[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 1.46.0 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-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bungcip/rust-placebot 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/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-12/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" "+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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ac1f328548468806c900c16574cc72c4a7907536f5063464747b6b67d19a31bf
[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" "ac1f328548468806c900c16574cc72c4a7907536f5063464747b6b67d19a31bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1f328548468806c900c16574cc72c4a7907536f5063464747b6b67d19a31bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1f328548468806c900c16574cc72c4a7907536f5063464747b6b67d19a31bf", kill_on_drop: false }`
[INFO] [stdout] ac1f328548468806c900c16574cc72c4a7907536f5063464747b6b67d19a31bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] a1d8daa90293f7a58b8d5bebe426111d01449355fae4e13a96fd3e1b4b445b56
[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" "a1d8daa90293f7a58b8d5bebe426111d01449355fae4e13a96fd3e1b4b445b56", 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]    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 rand v0.3.15
[INFO] [stderr]     Checking mime v0.2.3
[INFO] [stderr]     Checking libflate v0.1.4
[INFO] [stderr]    Compiling hyper v0.10.5
[INFO] [stderr]     Checking bmp v0.2.0
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]    Compiling syn v0.11.9
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a1d8daa90293f7a58b8d5bebe426111d01449355fae4e13a96fd3e1b4b445b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1d8daa90293f7a58b8d5bebe426111d01449355fae4e13a96fd3e1b4b445b56", kill_on_drop: false }`
[INFO] [stdout] a1d8daa90293f7a58b8d5bebe426111d01449355fae4e13a96fd3e1b4b445b56