[INFO] cloning repository https://github.com/TumblrCommunity/grepbot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TumblrCommunity/grepbot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTumblrCommunity%2Fgrepbot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTumblrCommunity%2Fgrepbot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9afd096660f1c4a97e46e0aca9cc8aa3e1d7a8cd
[INFO] checking TumblrCommunity/grepbot against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTumblrCommunity%2Fgrepbot" "/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/TumblrCommunity/grepbot 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/TumblrCommunity/grepbot
[INFO] finished tweaking git repo https://github.com/TumblrCommunity/grepbot
[INFO] tweaked toml for git repo https://github.com/TumblrCommunity/grepbot written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/TumblrCommunity/grepbot 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 num-integer v0.1.36
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.7
[INFO] [stderr]   Downloaded regex-syntax v0.5.3
[INFO] [stderr]   Downloaded byteorder v1.2.2
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.0
[INFO] [stderr]   Downloaded schannel v0.1.11
[INFO] [stderr]   Downloaded url v1.7.0
[INFO] [stderr]   Downloaded hyper v0.10.13
[INFO] [stderr]   Downloaded fern v0.5.5
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded chrono v0.4.1
[INFO] [stderr]   Downloaded mvdb v0.2.1
[INFO] [stderr]   Downloaded parking_lot v0.5.4
[INFO] [stderr]   Downloaded serde v1.0.37
[INFO] [stderr]   Downloaded serde_json v1.0.13
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded openssl-sys v0.9.28
[INFO] [stderr]   Downloaded cc v1.0.9
[INFO] [stderr]   Downloaded remove_dir_all v0.5.0
[INFO] [stderr]   Downloaded smallvec v0.6.0
[INFO] [stderr]   Downloaded parking_lot_core v0.2.13
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded serde_derive v1.0.37
[INFO] [stderr]   Downloaded mime_guess v1.8.4
[INFO] [stderr]   Downloaded stable_deref_trait v1.0.0
[INFO] [stderr]   Downloaded serenity v0.5.1
[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" "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] 71615649facd88b2d8ff734ac8e4973d0923d85a4c4da4b152387b4dace81fb6
[INFO] running `Command { std: "docker" "start" "-a" "71615649facd88b2d8ff734ac8e4973d0923d85a4c4da4b152387b4dace81fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71615649facd88b2d8ff734ac8e4973d0923d85a4c4da4b152387b4dace81fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71615649facd88b2d8ff734ac8e4973d0923d85a4c4da4b152387b4dace81fb6", kill_on_drop: false }`
[INFO] [stdout] 71615649facd88b2d8ff734ac8e4973d0923d85a4c4da4b152387b4dace81fb6
[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" "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] 9b13251392231492f4981aab6b2c036e15fe137e5ed79d8fc26f51982165c74f
[INFO] running `Command { std: "docker" "start" "-a" "9b13251392231492f4981aab6b2c036e15fe137e5ed79d8fc26f51982165c74f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking siphasher v0.2.2
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking remove_dir_all v0.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]     Checking base64 v0.9.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking fern v0.5.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling openssl-sys v0.9.28
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[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] [stderr] error: could not compile `url` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9b13251392231492f4981aab6b2c036e15fe137e5ed79d8fc26f51982165c74f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b13251392231492f4981aab6b2c036e15fe137e5ed79d8fc26f51982165c74f", kill_on_drop: false }`
[INFO] [stdout] 9b13251392231492f4981aab6b2c036e15fe137e5ed79d8fc26f51982165c74f