[INFO] cloning repository https://github.com/scvalex/python-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scvalex/python-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscvalex%2Fpython-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscvalex%2Fpython-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9f22bb0bfb9df866d4aa79f61287e852760d11b
[INFO] checking scvalex/python-challenge against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscvalex%2Fpython-challenge" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scvalex/python-challenge on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scvalex/python-challenge
[INFO] finished tweaking git repo https://github.com/scvalex/python-challenge
[INFO] tweaked toml for git repo https://github.com/scvalex/python-challenge written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/scvalex/python-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] dfe0da3891cca9f3144c19b8fb56d284909381f1fa84f8008b4fc9c43cc3b024
[INFO] running `Command { std: "docker" "start" "-a" "dfe0da3891cca9f3144c19b8fb56d284909381f1fa84f8008b4fc9c43cc3b024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfe0da3891cca9f3144c19b8fb56d284909381f1fa84f8008b4fc9c43cc3b024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe0da3891cca9f3144c19b8fb56d284909381f1fa84f8008b4fc9c43cc3b024", kill_on_drop: false }`
[INFO] [stdout] dfe0da3891cca9f3144c19b8fb56d284909381f1fa84f8008b4fc9c43cc3b024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c67eb01ff149a1d3b17bdc89cf7b735914cebad14cd30af129e9c493ee919507
[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" "c67eb01ff149a1d3b17bdc89cf7b735914cebad14cd30af129e9c493ee919507", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]    Compiling cc v1.0.10
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking encoding_rs v0.7.2
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking base64 v0.9.0
[INFO] [stderr]    Compiling crc v1.7.0
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]     Checking libflate v0.1.14
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.28
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[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" "c67eb01ff149a1d3b17bdc89cf7b735914cebad14cd30af129e9c493ee919507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67eb01ff149a1d3b17bdc89cf7b735914cebad14cd30af129e9c493ee919507", kill_on_drop: false }`
[INFO] [stdout] c67eb01ff149a1d3b17bdc89cf7b735914cebad14cd30af129e9c493ee919507