[INFO] cloning repository https://github.com/rust-lang/rust-playpen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-lang/rust-playpen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Frust-playpen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Frust-playpen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d0975ed13716bbc1c242fdbdf75dc4c6e42f8d3
[INFO] checking rust-lang/rust-playpen against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Frust-playpen" "/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/rust-lang/rust-playpen on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang/rust-playpen
[INFO] finished tweaking git repo https://github.com/rust-lang/rust-playpen
[INFO] tweaked toml for git repo https://github.com/rust-lang/rust-playpen written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang/rust-playpen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-mockstream v1.1.0
[INFO] [stderr]   Downloaded native-tls v0.1.4
[INFO] [stderr]   Downloaded reqwest v0.7.3
[INFO] [stderr]   Downloaded itoa v0.3.3
[INFO] [stderr]   Downloaded wait-timeout v0.1.5
[INFO] [stderr]   Downloaded bytes v0.4.5
[INFO] [stderr]   Downloaded futures v0.1.15
[INFO] [stderr]   Downloaded openssl-sys v0.9.17
[INFO] [stderr]   Downloaded serde v1.0.12
[INFO] [stderr]   Downloaded gcc v0.3.53
[INFO] [stderr]   Downloaded libflate v0.1.11
[INFO] [stderr]   Downloaded tokio-tls v0.1.3
[INFO] [stderr]   Downloaded irc v0.12.4
[INFO] [stderr]   Downloaded tokio-io v0.1.3
[INFO] [stderr]   Downloaded openssl v0.9.17
[INFO] [stderr]   Downloaded serde_derive v1.0.14
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92fd9f93ed7e8ff16963d0c14dce04e1705e9cb145dc7cc7ea22aa9cb15b7c1a
[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" "92fd9f93ed7e8ff16963d0c14dce04e1705e9cb145dc7cc7ea22aa9cb15b7c1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92fd9f93ed7e8ff16963d0c14dce04e1705e9cb145dc7cc7ea22aa9cb15b7c1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92fd9f93ed7e8ff16963d0c14dce04e1705e9cb145dc7cc7ea22aa9cb15b7c1a", kill_on_drop: false }`
[INFO] [stdout] 92fd9f93ed7e8ff16963d0c14dce04e1705e9cb145dc7cc7ea22aa9cb15b7c1a
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f564ebc333d7c625cc6fb7cf9994f3d34dbff5e1163a21a8c056ebc0a9d628e7
[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" "f564ebc333d7c625cc6fb7cf9994f3d34dbff5e1163a21a8c056ebc0a9d628e7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.30
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking futures v0.1.15
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking percent-encoding v1.0.0
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking httparse v1.2.3
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling openssl v0.9.17
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking foreign-types v0.2.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking serde v1.0.12
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking itoa v0.3.3
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking sequence_trie v0.2.1
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]     Checking route-recognizer v0.1.12
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking conduit-mime-types v0.7.3
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking libflate v0.1.11
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking lru-cache v0.1.1
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking url v1.5.1
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking bytes v0.4.5
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking mio v0.6.10
[INFO] [stderr]    Compiling unicase v2.0.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling openssl-sys v0.9.17
[INFO] [stderr]    Compiling backtrace-sys v0.1.12
[INFO] [stderr]     Checking tokio-io v0.1.3
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.5
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking mime v0.3.3
[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-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 251 |     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`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f564ebc333d7c625cc6fb7cf9994f3d34dbff5e1163a21a8c056ebc0a9d628e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f564ebc333d7c625cc6fb7cf9994f3d34dbff5e1163a21a8c056ebc0a9d628e7", kill_on_drop: false }`
[INFO] [stdout] f564ebc333d7c625cc6fb7cf9994f3d34dbff5e1163a21a8c056ebc0a9d628e7