[INFO] cloning repository https://github.com/bchallenor/drawbridge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bchallenor/drawbridge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbchallenor%2Fdrawbridge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbchallenor%2Fdrawbridge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3958b810f973e4cc8ee7cf7974a030b221ea621e
[INFO] testing bchallenor/drawbridge against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbchallenor%2Fdrawbridge" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bchallenor/drawbridge 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/bchallenor/drawbridge
[INFO] finished tweaking git repo https://github.com/bchallenor/drawbridge
[INFO] tweaked toml for git repo https://github.com/bchallenor/drawbridge written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/bchallenor/drawbridge 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]  Downloading crates ...
[INFO] [stderr]   Downloaded remove_dir_all v0.5.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.27
[INFO] [stderr]   Downloaded chrono v0.4.1
[INFO] [stderr]   Downloaded hex v0.3.1
[INFO] [stderr]   Downloaded backtrace v0.3.5
[INFO] [stderr]   Downloaded hyper v0.11.24
[INFO] [stderr]   Downloaded arrayref v0.3.4
[INFO] [stderr]   Downloaded rustc_version v0.2.2
[INFO] [stderr]   Downloaded regex-syntax v0.5.3
[INFO] [stderr]   Downloaded serde v1.0.36
[INFO] [stderr]   Downloaded digest v0.7.2
[INFO] [stderr]   Downloaded sha2 v0.7.0
[INFO] [stderr]   Downloaded rusoto_core v0.32.0
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded tokio-core v0.1.16
[INFO] [stderr]   Downloaded cc v1.0.9
[INFO] [stderr]   Downloaded schannel v0.1.11
[INFO] [stderr]   Downloaded rusoto_credential v0.11.0
[INFO] [stderr]   Downloaded tokio-executor v0.1.1
[INFO] [stderr]   Downloaded futures v0.1.20
[INFO] [stderr]   Downloaded tokio v0.1.4
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.1
[INFO] [stderr]   Downloaded ipnet v1.0.0
[INFO] [stderr]   Downloaded rusoto_route53 v0.32.0
[INFO] [stderr]   Downloaded rusoto_ec2 v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e3a9382c9cf2986ece3d4299e853cdddc48da50a65a7f9e3e5c61b116abb27db
[INFO] running `Command { std: "docker" "start" "-a" "e3a9382c9cf2986ece3d4299e853cdddc48da50a65a7f9e3e5c61b116abb27db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3a9382c9cf2986ece3d4299e853cdddc48da50a65a7f9e3e5c61b116abb27db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a9382c9cf2986ece3d4299e853cdddc48da50a65a7f9e3e5c61b116abb27db", kill_on_drop: false }`
[INFO] [stdout] e3a9382c9cf2986ece3d4299e853cdddc48da50a65a7f9e3e5c61b116abb27db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] e4bb65dcf31563697204f400a3a1dfcdc491c762883d8b26722adfaf37715d73
[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" "e4bb65dcf31563697204f400a3a1dfcdc491c762883d8b26722adfaf37715d73", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.20
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling serde v1.0.36
[INFO] [stderr]    Compiling arrayref v0.3.4
[INFO] [stderr]    Compiling hex v0.3.1
[INFO] [stderr]    Compiling ipnet v1.0.0
[INFO] [stderr]    Compiling atty v0.2.8
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling digest v0.7.2
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling hmac v0.5.0
[INFO] [stderr]    Compiling rusoto_core v0.32.0
[INFO] [stderr]    Compiling sha2 v0.7.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[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] [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" "e4bb65dcf31563697204f400a3a1dfcdc491c762883d8b26722adfaf37715d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4bb65dcf31563697204f400a3a1dfcdc491c762883d8b26722adfaf37715d73", kill_on_drop: false }`
[INFO] [stdout] e4bb65dcf31563697204f400a3a1dfcdc491c762883d8b26722adfaf37715d73