[INFO] updating cached repository https://github.com/smith61/ls_cxx
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d0a85a065aea9c7f042e7f911753f5dcdc6b6bf
[INFO] checking smith61/ls_cxx against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmith61%2Fls_cxx" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/smith61/ls_cxx on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/smith61/ls_cxx
[INFO] finished tweaking git repo https://github.com/smith61/ls_cxx
[INFO] tweaked toml for git repo https://github.com/smith61/ls_cxx written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/smith61/ls_cxx already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8501ffc36d2ed951b9270becd578577afa77e5eb031e6906cdfd7f11b328129f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8501ffc36d2ed951b9270becd578577afa77e5eb031e6906cdfd7f11b328129f"`
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking dtoa v0.3.1
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking ordered-float v0.2.3
[INFO] [stderr]    Compiling clang-sys v0.13.0
[INFO] [stderr]    Compiling clang-sys v0.11.1
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking futures_rb v0.1.0 (https://github.com/smith61/futures_rb#c38d363e)
[INFO] [stderr]     Checking tokio-core v0.1.4
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]     Checking tokio-stdio v0.1.0 (https://github.com/smith61/tokio-stdio#f5aa7a6d)
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]     Checking clang v0.14.1
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking url v1.4.0
[INFO] [stderr]     Checking serde-value v0.3.1
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.0/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0713`.
[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 `"docker" "inspect" "8501ffc36d2ed951b9270becd578577afa77e5eb031e6906cdfd7f11b328129f"`
[INFO] running `"docker" "rm" "-f" "8501ffc36d2ed951b9270becd578577afa77e5eb031e6906cdfd7f11b328129f"`
[INFO] [stdout] 8501ffc36d2ed951b9270becd578577afa77e5eb031e6906cdfd7f11b328129f