[INFO] cloning repository https://github.com/nicguzzo/keyboard-app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicguzzo/keyboard-app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicguzzo%2Fkeyboard-app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicguzzo%2Fkeyboard-app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64665a26d4084445c7cb4dc5156dc21c1e79f907
[INFO] testing nicguzzo/keyboard-app against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicguzzo%2Fkeyboard-app" "/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/nicguzzo/keyboard-app on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicguzzo/keyboard-app
[INFO] finished tweaking git repo https://github.com/nicguzzo/keyboard-app
[INFO] tweaked toml for git repo https://github.com/nicguzzo/keyboard-app written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/nicguzzo/keyboard-app already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 389c4f6f8d619f6a1137cad90a63d2b262a9b46ebc84cd41ede7c902f58fe7b2
[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" "389c4f6f8d619f6a1137cad90a63d2b262a9b46ebc84cd41ede7c902f58fe7b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "389c4f6f8d619f6a1137cad90a63d2b262a9b46ebc84cd41ede7c902f58fe7b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "389c4f6f8d619f6a1137cad90a63d2b262a9b46ebc84cd41ede7c902f58fe7b2", kill_on_drop: false }`
[INFO] [stdout] 389c4f6f8d619f6a1137cad90a63d2b262a9b46ebc84cd41ede7c902f58fe7b2
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9781701eb4e57a7939dcf8d4030a96de0d4f93abbb482c2bc772161ea579955e
[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" "9781701eb4e57a7939dcf8d4030a96de0d4f93abbb482c2bc772161ea579955e", kill_on_drop: false }`
[INFO] [stderr]    Compiling openssl v0.9.15
[INFO] [stderr]    Compiling foreign-types v0.2.0
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling ioctl-rs v0.1.5
[INFO] [stderr]    Compiling openssl-sys v0.9.15
[INFO] [stderr]    Compiling net2 v0.2.30
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling bytes v0.4.4
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling serial v0.4.0
[INFO] [stderr]    Compiling tokio-io v0.1.2
[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-1.5.1/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" "9781701eb4e57a7939dcf8d4030a96de0d4f93abbb482c2bc772161ea579955e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9781701eb4e57a7939dcf8d4030a96de0d4f93abbb482c2bc772161ea579955e", kill_on_drop: false }`
[INFO] [stdout] 9781701eb4e57a7939dcf8d4030a96de0d4f93abbb482c2bc772161ea579955e