[INFO] cloning repository https://github.com/bungcip/rust-placebot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bungcip/rust-placebot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbungcip%2Frust-placebot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbungcip%2Frust-placebot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d909cd5b476cb412ea0905296bda94d8092cbbe2
[INFO] documenting bungcip/rust-placebot 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%2Fbungcip%2Frust-placebot" "/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/bungcip/rust-placebot 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/bungcip/rust-placebot
[INFO] finished tweaking git repo https://github.com/bungcip/rust-placebot
[INFO] tweaked toml for git repo https://github.com/bungcip/rust-placebot written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/bungcip/rust-placebot 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 rustc-demangle v0.1.4
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded cfg-if v0.1.0
[INFO] [stderr]   Downloaded backtrace v0.3.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.10
[INFO] [stderr]   Downloaded serde_codegen_internals v0.14.2
[INFO] [stderr]   Downloaded syn v0.11.9
[INFO] [stderr]   Downloaded num_cpus v1.3.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.17
[INFO] [stderr]   Downloaded lazy_static v0.2.6
[INFO] [stderr]   Downloaded libc v0.2.21
[INFO] [stderr]   Downloaded url v1.4.0
[INFO] [stderr]   Downloaded serde_urlencoded v0.4.2
[INFO] [stderr]   Downloaded log v0.3.7
[INFO] [stderr]   Downloaded rustc-serialize v0.3.23
[INFO] [stderr]   Downloaded gcc v0.3.45
[INFO] [stderr]   Downloaded schannel v0.1.4
[INFO] [stderr]   Downloaded hyper-native-tls v0.2.2
[INFO] [stderr]   Downloaded unicode-bidi v0.2.5
[INFO] [stderr]   Downloaded serde v0.9.12
[INFO] [stderr]   Downloaded serde_json v0.9.9
[INFO] [stderr]   Downloaded serde_derive v0.9.12
[INFO] [stderr]   Downloaded error-chain v0.10.0
[INFO] [stderr]   Downloaded mime v0.2.3
[INFO] [stderr]   Downloaded hyper v0.10.5
[INFO] [stderr]   Downloaded reqwest v0.5.0
[INFO] [stderr]   Downloaded libflate v0.1.4
[INFO] [stderr]   Downloaded openssl-sys v0.9.10
[INFO] [stderr]   Downloaded toml v0.3.2
[INFO] [stderr]   Downloaded bmp v0.2.0
[INFO] [stderr]   Downloaded openssl v0.9.10
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c010e511b5c0d594b0a7173c3cb85f17a32fb3b876f1300fba6a816f90e3f643
[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" "c010e511b5c0d594b0a7173c3cb85f17a32fb3b876f1300fba6a816f90e3f643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c010e511b5c0d594b0a7173c3cb85f17a32fb3b876f1300fba6a816f90e3f643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c010e511b5c0d594b0a7173c3cb85f17a32fb3b876f1300fba6a816f90e3f643", kill_on_drop: false }`
[INFO] [stdout] c010e511b5c0d594b0a7173c3cb85f17a32fb3b876f1300fba6a816f90e3f643
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff366791209a392758bee14e9c03024a167facc5a71fdf146d5a01ecb0e86667
[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" "ff366791209a392758bee14e9c03024a167facc5a71fdf146d5a01ecb0e86667", 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]    Compiling openssl v0.9.10
[INFO] [stderr]     Checking lazy_static v0.2.6
[INFO] [stderr]     Checking serde v0.9.12
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]    Compiling openssl-sys v0.9.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.10
[INFO] [stderr]     Checking num_cpus v1.3.0
[INFO] [stderr]     Checking mime v0.2.3
[INFO] [stderr]    Compiling hyper v0.10.5
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]     Checking bmp v0.2.0
[INFO] [stderr]     Checking url v1.4.0
[INFO] [stderr]     Checking libflate v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stdout] error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libflate-0.1.4/src/gzip.rs:444:66
[INFO] [stdout]     |
[INFO] [stdout] 444 |         try!(writer.write_u16::<LittleEndian>(self.data.len() as u16()));
[INFO] [stdout]     |                                                                  ^^^^^ only `Fn` traits may use parentheses
[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 E0214`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libflate`.
[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] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.0/src/form_urlencoded.rs:246:40
[INFO] [stdout]     |
[INFO] [stdout] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 246 |     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: build failed
[INFO] running `Command { std: "docker" "inspect" "ff366791209a392758bee14e9c03024a167facc5a71fdf146d5a01ecb0e86667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff366791209a392758bee14e9c03024a167facc5a71fdf146d5a01ecb0e86667", kill_on_drop: false }`
[INFO] [stdout] ff366791209a392758bee14e9c03024a167facc5a71fdf146d5a01ecb0e86667