[INFO] updating cached repository https://github.com/muktakosh/unicorn
[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] 55b0a35021b16ac3e8ca162e57bd8c70748fbf0b
[INFO] checking muktakosh/unicorn against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuktakosh%2Funicorn" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/muktakosh/unicorn on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/muktakosh/unicorn
[INFO] finished tweaking git repo https://github.com/muktakosh/unicorn
[INFO] tweaked toml for git repo https://github.com/muktakosh/unicorn written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/muktakosh/unicorn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] bb18e31949856e3d98be7516e7d9f0a43955cf10ea58ae31eb622f7d3332ca56
[INFO] running `"docker" "start" "-a" "bb18e31949856e3d98be7516e7d9f0a43955cf10ea58ae31eb622f7d3332ca56"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]    Compiling syntex_pos v0.52.0
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking serde_json v0.8.4
[INFO] [stderr]    Compiling term v0.4.4
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]    Compiling syn v0.10.5
[INFO] [stderr]     Checking clap v2.19.2
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]    Compiling syntex_errors v0.52.0
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]    Compiling syntex_syntax v0.52.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]     Checking url v1.2.4
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr] error[E0423]: expected function, tuple struct or tuple variant, found struct `ast::Name`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.52.0/src/symbol.rs:146:27
[INFO] [stderr]     |
[INFO] [stderr] 146 |                       name: ast::Name($index),
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 | / declare_keywords! {
[INFO] [stderr] 166 | |     // Invalid identifier
[INFO] [stderr] 167 | |     (0,  Invalid,        "")
[INFO] [stderr] 168 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 228 | |     (55, Union,          "union")
[INFO] [stderr] 229 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[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-1.2.4/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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: could not compile `syntex_syntax`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bb18e31949856e3d98be7516e7d9f0a43955cf10ea58ae31eb622f7d3332ca56"`
[INFO] running `"docker" "rm" "-f" "bb18e31949856e3d98be7516e7d9f0a43955cf10ea58ae31eb622f7d3332ca56"`
[INFO] [stdout] bb18e31949856e3d98be7516e7d9f0a43955cf10ea58ae31eb622f7d3332ca56