[INFO] cloning repository https://github.com/crossdot/rust_ssr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crossdot/rust_ssr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrossdot%2Frust_ssr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrossdot%2Frust_ssr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48cac0979b723c908700ceefea989dd3a25e5bbe
[INFO] documenting crossdot/rust_ssr against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrossdot%2Frust_ssr" "/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/crossdot/rust_ssr on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crossdot/rust_ssr
[INFO] finished tweaking git repo https://github.com/crossdot/rust_ssr
[INFO] tweaked toml for git repo https://github.com/crossdot/rust_ssr written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/crossdot/rust_ssr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futf v0.1.3
[INFO] [stderr]   Downloaded utf-8 v0.7.1
[INFO] [stderr]   Downloaded tendril v0.3.1
[INFO] [stderr]   Downloaded string_cache v0.2.29
[INFO] [stderr]   Downloaded quickersort v2.2.0
[INFO] [stderr]   Downloaded ego-tree v0.1.1
[INFO] [stderr]   Downloaded route-recognizer v0.1.12
[INFO] [stderr]   Downloaded hyper v0.11.2
[INFO] [stderr]   Downloaded filetime v0.1.10
[INFO] [stderr]   Downloaded odds v0.2.25
[INFO] [stderr]   Downloaded select v0.4.2
[INFO] [stderr]   Downloaded html5ever v0.5.4
[INFO] [stderr]   Downloaded nodrop v0.1.9
[INFO] [stderr]   Downloaded smallvec v0.1.8
[INFO] [stderr]   Downloaded serde_derive v1.0.11
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.0
[INFO] [stderr]   Downloaded mount v0.3.0
[INFO] [stderr]   Downloaded staticfile v0.4.0
[INFO] [stderr]   Downloaded cssparser v0.5.8
[INFO] [stderr]   Downloaded fnv v1.0.5
[INFO] [stderr]   Downloaded selectors v0.5.9
[INFO] [stderr]   Downloaded html5ever v0.18.0
[INFO] [stderr]   Downloaded bit-set v0.4.0
[INFO] [stderr]   Downloaded string_cache v0.6.1
[INFO] [stderr]   Downloaded markup5ever v0.3.1
[INFO] [stderr]   Downloaded scraper v0.4.0
[INFO] [stderr]   Downloaded precomputed-hash v0.1.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.27
[INFO] [stderr]   Downloaded sequence_trie v0.2.1
[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" "+beta-2020-08-29" "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] 10a6c45ac65820bf5b61ae10b48b0e2b7bf29a7225e9ce4fb527fd165250ef11
[INFO] running `Command { std: "docker" "start" "-a" "10a6c45ac65820bf5b61ae10b48b0e2b7bf29a7225e9ce4fb527fd165250ef11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10a6c45ac65820bf5b61ae10b48b0e2b7bf29a7225e9ce4fb527fd165250ef11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a6c45ac65820bf5b61ae10b48b0e2b7bf29a7225e9ce4fb527fd165250ef11", kill_on_drop: false }`
[INFO] [stdout] 10a6c45ac65820bf5b61ae10b48b0e2b7bf29a7225e9ce4fb527fd165250ef11
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d105bdf24bc32a8381a89bd018532bb247caf0411f020cde84e3fedfb24994d
[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" "8d105bdf24bc32a8381a89bd018532bb247caf0411f020cde84e3fedfb24994d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.28
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking precomputed-hash v0.1.0
[INFO] [stderr]     Checking odds v0.2.25
[INFO] [stderr]     Checking sequence_trie v0.2.1
[INFO] [stderr]     Checking utf-8 v0.7.1
[INFO] [stderr]     Checking utf-8 v0.6.0
[INFO] [stderr]    Compiling unicase v2.0.0
[INFO] [stderr]     Checking cssparser v0.5.8
[INFO] [stderr]    Compiling html5ever v0.18.0
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking url v1.5.1
[INFO] [stderr]     Checking tendril v0.3.1
[INFO] [stderr]     Checking tendril v0.2.4
[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-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 251 |     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" "8d105bdf24bc32a8381a89bd018532bb247caf0411f020cde84e3fedfb24994d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d105bdf24bc32a8381a89bd018532bb247caf0411f020cde84e3fedfb24994d", kill_on_drop: false }`
[INFO] [stdout] 8d105bdf24bc32a8381a89bd018532bb247caf0411f020cde84e3fedfb24994d