[INFO] cloning repository https://github.com/Happy-Ferret/synapse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Happy-Ferret/synapse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappy-Ferret%2Fsynapse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappy-Ferret%2Fsynapse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac92bb424c3d7d99905f4c0988c924001b688080
[INFO] testing Happy-Ferret/synapse against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHappy-Ferret%2Fsynapse" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Happy-Ferret/synapse 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/Happy-Ferret/synapse
[INFO] finished tweaking git repo https://github.com/Happy-Ferret/synapse
[INFO] tweaked toml for git repo https://github.com/Happy-Ferret/synapse written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Happy-Ferret/synapse 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] warning: /workspace/builds/worker-9/source/Cargo.toml: `panic` setting is ignored for `bench` profile
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crypt32-sys v0.2.0
[INFO] [stderr]   Downloaded foreign-types v0.2.0
[INFO] [stderr]   Downloaded secur32-sys v0.2.0
[INFO] [stderr]   Downloaded lazycell v0.5.1
[INFO] [stderr]   Downloaded bytes v0.4.5
[INFO] [stderr]   Downloaded serde_derive v1.0.10
[INFO] [stderr]   Downloaded atty v0.2.2
[INFO] [stderr]   Downloaded reqwest v0.7.2
[INFO] [stderr]   Downloaded unicode-segmentation v1.2.0
[INFO] [stderr]   Downloaded backtrace v0.3.2
[INFO] [stderr]   Downloaded term_size v0.3.0
[INFO] [stderr]   Downloaded metadeps v1.1.2
[INFO] [stderr]   Downloaded itertools v0.6.1
[INFO] [stderr]   Downloaded mio v0.6.10
[INFO] [stderr]   Downloaded base32 v0.3.1
[INFO] [stderr]   Downloaded untrusted v0.5.0
[INFO] [stderr]   Downloaded bincode v0.8.0
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded net2 v0.2.30
[INFO] [stderr]   Downloaded percent-encoding v1.0.0
[INFO] [stderr]   Downloaded prettytable-rs v0.6.7
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded backtrace-sys v0.1.11
[INFO] [stderr]   Downloaded vcpkg v0.2.2
[INFO] [stderr]   Downloaded futures-cpupool v0.1.5
[INFO] [stderr]   Downloaded hyper-tls v0.1.2
[INFO] [stderr]   Downloaded hyper v0.10.12
[INFO] [stderr]   Downloaded websocket v0.20.2
[INFO] [stderr]   Downloaded take_mut v0.1.3
[INFO] [stderr]   Downloaded c-types v1.1.1
[INFO] [stderr]   Downloaded advapi32-sys v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.26
[INFO] [stderr]   Downloaded slog-async v2.0.1
[INFO] [stderr]   Downloaded signal v0.3.2
[INFO] [stderr]   Downloaded tokio-io v0.1.3
[INFO] [stderr]   Downloaded native-tls v0.1.4
[INFO] [stderr]   Downloaded slog-term v2.0.2
[INFO] [stderr]   Downloaded tempdir v0.3.5
[INFO] [stderr]   Downloaded tokio-core v0.1.9
[INFO] [stderr]   Downloaded c-ares v2.0.0
[INFO] [stderr]   Downloaded slog v2.0.6
[INFO] [stderr]   Downloaded serde v1.0.10
[INFO] [stderr]   Downloaded url v1.5.1
[INFO] [stderr]   Downloaded hyper v0.11.2
[INFO] [stderr]   Downloaded isatty v0.1.3
[INFO] [stderr]   Downloaded clap v2.26.0
[INFO] [stderr]   Downloaded encode_unicode v0.3.1
[INFO] [stderr]   Downloaded textwrap v0.7.0
[INFO] [stderr]   Downloaded mime v0.3.3
[INFO] [stderr]   Downloaded adler32 v1.0.1
[INFO] [stderr]   Downloaded csv v0.15.0
[INFO] [stderr]   Downloaded unicase v2.0.0
[INFO] [stderr]   Downloaded httparse v1.2.3
[INFO] [stderr]   Downloaded libflate v0.1.11
[INFO] [stderr]   Downloaded tokio-tls v0.1.3
[INFO] [stderr]   Downloaded redox_syscall v0.1.26
[INFO] [stderr]   Downloaded openssl-sys v0.9.17
[INFO] [stderr]   Downloaded schannel v0.1.7
[INFO] [stderr]   Downloaded openssl v0.9.17
[INFO] [stderr]   Downloaded amy v0.8.1
[INFO] [stderr]   Downloaded c-ares-sys v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 77b1933264b9cdfc1acf2bd0f60fda507c1aa95873de88d5f48eaf73a7996c16
[INFO] running `Command { std: "docker" "start" "-a" "77b1933264b9cdfc1acf2bd0f60fda507c1aa95873de88d5f48eaf73a7996c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b1933264b9cdfc1acf2bd0f60fda507c1aa95873de88d5f48eaf73a7996c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b1933264b9cdfc1acf2bd0f60fda507c1aa95873de88d5f48eaf73a7996c16", kill_on_drop: false }`
[INFO] [stdout] 77b1933264b9cdfc1acf2bd0f60fda507c1aa95873de88d5f48eaf73a7996c16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] e03cc205f2e902027cbc0f5f5f507b0560e987a05cf5140637cce36986619813
[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" "e03cc205f2e902027cbc0f5f5f507b0560e987a05cf5140637cce36986619813", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: `panic` setting is ignored for `bench` profile
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling serde v1.0.10
[INFO] [stderr]    Compiling num-traits v0.2.0-git (https://github.com/rust-num/num?branch=next#eec5f575)
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling slog v2.0.6
[INFO] [stderr]    Compiling take_mut v0.1.3
[INFO] [stderr]    Compiling untrusted v0.5.0
[INFO] [stderr]    Compiling base32 v0.3.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling itertools v0.6.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling c-types v1.1.1
[INFO] [stderr]    Compiling isatty v0.1.3
[INFO] [stderr]    Compiling net2 v0.2.30
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling slog-async v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling num-integer v0.2.0-git (https://github.com/rust-num/num?branch=next#eec5f575)
[INFO] [stderr]    Compiling num-iter v0.2.0-git (https://github.com/rust-num/num?branch=next#eec5f575)
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.10
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling rayon v0.7.1
[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-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 251 |     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" "e03cc205f2e902027cbc0f5f5f507b0560e987a05cf5140637cce36986619813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03cc205f2e902027cbc0f5f5f507b0560e987a05cf5140637cce36986619813", kill_on_drop: false }`
[INFO] [stdout] e03cc205f2e902027cbc0f5f5f507b0560e987a05cf5140637cce36986619813