Dec 19 21:16:03.905 INFO checking Xanewok/simple_fmt against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:16:03.905 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/Xanewok/simple_fmt:/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 21:16:04.312 INFO [stdout] 619efe7f461fcf9ef5287da15b5066270467b0f14a4ff616578eda98fe8839a4
Dec 19 21:16:04.312 INFO running `"docker" "start" "-a" "619efe7f461fcf9ef5287da15b5066270467b0f14a4ff616578eda98fe8839a4"`
Dec 19 21:16:05.680 INFO [stderr]    Compiling rustc-rayon-core v0.1.1
Dec 19 21:16:05.682 INFO [stderr]     Checking rustc-ap-graphviz v297.0.0
Dec 19 21:16:05.702 INFO [stderr]    Compiling rustc-ap-rustc_target v297.0.0
Dec 19 21:16:05.702 INFO [stderr]     Checking scoped-tls v0.1.2
Dec 19 21:16:05.708 INFO [stderr]    Compiling rustc-ap-syntax v297.0.0
Dec 19 21:16:05.708 INFO [stderr]    Compiling rustfmt-nightly v1.0.0
Dec 19 21:16:05.708 INFO [stderr]     Checking serde v1.0.81
Dec 19 21:16:05.708 INFO [stderr]     Checking ena v0.9.3
Dec 19 21:16:06.264 INFO [stderr]     Checking rustc-ap-rustc_cratesio_shim v297.0.0
Dec 19 21:16:07.464 INFO [stderr]     Checking lock_api v0.1.5
Dec 19 21:16:07.464 INFO [stderr]    Compiling semver v0.9.0
Dec 19 21:16:07.504 INFO [stderr]     Checking rustc-ap-serialize v297.0.0
Dec 19 21:16:07.852 INFO [stderr]     Checking bytecount v0.3.2
Dec 19 21:16:08.184 INFO [stderr]     Checking parking_lot_core v0.2.14
Dec 19 21:16:08.688 INFO [stderr]    Compiling serde_derive v1.0.81
Dec 19 21:16:08.812 INFO [stderr]    Compiling derive-new v0.5.6
Dec 19 21:16:08.996 INFO [stderr]     Checking error-chain v0.12.0
Dec 19 21:16:10.616 INFO [stderr] error[E0119]: conflicting implementations of trait `serialize::Encodable` for type `std::rc::Rc<_>`:
Dec 19 21:16:10.616 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-297.0.0/serialize.rs:893:1
Dec 19 21:16:10.616 INFO [stderr]     |
Dec 19 21:16:10.616 INFO [stderr] 589 | impl<T:Encodable> Encodable for Rc<T> {
Dec 19 21:16:10.616 INFO [stderr]     | ------------------------------------- first implementation here
Dec 19 21:16:10.616 INFO [stderr] ...
Dec 19 21:16:10.616 INFO [stderr] 893 | impl<T: ?Sized + UseSpecializedEncodable> Encodable for T {
Dec 19 21:16:10.616 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::rc::Rc<_>`
Dec 19 21:16:10.617 INFO [stderr]     |
Dec 19 21:16:10.617 INFO [stderr]     = note: downstream crates may implement trait `serialize::UseSpecializedEncodable` for type `std::rc::Rc<_>`
Dec 19 21:16:10.617 INFO [stderr] 
Dec 19 21:16:10.617 INFO [stderr] error[E0119]: conflicting implementations of trait `serialize::Decodable` for type `std::rc::Rc<_>`:
Dec 19 21:16:10.617 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-297.0.0/serialize.rs:908:1
Dec 19 21:16:10.617 INFO [stderr]     |
Dec 19 21:16:10.617 INFO [stderr] 595 | impl<T:Decodable> Decodable for Rc<T> {
Dec 19 21:16:10.617 INFO [stderr]     | ------------------------------------- first implementation here
Dec 19 21:16:10.617 INFO [stderr] ...
Dec 19 21:16:10.617 INFO [stderr] 908 | impl<T: UseSpecializedDecodable> Decodable for T {
Dec 19 21:16:10.617 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::rc::Rc<_>`
Dec 19 21:16:10.628 INFO [stderr]     |
Dec 19 21:16:10.628 INFO [stderr]     = note: downstream crates may implement trait `serialize::UseSpecializedDecodable` for type `std::rc::Rc<_>`
Dec 19 21:16:10.628 INFO [stderr] 
Dec 19 21:16:10.864 INFO [stderr] error: aborting due to 2 previous errors
Dec 19 21:16:10.864 INFO [stderr] 
Dec 19 21:16:10.864 INFO [stderr] For more information about this error, try `rustc --explain E0119`.
Dec 19 21:16:10.901 INFO [stderr] error: Could not compile `rustc-ap-serialize`.
Dec 19 21:16:10.901 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 21:16:27.626 INFO [stderr] error: build failed
Dec 19 21:16:28.868 INFO running `"docker" "inspect" "619efe7f461fcf9ef5287da15b5066270467b0f14a4ff616578eda98fe8839a4"`
Dec 19 21:16:29.178 INFO running `"docker" "rm" "-f" "619efe7f461fcf9ef5287da15b5066270467b0f14a4ff616578eda98fe8839a4"`
Dec 19 21:16:29.458 INFO [stdout] 619efe7f461fcf9ef5287da15b5066270467b0f14a4ff616578eda98fe8839a4