[INFO] cloning repository https://github.com/anyley/test_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anyley/test_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanyley%2Ftest_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanyley%2Ftest_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e096cdc56009828c864f35c472cebaa50644f20
[INFO] testing anyley/test_rust against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanyley%2Ftest_rust" "/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/anyley/test_rust on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anyley/test_rust
[INFO] finished tweaking git repo https://github.com/anyley/test_rust
[INFO] tweaked toml for git repo https://github.com/anyley/test_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/anyley/test_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/chyh1990/yaml-rust.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.15
[INFO] [stderr]   Downloaded libc v0.2.32
[INFO] [stderr]   Downloaded serde_json v1.0.3
[INFO] [stderr]   Downloaded ws v0.7.3
[INFO] [stderr]   Downloaded url v1.5.1
[INFO] [stderr]   Downloaded mio v0.6.10
[INFO] [stderr]   Downloaded serde_derive v1.0.15
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92ac5aaa1bb39d4c9ea9ac1b96f0583f342e313882da314434e0611c0c50e36a
[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" "92ac5aaa1bb39d4c9ea9ac1b96f0583f342e313882da314434e0611c0c50e36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92ac5aaa1bb39d4c9ea9ac1b96f0583f342e313882da314434e0611c0c50e36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92ac5aaa1bb39d4c9ea9ac1b96f0583f342e313882da314434e0611c0c50e36a", kill_on_drop: false }`
[INFO] [stdout] 92ac5aaa1bb39d4c9ea9ac1b96f0583f342e313882da314434e0611c0c50e36a
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 561da245f0598c0e2f94d8470a2929fbce4a03d42dd1f3cf0ea4b64b5e940ca1
[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" "561da245f0598c0e2f94d8470a2929fbce4a03d42dd1f3cf0ea4b64b5e940ca1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.32
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling serde v1.0.15
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling linked-hash-map v0.5.0
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling yaml-rust v0.3.8 (https://github.com/chyh1990/yaml-rust.git#ed850190)
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]    Compiling url v1.5.1
[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] 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" "561da245f0598c0e2f94d8470a2929fbce4a03d42dd1f3cf0ea4b64b5e940ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "561da245f0598c0e2f94d8470a2929fbce4a03d42dd1f3cf0ea4b64b5e940ca1", kill_on_drop: false }`
[INFO] [stdout] 561da245f0598c0e2f94d8470a2929fbce4a03d42dd1f3cf0ea4b64b5e940ca1