[INFO] cloning repository https://github.com/asmsoft/rr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asmsoft/rr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasmsoft%2Frr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasmsoft%2Frr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42ccdc3faf64375e6c1c9d03a01f0a3f96c25c4c
[INFO] testing asmsoft/rr against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasmsoft%2Frr" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asmsoft/rr on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asmsoft/rr
[INFO] finished tweaking git repo https://github.com/asmsoft/rr
[INFO] tweaked toml for git repo https://github.com/asmsoft/rr written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/asmsoft/rr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 848df1eb86a81685a0ffce09d31f318d46f9bd05b85ebc798ddf060dffd95cbc
[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" "848df1eb86a81685a0ffce09d31f318d46f9bd05b85ebc798ddf060dffd95cbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "848df1eb86a81685a0ffce09d31f318d46f9bd05b85ebc798ddf060dffd95cbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "848df1eb86a81685a0ffce09d31f318d46f9bd05b85ebc798ddf060dffd95cbc", kill_on_drop: false }`
[INFO] [stdout] 848df1eb86a81685a0ffce09d31f318d46f9bd05b85ebc798ddf060dffd95cbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0489a0938c4f628cd12529b3391fd90c08b49d68b5a8261a32f2539558aac04
[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" "d0489a0938c4f628cd12529b3391fd90c08b49d68b5a8261a32f2539558aac04", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling podio v0.1.5
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling unwrap v1.1.0
[INFO] [stderr]    Compiling serde v1.0.15
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling leveldb-sys v2.0.1
[INFO] [stderr]    Compiling buf_redux v0.3.0
[INFO] [stderr]    Compiling sequence_trie v0.2.1
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling headers v0.1.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.5
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling num-complex v0.1.40
[INFO] [stderr]    Compiling colored v1.5.2
[INFO] [stderr]    Compiling exonum_profiler v0.1.1
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling filetime v0.1.10
[INFO] [stderr]    Compiling xattr v0.1.11
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[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]    Compiling nix v0.5.1
[INFO] [stderr] error: could not compile `url` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d0489a0938c4f628cd12529b3391fd90c08b49d68b5a8261a32f2539558aac04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0489a0938c4f628cd12529b3391fd90c08b49d68b5a8261a32f2539558aac04", kill_on_drop: false }`
[INFO] [stdout] d0489a0938c4f628cd12529b3391fd90c08b49d68b5a8261a32f2539558aac04