[INFO] cloning repository https://github.com/semantic-rs/semantic-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/semantic-rs/semantic-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemantic-rs%2Fsemantic-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemantic-rs%2Fsemantic-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 144168b9aff72fee45be0a232cf66dd2ef1de128
[INFO] testing semantic-rs/semantic-rs 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%2Fsemantic-rs%2Fsemantic-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/semantic-rs/semantic-rs 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/semantic-rs/semantic-rs
[INFO] finished tweaking git repo https://github.com/semantic-rs/semantic-rs
[INFO] tweaked toml for git repo https://github.com/semantic-rs/semantic-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/semantic-rs/semantic-rs 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded openssl v0.9.10
[INFO] [stderr]   Downloaded hyper v0.10.6
[INFO] [stderr]   Downloaded cargo_metadata v0.1.2
[INFO] [stderr]   Downloaded serde_derive v0.9.13
[INFO] [stderr]   Downloaded openssl-sys v0.9.10
[INFO] [stderr]   Downloaded libssh2-sys v0.2.10
[INFO] [stderr]   Downloaded schannel v0.1.4
[INFO] [stderr]   Downloaded syn v0.11.10
[INFO] [stderr]   Downloaded clippy_lints v0.0.121
[INFO] [stderr]   Downloaded curl-sys v0.4.8
[INFO] [stderr]   Downloaded lazy_static v0.2.6
[INFO] [stderr]   Downloaded clippy v0.0.121
[INFO] [stderr]   Downloaded travis-after-all v2.0.0
[INFO] [stderr]   Downloaded clog v0.9.1
[INFO] [stderr]   Downloaded libz-sys v1.0.20
[INFO] [stderr]   Downloaded hubcaps v0.3.1
[INFO] [stderr]   Downloaded serde v0.9.13
[INFO] [stderr]   Downloaded libgit2-sys v0.7.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d6e95614d74704d32ba5f0af7e0ee49df3616f997c094ed4923e3c530f8882c3
[INFO] running `Command { std: "docker" "start" "-a" "d6e95614d74704d32ba5f0af7e0ee49df3616f997c094ed4923e3c530f8882c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6e95614d74704d32ba5f0af7e0ee49df3616f997c094ed4923e3c530f8882c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e95614d74704d32ba5f0af7e0ee49df3616f997c094ed4923e3c530f8882c3", kill_on_drop: false }`
[INFO] [stdout] d6e95614d74704d32ba5f0af7e0ee49df3616f997c094ed4923e3c530f8882c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e13cf50cc10652a17704183197d8d4150e3977c415442de4cf87a256d3335148
[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" "e13cf50cc10652a17704183197d8d4150e3977c415442de4cf87a256d3335148", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling openssl v0.9.10
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling serde v0.9.13
[INFO] [stderr]    Compiling lazy_static v0.2.6
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling openssl-probe v0.1.0
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling num_cpus v1.3.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling unicode-bidi v0.2.5
[INFO] [stderr]    Compiling mime v0.2.3
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling hyper v0.10.6
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling syn v0.11.10
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling idna v0.1.1
[INFO] [stderr]    Compiling semver v0.2.3
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling term v0.2.14
[INFO] [stderr]    Compiling cmake v0.1.32
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling url v1.4.0
[INFO] [stderr]    Compiling openssl-sys v0.9.10
[INFO] [stderr]    Compiling libz-sys v1.0.20
[INFO] [stderr]    Compiling curl-sys v0.4.8
[INFO] [stderr]    Compiling libssh2-sys v0.2.10
[INFO] [stderr]    Compiling libgit2-sys v0.7.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[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" "e13cf50cc10652a17704183197d8d4150e3977c415442de4cf87a256d3335148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e13cf50cc10652a17704183197d8d4150e3977c415442de4cf87a256d3335148", kill_on_drop: false }`
[INFO] [stdout] e13cf50cc10652a17704183197d8d4150e3977c415442de4cf87a256d3335148