[INFO] cloning repository https://github.com/not-inept/dirc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/not-inept/dirc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnot-inept%2Fdirc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnot-inept%2Fdirc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c530b90cb715222893774b685147ac8117231ea
[INFO] testing not-inept/dirc against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnot-inept%2Fdirc" "/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/not-inept/dirc 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/not-inept/dirc
[INFO] finished tweaking git repo https://github.com/not-inept/dirc
[INFO] tweaked toml for git repo https://github.com/not-inept/dirc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/not-inept/dirc 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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cc004d953f3e169cabbebb1b0cca217211b780d1bd40498edffe67d038c396f
[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" "7cc004d953f3e169cabbebb1b0cca217211b780d1bd40498edffe67d038c396f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cc004d953f3e169cabbebb1b0cca217211b780d1bd40498edffe67d038c396f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc004d953f3e169cabbebb1b0cca217211b780d1bd40498edffe67d038c396f", kill_on_drop: false }`
[INFO] [stdout] 7cc004d953f3e169cabbebb1b0cca217211b780d1bd40498edffe67d038c396f
[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=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] be1810d31132856127c22c025a1fb2d35d51b1cb32d82939ec450d9ea6db4ec2
[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" "be1810d31132856127c22c025a1fb2d35d51b1cb32d82939ec450d9ea6db4ec2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]    Compiling openssl v0.9.20
[INFO] [stderr]    Compiling serde v1.0.16
[INFO] [stderr]    Compiling bufstream v0.1.3
[INFO] [stderr]    Compiling bitflags v1.0.0
[INFO] [stderr]    Compiling vec_shift v0.1.0
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling parking_lot_core v0.2.6
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling nom v3.2.0
[INFO] [stderr]    Compiling threadpool v1.7.0
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling tokio-io v0.1.3
[INFO] [stderr]    Compiling mime_guess v1.8.2
[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" "be1810d31132856127c22c025a1fb2d35d51b1cb32d82939ec450d9ea6db4ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1810d31132856127c22c025a1fb2d35d51b1cb32d82939ec450d9ea6db4ec2", kill_on_drop: false }`
[INFO] [stdout] be1810d31132856127c22c025a1fb2d35d51b1cb32d82939ec450d9ea6db4ec2