[INFO] cloning repository https://github.com/MadWombat/rust-gfx-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MadWombat/rust-gfx-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadWombat%2Frust-gfx-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadWombat%2Frust-gfx-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fae1a60a584ddd28eb1726803fef72ef631894cc
[INFO] testing MadWombat/rust-gfx-experiments against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadWombat%2Frust-gfx-experiments" "/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/MadWombat/rust-gfx-experiments 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/MadWombat/rust-gfx-experiments
[INFO] finished tweaking git repo https://github.com/MadWombat/rust-gfx-experiments
[INFO] tweaked toml for git repo https://github.com/MadWombat/rust-gfx-experiments written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/MadWombat/rust-gfx-experiments 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 reqwest v0.7.3
[INFO] [stderr]   Downloaded approx v0.2.0
[INFO] [stderr]   Downloaded cmake v0.1.31
[INFO] [stderr]   Downloaded alga v0.6.0
[INFO] [stderr]   Downloaded serde_json v1.0.19
[INFO] [stderr]   Downloaded openssl-sys v0.9.32
[INFO] [stderr]   Downloaded rand v0.5.1
[INFO] [stderr]   Downloaded nalgebra v0.15.3
[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" "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] 96c009afa45a019f3765df2b20ca0a352d9af645eefe54db2b2e352a3d3e2262
[INFO] running `Command { std: "docker" "start" "-a" "96c009afa45a019f3765df2b20ca0a352d9af645eefe54db2b2e352a3d3e2262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96c009afa45a019f3765df2b20ca0a352d9af645eefe54db2b2e352a3d3e2262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c009afa45a019f3765df2b20ca0a352d9af645eefe54db2b2e352a3d3e2262", kill_on_drop: false }`
[INFO] [stdout] 96c009afa45a019f3765df2b20ca0a352d9af645eefe54db2b2e352a3d3e2262
[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" "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] c97b7df23849bbebaa62f3900f1e9acc9f28e85e1ec4939650f8764a73414e46
[INFO] running `Command { std: "docker" "start" "-a" "c97b7df23849bbebaa62f3900f1e9acc9f28e85e1ec4939650f8764a73414e46", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling adler32 v1.0.2
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling xattr v0.2.1
[INFO] [stderr]    Compiling tokio-executor v0.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.32
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling gif v0.10.0
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling mime v0.3.7
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.1
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling libflate v0.1.14
[INFO] [stderr]    Compiling inflate v0.4.2
[INFO] [stderr]    Compiling deflate v0.7.18
[INFO] [stderr]    Compiling tokio-timer v0.2.3
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling tar v0.4.15
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling flate2 v0.2.20
[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-1.7.0/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] [stderr]    Compiling backtrace v0.3.8
[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" "c97b7df23849bbebaa62f3900f1e9acc9f28e85e1ec4939650f8764a73414e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c97b7df23849bbebaa62f3900f1e9acc9f28e85e1ec4939650f8764a73414e46", kill_on_drop: false }`
[INFO] [stdout] c97b7df23849bbebaa62f3900f1e9acc9f28e85e1ec4939650f8764a73414e46