[INFO] cloning repository https://github.com/sstelfox/actix-background-worker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sstelfox/actix-background-worker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstelfox%2Factix-background-worker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstelfox%2Factix-background-worker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d96d8e296daa1f40ba1b05ce5a55074094300c5
[INFO] testing sstelfox/actix-background-worker against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstelfox%2Factix-background-worker" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sstelfox/actix-background-worker 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/sstelfox/actix-background-worker
[INFO] finished tweaking git repo https://github.com/sstelfox/actix-background-worker
[INFO] tweaked toml for git repo https://github.com/sstelfox/actix-background-worker written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sstelfox/actix-background-worker 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] ddb830f3b0addf5114a0d63c6fbf45d79846cf31d907d2cbbc3ab7dfb587bf24
[INFO] running `Command { std: "docker" "start" "-a" "ddb830f3b0addf5114a0d63c6fbf45d79846cf31d907d2cbbc3ab7dfb587bf24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddb830f3b0addf5114a0d63c6fbf45d79846cf31d907d2cbbc3ab7dfb587bf24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddb830f3b0addf5114a0d63c6fbf45d79846cf31d907d2cbbc3ab7dfb587bf24", kill_on_drop: false }`
[INFO] [stdout] ddb830f3b0addf5114a0d63c6fbf45d79846cf31d907d2cbbc3ab7dfb587bf24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9e6c34d3921f64a2e20dbc8281f47a5759b2c207af895f74b77f63638fea6dcb
[INFO] running `Command { std: "docker" "start" "-a" "9e6c34d3921f64a2e20dbc8281f47a5759b2c207af895f74b77f63638fea6dcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.0
[INFO] [stderr]    Compiling bytecount v0.3.1
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling http-range v0.1.1
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]    Compiling actix-web v0.6.14
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling serde v1.0.68
[INFO] [stderr]    Compiling resolv-conf v0.6.1
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling http v0.1.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling tokio-threadpool v0.1.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling error-chain v0.11.0
[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] [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" "9e6c34d3921f64a2e20dbc8281f47a5759b2c207af895f74b77f63638fea6dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e6c34d3921f64a2e20dbc8281f47a5759b2c207af895f74b77f63638fea6dcb", kill_on_drop: false }`
[INFO] [stdout] 9e6c34d3921f64a2e20dbc8281f47a5759b2c207af895f74b77f63638fea6dcb