[INFO] cloning repository https://github.com/daviwil/rustic-mud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daviwil/rustic-mud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviwil%2Frustic-mud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviwil%2Frustic-mud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fcf1ef643929faf3639ee118106ee62f1854ff7
[INFO] checking daviwil/rustic-mud against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviwil%2Frustic-mud" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daviwil/rustic-mud on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daviwil/rustic-mud
[INFO] finished tweaking git repo https://github.com/daviwil/rustic-mud
[INFO] tweaked toml for git repo https://github.com/daviwil/rustic-mud written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/daviwil/rustic-mud already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcolor v0.3.5
[INFO] [stderr]   Downloaded mio v0.6.13
[INFO] [stderr]   Downloaded ws v0.7.3
[INFO] [stderr]   Downloaded env_logger v0.5.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef558959a121afcf3c8e23164a1922da4b05d7d2d95c768189be843fd06961ce
[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" "ef558959a121afcf3c8e23164a1922da4b05d7d2d95c768189be843fd06961ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef558959a121afcf3c8e23164a1922da4b05d7d2d95c768189be843fd06961ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef558959a121afcf3c8e23164a1922da4b05d7d2d95c768189be843fd06961ce", kill_on_drop: false }`
[INFO] [stdout] ef558959a121afcf3c8e23164a1922da4b05d7d2d95c768189be843fd06961ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] d56a2e54db1b624bf0bfb8a82352efc36fa9d167b42f4a3498f9281c55402bf3
[INFO] running `Command { std: "docker" "start" "-a" "d56a2e54db1b624bf0bfb8a82352efc36fa9d167b42f4a3498f9281c55402bf3", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mio v0.6.13
[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" "d56a2e54db1b624bf0bfb8a82352efc36fa9d167b42f4a3498f9281c55402bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d56a2e54db1b624bf0bfb8a82352efc36fa9d167b42f4a3498f9281c55402bf3", kill_on_drop: false }`
[INFO] [stdout] d56a2e54db1b624bf0bfb8a82352efc36fa9d167b42f4a3498f9281c55402bf3