[INFO] cloning repository https://github.com/byw/rust_client_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/byw/rust_client_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbyw%2Frust_client_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbyw%2Frust_client_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3e39e9d457fe9eeded7262dfc6079c425bef3e8
[INFO] testing byw/rust_client_server against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbyw%2Frust_client_server" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/byw/rust_client_server 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/byw/rust_client_server
[INFO] finished tweaking git repo https://github.com/byw/rust_client_server
[INFO] tweaked toml for git repo https://github.com/byw/rust_client_server written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/byw/rust_client_server 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 proc-macro2 v0.3.6
[INFO] [stderr]   Downloaded serde v1.0.38
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded slug v0.1.2
[INFO] [stderr]   Downloaded regex-syntax v0.5.5
[INFO] [stderr]   Downloaded rustc-demangle v0.1.7
[INFO] [stderr]   Downloaded num-integer v0.1.36
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded dotenv v0.9.0
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded dotenv v0.8.0
[INFO] [stderr]   Downloaded rocket_codegen v0.3.8
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.0
[INFO] [stderr]   Downloaded yansi v0.4.0
[INFO] [stderr]   Downloaded libc v0.2.40
[INFO] [stderr]   Downloaded unidecode v0.2.0
[INFO] [stderr]   Downloaded humansize v1.1.0
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.2.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.16
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.0
[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded pear v0.0.16
[INFO] [stderr]   Downloaded handlebars v0.28.3
[INFO] [stderr]   Downloaded state v0.4.0
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded diesel_derives v1.2.0
[INFO] [stderr]   Downloaded dotenv_codegen_impl v0.1.0
[INFO] [stderr]   Downloaded cc v1.0.10
[INFO] [stderr]   Downloaded isatty v0.1.7
[INFO] [stderr]   Downloaded backtrace v0.3.6
[INFO] [stderr]   Downloaded quick-error v1.2.1
[INFO] [stderr]   Downloaded tera v0.10.10
[INFO] [stderr]   Downloaded pest v0.4.1
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded dotenv_codegen v0.11.0
[INFO] [stderr]   Downloaded proc-macro2 v0.2.3
[INFO] [stderr]   Downloaded r2d2 v0.8.2
[INFO] [stderr]   Downloaded pq-sys v0.4.4
[INFO] [stderr]   Downloaded byteorder v1.2.2
[INFO] [stderr]   Downloaded quote v0.4.2
[INFO] [stderr]   Downloaded pear_codegen v0.0.16
[INFO] [stderr]   Downloaded rocket v0.3.8
[INFO] [stderr]   Downloaded diesel v1.2.2
[INFO] [stderr]   Downloaded serde_derive v1.0.38
[INFO] [stderr]   Downloaded vcpkg v0.2.3
[INFO] [stderr]   Downloaded antidote v1.0.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.1
[INFO] [stderr]   Downloaded rocket_contrib v0.3.8
[INFO] [stderr]   Downloaded serde_json v1.0.14
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 28c44cd78ecf1faffecab39905d7519d3a510eb512501a5cc00aa4f485842e6d
[INFO] running `Command { std: "docker" "start" "-a" "28c44cd78ecf1faffecab39905d7519d3a510eb512501a5cc00aa4f485842e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28c44cd78ecf1faffecab39905d7519d3a510eb512501a5cc00aa4f485842e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c44cd78ecf1faffecab39905d7519d3a510eb512501a5cc00aa4f485842e6d", kill_on_drop: false }`
[INFO] [stdout] 28c44cd78ecf1faffecab39905d7519d3a510eb512501a5cc00aa4f485842e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 6b3ff3ac42ad3239541a1b2f567eb83108680e57c859ba2bc148141a6e30023a
[INFO] running `Command { std: "docker" "start" "-a" "6b3ff3ac42ad3239541a1b2f567eb83108680e57c859ba2bc148141a6e30023a", kill_on_drop: false }`
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling serde v1.0.38
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling pq-sys v0.4.4
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling pear v0.0.16
[INFO] [stderr]    Compiling unidecode v0.2.0
[INFO] [stderr]    Compiling state v0.4.0
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling smallvec v0.4.4
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]    Compiling pest v0.4.1
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling isatty v0.1.7
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling regex-syntax v0.5.5
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling pear_codegen v0.0.16
[INFO] [stderr]    Compiling rocket v0.3.8
[INFO] [stderr]    Compiling rocket_codegen v0.3.8
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling r2d2 v0.8.2
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling chrono v0.4.2
[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" "6b3ff3ac42ad3239541a1b2f567eb83108680e57c859ba2bc148141a6e30023a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3ff3ac42ad3239541a1b2f567eb83108680e57c859ba2bc148141a6e30023a", kill_on_drop: false }`
[INFO] [stdout] 6b3ff3ac42ad3239541a1b2f567eb83108680e57c859ba2bc148141a6e30023a