[INFO] updating cached repository https://github.com/bon-chi/pingpong
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 418c6db3ff3408172917d1ba3a913cdcd68265c3
[INFO] testing bon-chi/pingpong against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbon-chi%2Fpingpong" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bon-chi/pingpong on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bon-chi/pingpong
[INFO] finished tweaking git repo https://github.com/bon-chi/pingpong
[INFO] tweaked toml for git repo https://github.com/bon-chi/pingpong written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bon-chi/pingpong already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 41a91fc174e4ece27a8fee457ed3ab8cbe127ea27aa3b938f5978f6d1ba6db2d
[INFO] running `"docker" "start" "-a" "41a91fc174e4ece27a8fee457ed3ab8cbe127ea27aa3b938f5978f6d1ba6db2d"`
[INFO] [stderr]    Compiling bytes v0.2.11
[INFO] [stderr]    Compiling nix v0.3.10
[INFO] [stderr]    Compiling winapi v0.1.23
[INFO] [stderr]    Compiling mio v0.4.4
[INFO] [stderr]    Compiling pingpong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0412]: cannot find type `Slab` in this scope
[INFO] [stderr]  --> src/main.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 |     connections: Slab<Connection>,
[INFO] [stderr]   |                  ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]   |
[INFO] [stderr] 3 | use mio::util::Slab;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Connection` in this scope
[INFO] [stderr]  --> src/main.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 |     connections: Slab<Connection>,
[INFO] [stderr]   |                       ^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0053]: method `ready` has an incompatible type for trait
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     fn ready(&mut self,
[INFO] [stderr] 17 | |              event_loop: &mio::EventLoop<Pong>,
[INFO] [stderr] 18 | |              token: mio::Token,
[INFO] [stderr] 19 | |              events: mio::EventSet) {
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         }
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^ types differ in mutability
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `fn(&mut Pong, &mut mio::EventLoop<Pong>, mio::Token, mio::EventSet)`
[INFO] [stderr]               found type `fn(&mut Pong, &mio::EventLoop<Pong>, mio::Token, mio::EventSet)`
[INFO] [stderr] 
[INFO] [stderr] error[E0063]: missing field `connections` in initializer of `Pong`
[INFO] [stderr]   --> src/main.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |     event_loop.run(&mut Pong { server: server });
[INFO] [stderr]    |                         ^^^^ missing `connections`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0053, E0063, E0412.
[INFO] [stderr] For more information about an error, try `rustc --explain E0053`.
[INFO] [stderr] error: Could not compile `pingpong`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "41a91fc174e4ece27a8fee457ed3ab8cbe127ea27aa3b938f5978f6d1ba6db2d"`
[INFO] running `"docker" "rm" "-f" "41a91fc174e4ece27a8fee457ed3ab8cbe127ea27aa3b938f5978f6d1ba6db2d"`
[INFO] [stdout] 41a91fc174e4ece27a8fee457ed3ab8cbe127ea27aa3b938f5978f6d1ba6db2d