[INFO] cloning repository https://github.com/emk/heroku-rust-cargo-hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emk/heroku-rust-cargo-hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fheroku-rust-cargo-hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fheroku-rust-cargo-hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e17e980a3fe939e677388f9fca5b3a6053d4fa4d
[INFO] checking emk/heroku-rust-cargo-hello against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fheroku-rust-cargo-hello" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emk/heroku-rust-cargo-hello on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emk/heroku-rust-cargo-hello
[INFO] finished tweaking git repo https://github.com/emk/heroku-rust-cargo-hello
[INFO] tweaked toml for git repo https://github.com/emk/heroku-rust-cargo-hello written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/emk/heroku-rust-cargo-hello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/iron/router.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unsafe-any v0.4.1
[INFO] [stderr]   Downloaded conduit-mime-types v0.7.3
[INFO] [stderr]   Downloaded error v0.1.9
[INFO] [stderr]   Downloaded iron v0.4.0
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded url v1.2.0
[INFO] [stderr]   Downloaded route-recognizer v0.1.11
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded traitobject v0.0.3
[INFO] [stderr]   Downloaded unicode-normalization v0.1.2
[INFO] [stderr]   Downloaded log v0.3.6
[INFO] [stderr]   Downloaded idna v0.1.0
[INFO] [stderr]   Downloaded mime v0.2.2
[INFO] [stderr]   Downloaded libc v0.2.16
[INFO] [stderr]   Downloaded httparse v1.1.2
[INFO] [stderr]   Downloaded matches v0.1.2
[INFO] [stderr]   Downloaded time v0.1.35
[INFO] [stderr]   Downloaded hyper v0.9.10
[INFO] [stderr]   Downloaded unicase v1.4.0
[INFO] [stderr]   Downloaded unicode-bidi v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76c82239331179241c91440c72242d5e45da629d455e3daf1b5db61da7656b8d
[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" "76c82239331179241c91440c72242d5e45da629d455e3daf1b5db61da7656b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76c82239331179241c91440c72242d5e45da629d455e3daf1b5db61da7656b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c82239331179241c91440c72242d5e45da629d455e3daf1b5db61da7656b8d", kill_on_drop: false }`
[INFO] [stdout] 76c82239331179241c91440c72242d5e45da629d455e3daf1b5db61da7656b8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2addcf24df807347e469460dcd2f5fa25f4ee5f0fd3e5883f46d95d26e8e29f1
[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" "2addcf24df807347e469460dcd2f5fa25f4ee5f0fd3e5883f46d95d26e8e29f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking traitobject v0.0.3
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking conduit-mime-types v0.7.3
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]     Checking url v1.2.0
[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-1.2.0/src/form_urlencoded.rs:246:40
[INFO] [stdout]     |
[INFO] [stdout] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 246 |     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] running `Command { std: "docker" "inspect" "2addcf24df807347e469460dcd2f5fa25f4ee5f0fd3e5883f46d95d26e8e29f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2addcf24df807347e469460dcd2f5fa25f4ee5f0fd3e5883f46d95d26e8e29f1", kill_on_drop: false }`
[INFO] [stdout] 2addcf24df807347e469460dcd2f5fa25f4ee5f0fd3e5883f46d95d26e8e29f1