[INFO] updating cached repository rschifflin/rust-pubsub
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rschifflin/rust-pubsub
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rschifflin/rust-pubsub" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rschifflin/rust-pubsub"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rschifflin/rust-pubsub'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rschifflin/rust-pubsub" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rschifflin/rust-pubsub"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rschifflin/rust-pubsub'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b07e4f397f298b5bfc7e977b2a18db0a64d010e1
[INFO] sha for GitHub repo rschifflin/rust-pubsub: b07e4f397f298b5bfc7e977b2a18db0a64d010e1
[INFO] validating manifest of rschifflin/rust-pubsub on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rschifflin/rust-pubsub on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rschifflin/rust-pubsub
[INFO] finished frobbing rschifflin/rust-pubsub
[INFO] frobbed toml for rschifflin/rust-pubsub written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rschifflin/rust-pubsub/Cargo.toml
[INFO] started frobbing rschifflin/rust-pubsub
[INFO] finished frobbing rschifflin/rust-pubsub
[INFO] frobbed toml for rschifflin/rust-pubsub written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rschifflin/rust-pubsub/Cargo.toml
[INFO] crate rschifflin/rust-pubsub already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rschifflin/rust-pubsub against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rschifflin/rust-pubsub:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 976110bfd91bd37602bd5389cebc61e357fcf10561129bc01fcc2f78cf939f1f
[INFO] running `"docker" "start" "-a" "976110bfd91bd37602bd5389cebc61e357fcf10561129bc01fcc2f78cf939f1f"`
[INFO] [stderr]     Checking pubsub v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0369]: binary operation `+` cannot be applied to type `std::vec::Vec<Event<Channel, Payload>>`
[INFO] [stderr]   --> src/lib.rs:49:33
[INFO] [stderr]    |
[INFO] [stderr] 49 |         self.event_queue = head + &*tail;
[INFO] [stderr]    |                            ---- ^ ------ &[Event<Channel, Payload>]
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            std::vec::Vec<Event<Channel, Payload>>
[INFO] [stderr]    |
[INFO] [stderr]    = note: an implementation of `std::ops::Add` might be missing for `std::vec::Vec<Event<Channel, Payload>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0369`.
[INFO] [stderr] error: Could not compile `pubsub`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0369]: binary operation `+` cannot be applied to type `std::vec::Vec<Event<Channel, Payload>>`
[INFO] [stderr]   --> src/lib.rs:49:33
[INFO] [stderr]    |
[INFO] [stderr] 49 |         self.event_queue = head + &*tail;
[INFO] [stderr]    |                            ---- ^ ------ &[Event<Channel, Payload>]
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            std::vec::Vec<Event<Channel, Payload>>
[INFO] [stderr]    |
[INFO] [stderr]    = note: an implementation of `std::ops::Add` might be missing for `std::vec::Vec<Event<Channel, Payload>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0369`.
[INFO] [stderr] error: Could not compile `pubsub`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "976110bfd91bd37602bd5389cebc61e357fcf10561129bc01fcc2f78cf939f1f"`
[INFO] running `"docker" "rm" "-f" "976110bfd91bd37602bd5389cebc61e357fcf10561129bc01fcc2f78cf939f1f"`
[INFO] [stdout] 976110bfd91bd37602bd5389cebc61e357fcf10561129bc01fcc2f78cf939f1f