[INFO] crate xproto 1.1.4 is already in cache
[INFO] extracting crate xproto 1.1.4 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/xproto/1.1.4
[INFO] extracting crate xproto 1.1.4 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/xproto/1.1.4
[INFO] validating manifest of xproto-1.1.4 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of xproto-1.1.4 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing xproto-1.1.4
[INFO] finished frobbing xproto-1.1.4
[INFO] frobbed toml for xproto-1.1.4 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/xproto/1.1.4/Cargo.toml
[INFO] started frobbing xproto-1.1.4
[INFO] finished frobbing xproto-1.1.4
[INFO] frobbed toml for xproto-1.1.4 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/xproto/1.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking xproto-1.1.4 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/xproto/1.1.4:/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"`
[INFO] [stdout] 2e767eff69026601e0c006f5eda1a4a8fcc01cb7b7e6e7baabfe472b4112ce4f
[INFO] running `"docker" "start" "-a" "2e767eff69026601e0c006f5eda1a4a8fcc01cb7b7e6e7baabfe472b4112ce4f"`
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]     Checking protocol v1.0.3
[INFO] [stderr] error[E0119]: conflicting implementations of trait `parcel::Parcel` for type `std::rc::Rc<_>`:
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/protocol-1.0.3/src/types/smart_ptr.rs:11:9
[INFO] [stderr]     |
[INFO] [stderr] 11  |           impl<T: Parcel> Parcel for $ty<T>
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::rc::Rc<_>`
[INFO] [stderr] ...
[INFO] [stderr] 31  |   impl_smart_ptr_type!(Rc);
[INFO] [stderr]     |   ------------------------- in this macro invocation
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/protocol-1.0.3/src/high_level.rs:86:1
[INFO] [stderr]     |
[INFO] [stderr] 86  | / impl<H> Parcel for H
[INFO] [stderr] 87  | |     where H: HighLevel {
[INFO] [stderr] 88  | |     const TYPE_NAME: &'static str = "HighLevel";
[INFO] [stderr] 89  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 103 | |     }
[INFO] [stderr] 104 | | }
[INFO] [stderr]     | |_- first implementation here
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `high_level::HighLevel` for type `std::rc::Rc<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0119]: conflicting implementations of trait `parcel::Parcel` for type `std::sync::Arc<_>`:
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/protocol-1.0.3/src/types/smart_ptr.rs:11:9
[INFO] [stderr]     |
[INFO] [stderr] 11  |           impl<T: Parcel> Parcel for $ty<T>
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::sync::Arc<_>`
[INFO] [stderr] ...
[INFO] [stderr] 32  |   impl_smart_ptr_type!(Arc);
[INFO] [stderr]     |   -------------------------- in this macro invocation
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/protocol-1.0.3/src/high_level.rs:86:1
[INFO] [stderr]     |
[INFO] [stderr] 86  | / impl<H> Parcel for H
[INFO] [stderr] 87  | |     where H: HighLevel {
[INFO] [stderr] 88  | |     const TYPE_NAME: &'static str = "HighLevel";
[INFO] [stderr] 89  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 103 | |     }
[INFO] [stderr] 104 | | }
[INFO] [stderr]     | |_- first implementation here
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `high_level::HighLevel` for type `std::sync::Arc<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0119`.
[INFO] [stderr] error: Could not compile `protocol`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2e767eff69026601e0c006f5eda1a4a8fcc01cb7b7e6e7baabfe472b4112ce4f"`
[INFO] running `"docker" "rm" "-f" "2e767eff69026601e0c006f5eda1a4a8fcc01cb7b7e6e7baabfe472b4112ce4f"`
[INFO] [stdout] 2e767eff69026601e0c006f5eda1a4a8fcc01cb7b7e6e7baabfe472b4112ce4f