[INFO] cloning repository https://github.com/Dylan-DPC/doctor
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dylan-DPC/doctor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fdoctor"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fdoctor'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb1b770c7b0d3219c49b48dae788d3365d5d100b
[INFO] checking Dylan-DPC/doctor against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fdoctor" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dylan-DPC/doctor on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Dylan-DPC/doctor
[INFO] finished tweaking git repo https://github.com/Dylan-DPC/doctor
[INFO] tweaked toml for git repo https://github.com/Dylan-DPC/doctor written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Dylan-DPC/doctor already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a485a8205d3b9c06e3ab42129174b86236a430fbec6ddbde91ad9842a62a3c01
[INFO] running `"docker" "start" "-a" "a485a8205d3b9c06e3ab42129174b86236a430fbec6ddbde91ad9842a62a3c01"`
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]     Checking futures v0.1.24
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking lazycell v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.12
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.4
[INFO] [stderr]     Checking ego-tree v0.5.0
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking encoding_rs v0.8.6
[INFO] [stderr]    Compiling openssl-sys v0.9.36
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking backtrace-sys v0.1.24
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]     Checking libflate v0.1.16
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking tendril v0.4.0
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]    Compiling string_cache_codegen v0.4.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling selectors v0.19.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]     Checking tokio-executor v0.1.4
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]    Compiling serde_derive v1.0.78
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling cssparser v0.23.10
[INFO] [stderr]    Compiling html5ever v0.22.3
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]    Compiling cssparser-macros v0.3.4
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling markup5ever v0.7.2
[INFO] [stderr]     Checking cargo_metadata v0.6.0
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking hyper v0.12.10
[INFO] [stderr] error[E0506]: cannot assign to `self.input.cached_token` because it is borrowed
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.23.10/src/parser.rs:572:17
[INFO] [stderr]     |
[INFO] [stderr] 547 |     pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> {
[INFO] [stderr]     |                                                   - let's call the lifetime of this reference `'1`
[INFO] [stderr] ...
[INFO] [stderr] 560 |             Some(ref cached_token)
[INFO] [stderr]     |                  ---------------- borrow of `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 572 |                 self.input.cached_token = Some(CachedToken {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 584 |         Ok(token)
[INFO] [stderr]     |         --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0506`.
[INFO] [stderr] error: could not compile `cssparser`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a485a8205d3b9c06e3ab42129174b86236a430fbec6ddbde91ad9842a62a3c01"`
[INFO] running `"docker" "rm" "-f" "a485a8205d3b9c06e3ab42129174b86236a430fbec6ddbde91ad9842a62a3c01"`
[INFO] [stdout] a485a8205d3b9c06e3ab42129174b86236a430fbec6ddbde91ad9842a62a3c01