[INFO] updating cached repository https://github.com/Dizans/rust_book
[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] c6a028c8bd55bffe94e7acc67b5d6633545d51c3
[INFO] testing Dizans/rust_book against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FDizans%2Frust_book" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dizans/rust_book on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Dizans/rust_book
[INFO] finished tweaking git repo https://github.com/Dizans/rust_book
[INFO] tweaked toml for git repo https://github.com/Dizans/rust_book written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Dizans/rust_book already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 3685e67cbf99b92a66810c27befd96c47e4261449f7ab43269c27a8433cf7d15
[INFO] running `"docker" "start" "-a" "3685e67cbf99b92a66810c27befd96c47e4261449f7ab43269c27a8433cf7d15"`
[INFO] [stderr]    Compiling thebook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0422]: cannot find struct, variant or union type `Tweet` in this scope
[INFO] [stderr]    --> src/main.rs:702:5
[INFO] [stderr]     |
[INFO] [stderr] 702 |     Tweet {
[INFO] [stderr]     |     ^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:628:16
[INFO] [stderr]     |
[INFO] [stderr] 628 |             y: other.y,
[INFO] [stderr]     |                ^^^^^^^ expected type parameter, found a different type parameter
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `T`
[INFO] [stderr]                found type `W`
[INFO] [stderr]     = note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
[INFO] [stderr]     = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:626:9
[INFO] [stderr]     |
[INFO] [stderr] 625 |       fn mixup<V,W>(self, other: TUPoint<V,W>) -> TUPoint<T,W>{
[INFO] [stderr]     |                                                   ------------ expected `TUPoint<T, W>` because of return type
[INFO] [stderr] 626 | /         Point{
[INFO] [stderr] 627 | |             x: self.x,
[INFO] [stderr] 628 | |             y: other.y,
[INFO] [stderr] 629 | |         }
[INFO] [stderr]     | |_________^ expected struct `TUPoint`, found struct `Point`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `TUPoint<T, W>`
[INFO] [stderr]                found type `Point<T>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0422.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `thebook`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3685e67cbf99b92a66810c27befd96c47e4261449f7ab43269c27a8433cf7d15"`
[INFO] running `"docker" "rm" "-f" "3685e67cbf99b92a66810c27befd96c47e4261449f7ab43269c27a8433cf7d15"`
[INFO] [stdout] 3685e67cbf99b92a66810c27befd96c47e4261449f7ab43269c27a8433cf7d15