[INFO] updating cached repository takatori/rust-coin
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/takatori/rust-coin
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/takatori/rust-coin" "work/ex/beta-1.38-1/sources/1.37.0/gh/takatori/rust-coin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/takatori/rust-coin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/takatori/rust-coin" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/takatori/rust-coin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/takatori/rust-coin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93076f35aca5a0a5c849c8bfcbce0fa0c8c2386e
[INFO] sha for GitHub repo takatori/rust-coin: 93076f35aca5a0a5c849c8bfcbce0fa0c8c2386e
[INFO] validating manifest of takatori/rust-coin on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of takatori/rust-coin on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing takatori/rust-coin
[INFO] finished frobbing takatori/rust-coin
[INFO] frobbed toml for takatori/rust-coin written to work/ex/beta-1.38-1/sources/1.37.0/gh/takatori/rust-coin/Cargo.toml
[INFO] started frobbing takatori/rust-coin
[INFO] finished frobbing takatori/rust-coin
[INFO] frobbed toml for takatori/rust-coin written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/takatori/rust-coin/Cargo.toml
[INFO] crate takatori/rust-coin already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing takatori/rust-coin against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/takatori/rust-coin:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 21f390bfb6018d0aa59366216afb21aa408d4a5b7c59003d0a05c0ebf7d58a64
[INFO] running `"docker" "start" "-a" "21f390bfb6018d0aa59366216afb21aa408d4a5b7c59003d0a05c0ebf7d58a64"`
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling futures-cpupool v0.1.6
[INFO] [stderr]    Compiling mime v0.3.3
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling nodrop v0.1.9
[INFO] [stderr]    Compiling generic-array v0.8.3
[INFO] [stderr]    Compiling tokio-io v0.1.3
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling sha2 v0.6.0
[INFO] [stderr]    Compiling tokio-core v0.1.9
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.2
[INFO] [stderr]    Compiling rust-coin v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `sha2::Sha256`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use sha2::Sha256;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digest::Input`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use digest::Input;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::header::ContentLength`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use hyper::header::ContentLength;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Http`
[INFO] [stderr]   --> src/main.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 | use hyper::server::{Http, Request, Response, Service};
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]   --> src/main.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let mut sha256 = Digest::new();
[INFO] [stderr]    |         ---------- consider giving `sha256` a type
[INFO] [stderr] 95 |     sha256.input_str(seed);
[INFO] [stderr]    |     ^^^^^^ cannot infer type
[INFO] [stderr]    |
[INFO] [stderr]    = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:153:23
[INFO] [stderr]     |
[INFO] [stderr] 153 |         block_chain = new_blocks;
[INFO] [stderr]     |                       ^^^^^^^^^^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       expected struct `std::vec::Vec`, found &[Block]
[INFO] [stderr]     |                       help: try using a conversion method: `new_blocks.to_vec()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::vec::Vec<Block>`
[INFO] [stderr]                found type `&[Block]`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:161:57
[INFO] [stderr]     |
[INFO] [stderr] 161 | fn is_valid_chain(block_chain_to_validate: &[Block]) -> bool {
[INFO] [stderr]     |    --------------                                       ^^^^ expected bool, found ()
[INFO] [stderr]     |    |
[INFO] [stderr]     |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `bool`
[INFO] [stderr]                found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0282, E0308.
[INFO] [stderr] For more information about an error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `rust-coin`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "21f390bfb6018d0aa59366216afb21aa408d4a5b7c59003d0a05c0ebf7d58a64"`
[INFO] running `"docker" "rm" "-f" "21f390bfb6018d0aa59366216afb21aa408d4a5b7c59003d0a05c0ebf7d58a64"`
[INFO] [stdout] 21f390bfb6018d0aa59366216afb21aa408d4a5b7c59003d0a05c0ebf7d58a64