[INFO] cloning repository https://github.com/av-elier/ar-hist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/av-elier/ar-hist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fav-elier%2Far-hist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fav-elier%2Far-hist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b74e78a8f86c3e68b89bf236f208aaa00d50bfd1
[INFO] testing av-elier/ar-hist against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fav-elier%2Far-hist" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/av-elier/ar-hist on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/av-elier/ar-hist
[INFO] finished tweaking git repo https://github.com/av-elier/ar-hist
[INFO] tweaked toml for git repo https://github.com/av-elier/ar-hist written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/av-elier/ar-hist already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fallible-iterator v0.1.4
[INFO] [stderr]   Downloaded hyper v0.11.16
[INFO] [stderr]   Downloaded wincolor v0.1.5
[INFO] [stderr]   Downloaded postgres v0.15.1
[INFO] [stderr]   Downloaded postgres-shared v0.4.0
[INFO] [stderr]   Downloaded postgres-protocol v0.3.1
[INFO] [stderr]   Downloaded clap v2.29.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c53e41ba347e0d318c94c236cf15a9961a495411ae549b9bc0e8f45e91ad8f4
[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" "2c53e41ba347e0d318c94c236cf15a9961a495411ae549b9bc0e8f45e91ad8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c53e41ba347e0d318c94c236cf15a9961a495411ae549b9bc0e8f45e91ad8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c53e41ba347e0d318c94c236cf15a9961a495411ae549b9bc0e8f45e91ad8f4", kill_on_drop: false }`
[INFO] [stdout] 2c53e41ba347e0d318c94c236cf15a9961a495411ae549b9bc0e8f45e91ad8f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTFLAGS=--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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab9672812802db9e0969f6aaacf8c0dcd704cb3cff7076bf9e283db3af9f9d3d
[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" "ab9672812802db9e0969f6aaacf8c0dcd704cb3cff7076bf9e283db3af9f9d3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.18
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling md5 v0.3.7
[INFO] [stderr]    Compiling fallible-iterator v0.1.4
[INFO] [stderr]    Compiling openssl v0.9.23
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling termcolor v0.3.3
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand v0.3.20
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling openssl-sys v0.9.24
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.9.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling clap v2.29.3
[INFO] [stderr]    Compiling url v1.6.0
[INFO] [stderr]    Compiling mio v0.6.12
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling sha2 v0.6.0
[INFO] [stderr]    Compiling num-iter v0.1.34
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ab9672812802db9e0969f6aaacf8c0dcd704cb3cff7076bf9e283db3af9f9d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab9672812802db9e0969f6aaacf8c0dcd704cb3cff7076bf9e283db3af9f9d3d", kill_on_drop: false }`
[INFO] [stdout] ab9672812802db9e0969f6aaacf8c0dcd704cb3cff7076bf9e283db3af9f9d3d