplorer%2Fhaproxy-alert'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64ee216826fb07e46d2a7ac59467a36b339e0218
[INFO] documenting blockexplorer/haproxy-alert 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%2Fblockexplorer%2Fhaproxy-alert" "/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/blockexplorer/haproxy-alert 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/blockexplorer/haproxy-alert
[INFO] finished tweaking git repo https://github.com/blockexplorer/haproxy-alert
[INFO] tweaked toml for git repo https://github.com/blockexplorer/haproxy-alert written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/blockexplorer/haproxy-alert 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-core v0.1.17
[INFO] [stderr]   Downloaded serde_derive v1.0.43
[INFO] [stderr]   Downloaded base64 v0.9.1
[INFO] [stderr]   Downloaded backtrace v0.3.6
[INFO] [stderr]   Downloaded serde_json v1.0.16
[INFO] [stderr]   Downloaded envy v0.3.2
[INFO] [stderr]   Downloaded schannel v0.1.12
[INFO] [stderr]   Downloaded openssl-sys v0.9.28
[INFO] [stderr]   Downloaded cc v1.0.14
[INFO] [stderr]   Downloaded bytes v0.4.7
[INFO] [stderr]   Downloaded reqwest v0.7.3
[INFO] [stderr]   Downloaded syn v0.13.4
[INFO] [stderr]   Downloaded vcpkg v0.2.3
[INFO] [stderr]   Downloaded url_serde v0.2.0
[INFO] [stderr]   Downloaded slack-hook v0.6.0
[INFO] [stderr]   Downloaded serde v1.0.43
[INFO] [stderr]   Downloaded hyper v0.11.25
[INFO] [stderr]   Downloaded hyper-tls v0.1.3
[INFO] [stderr]   Downloaded chrono v0.4.2
[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] dca0e35283ddaac487d9fe95cb8321000956a26911bbd474022478626cff0cfa
[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" "dca0e35283ddaac487d9fe95cb8321000956a26911bbd474022478626cff0cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dca0e35283ddaac487d9fe95cb8321000956a26911bbd474022478626cff0cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dca0e35283ddaac487d9fe95cb8321000956a26911bbd474022478626cff0cfa", kill_on_drop: false }`
[INFO] [stdout] dca0e35283ddaac487d9fe95cb8321000956a26911bbd474022478626cff0cfa
[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] f2d5dc4274dab2f2a6c2c63ea28ed858f23c622ce44c8515358ed5fe18358b4f
[INFO] running `Command { std: "docker" "start" "-a" "f2d5dc4274dab2f2a6c2c63ea28ed858f23c622ce44c8515358ed5fe18358b4f", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.14
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking serde v1.0.43
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking smtpd v0.1.0 (https://github.com/gkbrk/rust-smtpd#d20ed0cc)
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking libflate v0.1.14
[INFO] [stderr]     Checking crossbeam-deque v0.3.0
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stdout]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[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 E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `url`.
[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" "f2d5dc4274dab2f2a6c2c63ea28ed858f23c622ce44c8515358ed5fe18358b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2d5dc4274dab2f2a6c2c63ea28ed858f23c622ce44c8515358ed5fe18358b4f", kill_on_drop: false }`
[INFO] [stdout] f2d5dc4274dab2f2a6c2c63ea28ed858f23c622ce44c8515358ed5fe18358b4f