[INFO] cloning repository https://github.com/keringar/mute-cs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keringar/mute-cs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeringar%2Fmute-cs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeringar%2Fmute-cs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bd2c4afc79d3e41ca3f799bc476024c73080448
[INFO] checking keringar/mute-cs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeringar%2Fmute-cs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keringar/mute-cs on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/keringar/mute-cs
[INFO] finished tweaking git repo https://github.com/keringar/mute-cs
[INFO] tweaked toml for git repo https://github.com/keringar/mute-cs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/keringar/mute-cs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95efcac8c48ec32fdd35aa269037580241cc2640c043c2e69db570253bde7ba8
[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" "95efcac8c48ec32fdd35aa269037580241cc2640c043c2e69db570253bde7ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95efcac8c48ec32fdd35aa269037580241cc2640c043c2e69db570253bde7ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95efcac8c48ec32fdd35aa269037580241cc2640c043c2e69db570253bde7ba8", kill_on_drop: false }`
[INFO] [stdout] 95efcac8c48ec32fdd35aa269037580241cc2640c043c2e69db570253bde7ba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75c66180cce6c5f632c394f17c5316d6f3dcb28b229fd4a675b2a9d679fe305f
[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" "75c66180cce6c5f632c394f17c5316d6f3dcb28b229fd4a675b2a9d679fe305f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.0
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]     Checking memoffset v0.1.0
[INFO] [stderr]     Checking hostname v0.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]     Checking uuid v0.6.2
[INFO] [stderr]     Checking crossbeam-epoch v0.2.0
[INFO] [stderr]     Checking http v0.1.5
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking mio-uds v0.6.4
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking resolv-conf v0.6.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking tokio v0.1.5
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]     Checking tokio-core v0.1.16
[INFO] [stderr]     Checking crossbeam-channel v0.1.2
[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-1.7.0/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" "75c66180cce6c5f632c394f17c5316d6f3dcb28b229fd4a675b2a9d679fe305f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75c66180cce6c5f632c394f17c5316d6f3dcb28b229fd4a675b2a9d679fe305f", kill_on_drop: false }`
[INFO] [stdout] 75c66180cce6c5f632c394f17c5316d6f3dcb28b229fd4a675b2a9d679fe305f