[INFO] cloning repository https://github.com/mattcl/are-we-merged-yet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattcl/are-we-merged-yet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38880f502873c7c07b7feaff9b04e16aa51be2dd
[INFO] documenting mattcl/are-we-merged-yet against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattcl%2Fare-we-merged-yet" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattcl/are-we-merged-yet on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattcl/are-we-merged-yet
[INFO] finished tweaking git repo https://github.com/mattcl/are-we-merged-yet
[INFO] tweaked toml for git repo https://github.com/mattcl/are-we-merged-yet written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/mattcl/are-we-merged-yet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acf85e65e2f53a5fc87a316fde9670d8cb02d789c0365f5e4ae5f8500baaa232
[INFO] running `Command { std: "docker" "start" "-a" "acf85e65e2f53a5fc87a316fde9670d8cb02d789c0365f5e4ae5f8500baaa232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acf85e65e2f53a5fc87a316fde9670d8cb02d789c0365f5e4ae5f8500baaa232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf85e65e2f53a5fc87a316fde9670d8cb02d789c0365f5e4ae5f8500baaa232", kill_on_drop: false }`
[INFO] [stdout] acf85e65e2f53a5fc87a316fde9670d8cb02d789c0365f5e4ae5f8500baaa232
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 449c5398338d84a129e43a8e94174446de7ac84f2a1e456f7db5c00a2a52697e
[INFO] running `Command { std: "docker" "start" "-a" "449c5398338d84a129e43a8e94174446de7ac84f2a1e456f7db5c00a2a52697e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking openssl-probe v0.1.0
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking unicode-segmentation v1.0.1
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking encode_unicode v0.2.0
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling cmake v0.1.20
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]     Checking term v0.4.4
[INFO] [stderr]     Checking atty v0.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling libz-sys v1.0.10
[INFO] [stderr]    Compiling libssh2-sys v0.2.5
[INFO] [stderr]    Compiling curl-sys v0.3.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.6
[INFO] [stderr]     Checking csv v0.14.7
[INFO] [stderr]     Checking url v1.2.4
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking prettytable-rs v0.6.6
[INFO] [stderr]    Compiling metadeps v1.1.1
[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-1.2.4/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: 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" "449c5398338d84a129e43a8e94174446de7ac84f2a1e456f7db5c00a2a52697e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449c5398338d84a129e43a8e94174446de7ac84f2a1e456f7db5c00a2a52697e", kill_on_drop: false }`
[INFO] [stdout] 449c5398338d84a129e43a8e94174446de7ac84f2a1e456f7db5c00a2a52697e
