[INFO] cloning repository https://github.com/mateuszptr/rust_dhcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mateuszptr/rust_dhcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmateuszptr%2Frust_dhcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmateuszptr%2Frust_dhcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fefc0f07e07959e9c20d6a16978c7e5c4280f79f
[INFO] checking mateuszptr/rust_dhcp against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmateuszptr%2Frust_dhcp" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mateuszptr/rust_dhcp on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mateuszptr/rust_dhcp
[INFO] finished tweaking git repo https://github.com/mateuszptr/rust_dhcp
[INFO] tweaked toml for git repo https://github.com/mateuszptr/rust_dhcp written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mateuszptr/rust_dhcp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0b4e0e237f5e7cf37720d0558d7d9cbcc7285ae88258d0ba484a5fb0dd54de9
[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" "b0b4e0e237f5e7cf37720d0558d7d9cbcc7285ae88258d0ba484a5fb0dd54de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0b4e0e237f5e7cf37720d0558d7d9cbcc7285ae88258d0ba484a5fb0dd54de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0b4e0e237f5e7cf37720d0558d7d9cbcc7285ae88258d0ba484a5fb0dd54de9", kill_on_drop: false }`
[INFO] [stdout] b0b4e0e237f5e7cf37720d0558d7d9cbcc7285ae88258d0ba484a5fb0dd54de9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 052d35181040864f72b1a2c8ee9793f01bbd0dbdf2fa69142b4cba22896547ce
[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" "052d35181040864f72b1a2c8ee9793f01bbd0dbdf2fa69142b4cba22896547ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.60
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.21
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking tokio-timer v0.2.3
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]    Compiling serde_derive v1.0.60
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]    Compiling libflate v0.1.15
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.1.3
[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]    Compiling openssl v0.9.24
[INFO] [stderr] error: could not compile `url`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "052d35181040864f72b1a2c8ee9793f01bbd0dbdf2fa69142b4cba22896547ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "052d35181040864f72b1a2c8ee9793f01bbd0dbdf2fa69142b4cba22896547ce", kill_on_drop: false }`
[INFO] [stdout] 052d35181040864f72b1a2c8ee9793f01bbd0dbdf2fa69142b4cba22896547ce