[INFO] cloning repository https://github.com/rchaser53/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rchaser53/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65526d9ec11d37c2f24a77328f6ce598afe8c87d
[INFO] checking rchaser53/rust_playground against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frust_playground" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rchaser53/rust_playground on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rchaser53/rust_playground
[INFO] finished tweaking git repo https://github.com/rchaser53/rust_playground
[INFO] tweaked toml for git repo https://github.com/rchaser53/rust_playground written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/rchaser53/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc_version v0.2.1
[INFO] [stderr]   Downloaded strings v0.1.1
[INFO] [stderr]   Downloaded getopts v0.2.17
[INFO] [stderr]   Downloaded syntex_syntax v0.59.1
[INFO] [stderr]   Downloaded rustfmt v0.10.0
[INFO] [stderr]   Downloaded schannel v0.1.10
[INFO] [stderr]   Downloaded syntex_errors v0.59.1
[INFO] [stderr]   Downloaded syntex_pos v0.59.1
[INFO] [stderr]   Downloaded extprim v1.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f847bcd0fa8a1315588396e150158cfcbf27883931cc5e2bcbf28929334dd5a0
[INFO] running `Command { std: "docker" "start" "-a" "f847bcd0fa8a1315588396e150158cfcbf27883931cc5e2bcbf28929334dd5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f847bcd0fa8a1315588396e150158cfcbf27883931cc5e2bcbf28929334dd5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f847bcd0fa8a1315588396e150158cfcbf27883931cc5e2bcbf28929334dd5a0", kill_on_drop: false }`
[INFO] [stdout] f847bcd0fa8a1315588396e150158cfcbf27883931cc5e2bcbf28929334dd5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ef3aa6d6b5d34f2a4c29725e3fcc054c3c6b94d868ba21c161ea75dcfbbcd9d
[INFO] running `Command { std: "docker" "start" "-a" "1ef3aa6d6b5d34f2a4c29725e3fcc054c3c6b94d868ba21c161ea75dcfbbcd9d", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking num-traits v0.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling rustfmt v0.10.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.24
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking url v1.6.0
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling rustc_version v0.2.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking mio v0.6.12
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking strings v0.1.1
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]    Compiling extprim v1.5.1
[INFO] [stderr]     Checking num-integer v0.1.36
[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-1.6.0/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] [stderr] error: could not compile `url` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "1ef3aa6d6b5d34f2a4c29725e3fcc054c3c6b94d868ba21c161ea75dcfbbcd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef3aa6d6b5d34f2a4c29725e3fcc054c3c6b94d868ba21c161ea75dcfbbcd9d", kill_on_drop: false }`
[INFO] [stdout] 1ef3aa6d6b5d34f2a4c29725e3fcc054c3c6b94d868ba21c161ea75dcfbbcd9d