[INFO] cloning repository https://github.com/stevebob/four-button-roguelike
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevebob/four-button-roguelike" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Ffour-button-roguelike", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Ffour-button-roguelike'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eed78e3c2a943240168d4398899a07fc0cda7d9
[INFO] documenting stevebob/four-button-roguelike 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%2Fstevebob%2Ffour-button-roguelike" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevebob/four-button-roguelike 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/stevebob/four-button-roguelike
[INFO] finished tweaking git repo https://github.com/stevebob/four-button-roguelike
[INFO] tweaked toml for git repo https://github.com/stevebob/four-button-roguelike written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/stevebob/four-button-roguelike 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 serde_derive_internals v0.18.0
[INFO] [stderr]   Downloaded num-traits v0.1.41
[INFO] [stderr]   Downloaded cgmath v0.15.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.32
[INFO] [stderr]   Downloaded tera v0.10.10
[INFO] [stderr]   Downloaded url v1.6.0
[INFO] [stderr]   Downloaded num-complex v0.1.41
[INFO] [stderr]   Downloaded error-chain v0.10.0
[INFO] [stderr]   Downloaded pest v0.4.1
[INFO] [stderr]   Downloaded serde v1.0.24
[INFO] [stderr]   Downloaded num-bigint v0.1.41
[INFO] [stderr]   Downloaded libc v0.2.34
[INFO] [stderr]   Downloaded num-rational v0.1.40
[INFO] [stderr]   Downloaded entity_store_helper v0.2.0
[INFO] [stderr]   Downloaded unidecode v0.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.24
[INFO] [stderr]   Downloaded serde_json v1.0.8
[INFO] [stderr]   Downloaded slug v0.1.2
[INFO] [stderr]   Downloaded itertools v0.7.4
[INFO] [stderr]   Downloaded humansize v1.0.2
[INFO] [stderr]   Downloaded cc v1.0.3
[INFO] [stderr]   Downloaded entity_store_code_gen v0.2.3
[INFO] [stderr]   Downloaded backtrace v0.3.4
[INFO] [stderr]   Downloaded direction v0.1.0
[INFO] [stderr]   Downloaded regex v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 1236aa0a59cecd1d09fe123df804c6194ddee541aec625a7f081cd5e1cf9977b
[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" "1236aa0a59cecd1d09fe123df804c6194ddee541aec625a7f081cd5e1cf9977b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1236aa0a59cecd1d09fe123df804c6194ddee541aec625a7f081cd5e1cf9977b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1236aa0a59cecd1d09fe123df804c6194ddee541aec625a7f081cd5e1cf9977b", kill_on_drop: false }`
[INFO] [stdout] 1236aa0a59cecd1d09fe123df804c6194ddee541aec625a7f081cd5e1cf9977b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d2149cfc8702789fcbcb5f40a519915f2bc4e7d7fac571993af51ac38157e6d2
[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" "d2149cfc8702789fcbcb5f40a519915f2bc4e7d7fac571993af51ac38157e6d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling unidecode v0.2.0
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling pest v0.4.1
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling humansize v1.0.2
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling itertools v0.7.4
[INFO] [stderr]    Compiling backtrace v0.3.4
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling slug v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]    Compiling url v1.6.0
[INFO] [stderr]     Checking num v0.1.41
[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-1.6.0/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" "d2149cfc8702789fcbcb5f40a519915f2bc4e7d7fac571993af51ac38157e6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2149cfc8702789fcbcb5f40a519915f2bc4e7d7fac571993af51ac38157e6d2", kill_on_drop: false }`
[INFO] [stdout] d2149cfc8702789fcbcb5f40a519915f2bc4e7d7fac571993af51ac38157e6d2