[INFO] updating cached repository cwbriones/typed-fizzbuzz
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cwbriones/typed-fizzbuzz
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cwbriones/typed-fizzbuzz" "work/ex/beta-1.38-1/sources/1.37.0/gh/cwbriones/typed-fizzbuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cwbriones/typed-fizzbuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cwbriones/typed-fizzbuzz" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cwbriones/typed-fizzbuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cwbriones/typed-fizzbuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e918301471b6f8b3b890d4408ec648576edd58d2
[INFO] sha for GitHub repo cwbriones/typed-fizzbuzz: e918301471b6f8b3b890d4408ec648576edd58d2
[INFO] validating manifest of cwbriones/typed-fizzbuzz 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 cwbriones/typed-fizzbuzz 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 cwbriones/typed-fizzbuzz
[INFO] finished frobbing cwbriones/typed-fizzbuzz
[INFO] frobbed toml for cwbriones/typed-fizzbuzz written to work/ex/beta-1.38-1/sources/1.37.0/gh/cwbriones/typed-fizzbuzz/Cargo.toml
[INFO] started frobbing cwbriones/typed-fizzbuzz
[INFO] finished frobbing cwbriones/typed-fizzbuzz
[INFO] frobbed toml for cwbriones/typed-fizzbuzz written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cwbriones/typed-fizzbuzz/Cargo.toml
[INFO] crate cwbriones/typed-fizzbuzz 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing cwbriones/typed-fizzbuzz 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-2/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/cwbriones/typed-fizzbuzz:/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] 7645d1525bc503fc727ad452d8ee99b6b9acd149fb7ee0fbfd04787a5d7fd9b0
[INFO] running `"docker" "start" "-a" "7645d1525bc503fc727ad452d8ee99b6b9acd149fb7ee0fbfd04787a5d7fd9b0"`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/main.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let _: Program = ();
[INFO] [stderr]   |                      ^^ expected struct `Cons`, found ()
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `Cons<FizzBuzz, Cons<Say<S<Zero>>, Cons<Say<S<S<Zero>>>, Cons<Fizz, Cons<Say<S<S<S<S<Zero>>>>>, Cons<Buzz, Cons<Fizz, Cons<Say<S<S<S<S<S<S<S<Zero>>>>>>>>, Cons<Say<S<S<S<S<S<S<S<S<Zero>>>>>>>>>, Cons<Fizz, Cons<Buzz, Cons<Say<S<S<S<S<S<S<S<S<S<S<S<Zero>>>>>>>>>>>>, Cons<Fizz, Cons<Say<S<S<S<S<S<S<S<S<S<S<S<S<S<Zero>>>>>>>>>>>>>>, Cons<Say<S<S<S<S<S<S<S<S<S<S<S<S<S<S<Zero>>>>>>>>>>>>>>>, Cons<FizzBuzz, Nil>>>>>>>>>>>>>>>>`
[INFO] [stderr]              found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `fizzbuzz`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7645d1525bc503fc727ad452d8ee99b6b9acd149fb7ee0fbfd04787a5d7fd9b0"`
[INFO] running `"docker" "rm" "-f" "7645d1525bc503fc727ad452d8ee99b6b9acd149fb7ee0fbfd04787a5d7fd9b0"`
[INFO] [stdout] 7645d1525bc503fc727ad452d8ee99b6b9acd149fb7ee0fbfd04787a5d7fd9b0