[INFO] cloning repository https://github.com/mskwarek/rustchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mskwarek/rustchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmskwarek%2Frustchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmskwarek%2Frustchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] deb0b15bb8f9b5c3a945c470109734a1560458f8
[INFO] checking mskwarek/rustchain against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmskwarek%2Frustchain" "/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/mskwarek/rustchain on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mskwarek/rustchain
[INFO] finished tweaking git repo https://github.com/mskwarek/rustchain
[INFO] tweaked toml for git repo https://github.com/mskwarek/rustchain written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mskwarek/rustchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba6d1ba85fbb0c50e651e852ba6f41493e5ea77257ba9edcbb8a227e402546ff
[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" "ba6d1ba85fbb0c50e651e852ba6f41493e5ea77257ba9edcbb8a227e402546ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba6d1ba85fbb0c50e651e852ba6f41493e5ea77257ba9edcbb8a227e402546ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba6d1ba85fbb0c50e651e852ba6f41493e5ea77257ba9edcbb8a227e402546ff", kill_on_drop: false }`
[INFO] [stdout] ba6d1ba85fbb0c50e651e852ba6f41493e5ea77257ba9edcbb8a227e402546ff
[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=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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9496c9c5c54332b5816da63b048fb49e23ba4bf1c41d755945b71b713e77d94
[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" "c9496c9c5c54332b5816da63b048fb49e23ba4bf1c41d755945b71b713e77d94", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking uuid v0.6.3
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking tokio v0.1.8
[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-1.7.0/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" "c9496c9c5c54332b5816da63b048fb49e23ba4bf1c41d755945b71b713e77d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9496c9c5c54332b5816da63b048fb49e23ba4bf1c41d755945b71b713e77d94", kill_on_drop: false }`
[INFO] [stdout] c9496c9c5c54332b5816da63b048fb49e23ba4bf1c41d755945b71b713e77d94