Dec 19 10:19:31.280 INFO checking regexident/cargo-modules against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:19:31.280 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/regexident/cargo-modules:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:19:31.559 INFO [stdout] 0deff82e6ebb9985a9e68ff82d33bc6a48804b97c414ec73837cf69813ca3be2
Dec 19 10:19:31.561 INFO running `"docker" "start" "-a" "0deff82e6ebb9985a9e68ff82d33bc6a48804b97c414ec73837cf69813ca3be2"`
Dec 19 10:19:32.362 INFO [stderr]    Compiling rustc-rayon-core v0.1.1
Dec 19 10:19:32.365 INFO [stderr]     Checking rustc-ap-graphviz v312.0.0
Dec 19 10:19:32.365 INFO [stderr]     Checking scoped-tls v0.1.2
Dec 19 10:19:32.368 INFO [stderr]    Compiling rustc-ap-rustc_target v312.0.0
Dec 19 10:19:32.368 INFO [stderr]    Compiling rustc-ap-syntax v312.0.0
Dec 19 10:19:32.404 INFO [stderr]     Checking rustc-hash v1.0.1
Dec 19 10:19:32.404 INFO [stderr]     Checking ena v0.11.0
Dec 19 10:19:32.404 INFO [stderr]     Checking rustc-ap-rustc_cratesio_shim v312.0.0
Dec 19 10:19:32.704 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 19 10:19:32.897 INFO [stderr]     Checking smallvec v0.6.7
Dec 19 10:19:32.898 INFO [stderr]     Checking lock_api v0.1.5
Dec 19 10:19:33.180 INFO [stderr]    Compiling parking_lot_core v0.3.1
Dec 19 10:19:33.380 INFO [stderr]    Compiling structopt-derive v0.2.14
Dec 19 10:19:33.716 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 19 10:19:34.144 INFO [stderr]     Checking rustc-ap-serialize v312.0.0
Dec 19 10:19:34.678 INFO [stderr] error[E0119]: conflicting implementations of trait `serialize::Encodable` for type `std::rc::Rc<_>`:
Dec 19 10:19:34.678 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-312.0.0/serialize.rs:893:1
Dec 19 10:19:34.678 INFO [stderr]     |
Dec 19 10:19:34.678 INFO [stderr] 589 | impl<T:Encodable> Encodable for Rc<T> {
Dec 19 10:19:34.678 INFO [stderr]     | ------------------------------------- first implementation here
Dec 19 10:19:34.678 INFO [stderr] ...
Dec 19 10:19:34.678 INFO [stderr] 893 | impl<T: ?Sized + UseSpecializedEncodable> Encodable for T {
Dec 19 10:19:34.678 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::rc::Rc<_>`
Dec 19 10:19:34.678 INFO [stderr]     |
Dec 19 10:19:34.678 INFO [stderr]     = note: downstream crates may implement trait `serialize::UseSpecializedEncodable` for type `std::rc::Rc<_>`
Dec 19 10:19:34.678 INFO [stderr] 
Dec 19 10:19:34.685 INFO [stderr] error[E0119]: conflicting implementations of trait `serialize::Decodable` for type `std::rc::Rc<_>`:
Dec 19 10:19:34.685 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-312.0.0/serialize.rs:908:1
Dec 19 10:19:34.685 INFO [stderr]     |
Dec 19 10:19:34.685 INFO [stderr] 595 | impl<T:Decodable> Decodable for Rc<T> {
Dec 19 10:19:34.685 INFO [stderr]     | ------------------------------------- first implementation here
Dec 19 10:19:34.685 INFO [stderr] ...
Dec 19 10:19:34.685 INFO [stderr] 908 | impl<T: UseSpecializedDecodable> Decodable for T {
Dec 19 10:19:34.685 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::rc::Rc<_>`
Dec 19 10:19:34.685 INFO [stderr]     |
Dec 19 10:19:34.685 INFO [stderr]     = note: downstream crates may implement trait `serialize::UseSpecializedDecodable` for type `std::rc::Rc<_>`
Dec 19 10:19:34.685 INFO [stderr] 
Dec 19 10:19:34.729 INFO [stderr] error: aborting due to 2 previous errors
Dec 19 10:19:34.729 INFO [stderr] 
Dec 19 10:19:34.729 INFO [stderr] For more information about this error, try `rustc --explain E0119`.
Dec 19 10:19:34.729 INFO [stderr] error: Could not compile `rustc-ap-serialize`.
Dec 19 10:19:34.729 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 10:19:37.636 INFO [stderr] error: build failed
Dec 19 10:19:38.428 INFO running `"docker" "inspect" "0deff82e6ebb9985a9e68ff82d33bc6a48804b97c414ec73837cf69813ca3be2"`
Dec 19 10:19:38.714 INFO running `"docker" "rm" "-f" "0deff82e6ebb9985a9e68ff82d33bc6a48804b97c414ec73837cf69813ca3be2"`
Dec 19 10:19:39.192 INFO [stdout] 0deff82e6ebb9985a9e68ff82d33bc6a48804b97c414ec73837cf69813ca3be2