[INFO] cloning repository https://github.com/augustuswm/masquerade
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/augustuswm/masquerade" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustuswm%2Fmasquerade", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustuswm%2Fmasquerade'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d74a0973b490a557a43812eeb9554057667a9c0
[INFO] testing augustuswm/masquerade against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustuswm%2Fmasquerade" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/augustuswm/masquerade on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/augustuswm/masquerade
[INFO] finished tweaking git repo https://github.com/augustuswm/masquerade
[INFO] tweaked toml for git repo https://github.com/augustuswm/masquerade written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/augustuswm/masquerade already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4a88b13214bf89f5bd7e0676bcfd788bc26ab9b704e99116a858ae32e7c6ce6
[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" "c4a88b13214bf89f5bd7e0676bcfd788bc26ab9b704e99116a858ae32e7c6ce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4a88b13214bf89f5bd7e0676bcfd788bc26ab9b704e99116a858ae32e7c6ce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a88b13214bf89f5bd7e0676bcfd788bc26ab9b704e99116a858ae32e7c6ce6", kill_on_drop: false }`
[INFO] [stdout] c4a88b13214bf89f5bd7e0676bcfd788bc26ab9b704e99116a858ae32e7c6ce6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f38904fe8be097a0795756c1e6edd5cb91e5b9f8ede99686119b4d56d05581e2
[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" "f38904fe8be097a0795756c1e6edd5cb91e5b9f8ede99686119b4d56d05581e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling serde v1.0.52
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling string v0.1.0
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling hostname v0.1.4
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling tokio-executor v0.1.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling ring v0.13.2
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling socket2 v0.3.5
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling actix-web v0.7.8
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling uuid v0.6.3
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.0
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling resolv-conf v0.6.0
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling bytes v0.4.7
[INFO] [stderr]    Compiling base64 v0.9.1
[INFO] [stderr]    Compiling tokio-timer v0.2.5
[INFO] [stderr]    Compiling tokio-current-thread v0.1.3
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling tokio-io v0.1.9
[INFO] [stderr]    Compiling http v0.1.13
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[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 tokio-threadpool v0.1.7
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling quote v0.6.8
[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" "f38904fe8be097a0795756c1e6edd5cb91e5b9f8ede99686119b4d56d05581e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f38904fe8be097a0795756c1e6edd5cb91e5b9f8ede99686119b4d56d05581e2", kill_on_drop: false }`
[INFO] [stdout] f38904fe8be097a0795756c1e6edd5cb91e5b9f8ede99686119b4d56d05581e2