[INFO] cloning repository https://github.com/ustulation/mio-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ustulation/mio-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fmio-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fmio-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 350f283ab37f511b5f53783860e02007ae1b78b6
[INFO] testing ustulation/mio-poc against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fmio-poc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ustulation/mio-poc on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ustulation/mio-poc
[INFO] finished tweaking git repo https://github.com/ustulation/mio-poc
[INFO] tweaked toml for git repo https://github.com/ustulation/mio-poc written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ustulation/mio-poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytes v0.3.0
[INFO] [stderr]   Downloaded matches v0.1.4
[INFO] [stderr]   Downloaded unwrap v1.1.0
[INFO] [stderr]   Downloaded rustc-serialize v0.3.22
[INFO] [stderr]   Downloaded unicode-bidi v0.2.4
[INFO] [stderr]   Downloaded ws v0.5.3
[INFO] [stderr]   Downloaded sha1 v0.2.0
[INFO] [stderr]   Downloaded mio v0.5.1
[INFO] [stderr]   Downloaded miow v0.2.0
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded miow v0.1.5
[INFO] [stderr]   Downloaded ordered-float v0.1.0
[INFO] [stderr]   Downloaded serde-value v0.2.1
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded redox_syscall v0.1.16
[INFO] [stderr]   Downloaded unicode-normalization v0.1.3
[INFO] [stderr]   Downloaded quick-error v1.1.0
[INFO] [stderr]   Downloaded url v1.4.0
[INFO] [stderr]   Downloaded httparse v1.2.1
[INFO] [stderr]   Downloaded slab v0.1.3
[INFO] [stderr]   Downloaded time v0.1.36
[INFO] [stderr]   Downloaded libc v0.2.20
[INFO] [stderr]   Downloaded mio v0.6.4
[INFO] [stderr]   Downloaded maidsafe_utilities v0.10.0
[INFO] [stderr]   Downloaded bincode v0.6.1
[INFO] [stderr]   Downloaded config_file_handler v0.4.0
[INFO] [stderr]   Downloaded humantime v0.1.3
[INFO] [stderr]   Downloaded log4rs v0.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] 6495d2dea8374d63fa2c751c1a92d2e73a4850e001aaaaedbb02280bfb737d44
[INFO] running `Command { std: "docker" "start" "-a" "6495d2dea8374d63fa2c751c1a92d2e73a4850e001aaaaedbb02280bfb737d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6495d2dea8374d63fa2c751c1a92d2e73a4850e001aaaaedbb02280bfb737d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6495d2dea8374d63fa2c751c1a92d2e73a4850e001aaaaedbb02280bfb737d44", kill_on_drop: false }`
[INFO] [stdout] 6495d2dea8374d63fa2c751c1a92d2e73a4850e001aaaaedbb02280bfb737d44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dec342b89ecd1854b3a97803dc048d43818e44061d0746c99d7d69e8fa7efcc
[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" "7dec342b89ecd1854b3a97803dc048d43818e44061d0746c99d7d69e8fa7efcc", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling unwrap v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling unsafe-any v0.4.1
[INFO] [stderr]    Compiling humantime v0.1.3
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling bincode v0.6.1
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling config_file_handler v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling mio v0.6.4
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling ordered-float v0.1.0
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling serde-value v0.2.1
[INFO] [stderr]    Compiling url v1.4.0
[INFO] [stderr]    Compiling log4rs v0.4.8
[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-1.4.0/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] [stderr] error: could not compile `url`
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[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" "7dec342b89ecd1854b3a97803dc048d43818e44061d0746c99d7d69e8fa7efcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dec342b89ecd1854b3a97803dc048d43818e44061d0746c99d7d69e8fa7efcc", kill_on_drop: false }`
[INFO] [stdout] 7dec342b89ecd1854b3a97803dc048d43818e44061d0746c99d7d69e8fa7efcc