[INFO] cloning repository https://github.com/cwbriones/typed-fizzbuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cwbriones/typed-fizzbuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwbriones%2Ftyped-fizzbuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwbriones%2Ftyped-fizzbuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e918301471b6f8b3b890d4408ec648576edd58d2
[INFO] testing cwbriones/typed-fizzbuzz against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwbriones%2Ftyped-fizzbuzz" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cwbriones/typed-fizzbuzz on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cwbriones/typed-fizzbuzz
[INFO] finished tweaking git repo https://github.com/cwbriones/typed-fizzbuzz
[INFO] tweaked toml for git repo https://github.com/cwbriones/typed-fizzbuzz written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/cwbriones/typed-fizzbuzz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4886ef40d5593f3fef696e84079c2692d1cea474c3e080ded03139f4f5ba093e
[INFO] running `Command { std: "docker" "start" "-a" "4886ef40d5593f3fef696e84079c2692d1cea474c3e080ded03139f4f5ba093e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4886ef40d5593f3fef696e84079c2692d1cea474c3e080ded03139f4f5ba093e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4886ef40d5593f3fef696e84079c2692d1cea474c3e080ded03139f4f5ba093e", kill_on_drop: false }`
[INFO] [stdout] 4886ef40d5593f3fef696e84079c2692d1cea474c3e080ded03139f4f5ba093e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 619dbda44202346ae3329567d6d0b02c0f49a6f95832204f6f61e0d41de0ac24
[INFO] running `Command { std: "docker" "start" "-a" "619dbda44202346ae3329567d6d0b02c0f49a6f95832204f6f61e0d41de0ac24", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fizzbuzz` due to 4 previous errors
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _: Program = ();
[INFO] [stdout]   |            -------   ^^ expected struct `Cons`, found `()`
[INFO] [stdout]   |            |
[INFO] [stdout]   |            expected due to this
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected struct `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] [stdout]           found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "619dbda44202346ae3329567d6d0b02c0f49a6f95832204f6f61e0d41de0ac24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "619dbda44202346ae3329567d6d0b02c0f49a6f95832204f6f61e0d41de0ac24", kill_on_drop: false }`
[INFO] [stdout] 619dbda44202346ae3329567d6d0b02c0f49a6f95832204f6f61e0d41de0ac24