[INFO] crate racer 2.1.28 is already in cache
[INFO] checking racer-2.1.28 against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] extracting crate racer 2.1.28 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate racer 2.1.28 on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate racer 2.1.28
[INFO] finished tweaking crates.io crate racer 2.1.28
[INFO] tweaked toml for crates.io crate racer 2.1.28 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate racer 2.1.28 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] fa54d1b303d06d23becdc1299a3be8bd812a66c9e9af7c4da42d0223e9215954
[INFO] running `"docker" "start" "-a" "fa54d1b303d06d23becdc1299a3be8bd812a66c9e9af7c4da42d0223e9215954"`
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling rustc-rayon-core v0.2.0
[INFO] [stderr]    Compiling rustc-rayon v0.2.0
[INFO] [stderr]     Checking rustc-ap-graphviz v583.0.0
[INFO] [stderr]     Checking rustc-ap-graphviz v606.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v606.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v583.0.0
[INFO] [stderr]    Compiling rustc-ap-syntax v583.0.0
[INFO] [stderr]    Compiling rustc-ap-syntax v606.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v606.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v583.0.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking jobserver v0.1.17
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rustc-ap-serialize v606.0.0
[INFO] [stderr]     Checking rustc-ap-serialize v583.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking rustc-ap-rustc_index v606.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v606.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v583.0.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking rustc-ap-arena v606.0.0
[INFO] [stderr]     Checking rustc-ap-arena v583.0.0
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v606.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v583.0.0
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]     Checking rustc-ap-syntax_pos v583.0.0
[INFO] [stderr]     Checking rustc-ap-syntax_pos v606.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v583.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v606.0.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking racer-interner v0.1.0
[INFO] [stderr]     Checking rls-span v0.5.2
[INFO] [stderr]     Checking racer-cargo-metadata v0.1.1
[INFO] [stderr] error[E0046]: not all trait items implemented, missing: `mixed_site`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-syntax-583.0.0/ext/proc_macro_server.rs:657:1
[INFO] [stderr]     |
[INFO] [stderr] 657 | impl server::Span for Rustc<'_> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `mixed_site` in implementation
[INFO] [stderr]     |
[INFO] [stderr]     = help: implement the missing item: `fn mixed_site(&mut self) -> <Self as proc_macro::bridge::server::Types>::Span { unimplemented!() }`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0046`.
[INFO] [stderr] error: could not compile `rustc-ap-syntax`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "fa54d1b303d06d23becdc1299a3be8bd812a66c9e9af7c4da42d0223e9215954"`
[INFO] running `"docker" "rm" "-f" "fa54d1b303d06d23becdc1299a3be8bd812a66c9e9af7c4da42d0223e9215954"`
[INFO] [stdout] fa54d1b303d06d23becdc1299a3be8bd812a66c9e9af7c4da42d0223e9215954