[INFO] updating cached repository darwins-challenge/moonlander-ast-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/darwins-challenge/moonlander-ast-rust
[INFO] [stderr]  * branch              HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/darwins-challenge/moonlander-ast-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/darwins-challenge/moonlander-ast-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/darwins-challenge/moonlander-ast-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/darwins-challenge/moonlander-ast-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea69bee6ca7132db6b057df2a46fff2438c089d3
[INFO] sha for GitHub repo darwins-challenge/moonlander-ast-rust: ea69bee6ca7132db6b057df2a46fff2438c089d3
[INFO] validating manifest of darwins-challenge/moonlander-ast-rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of darwins-challenge/moonlander-ast-rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing darwins-challenge/moonlander-ast-rust
[INFO] finished frobbing darwins-challenge/moonlander-ast-rust
[INFO] frobbed toml for darwins-challenge/moonlander-ast-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust/Cargo.toml
[INFO] started frobbing darwins-challenge/moonlander-ast-rust
[INFO] finished frobbing darwins-challenge/moonlander-ast-rust
[INFO] frobbed toml for darwins-challenge/moonlander-ast-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/darwins-challenge/moonlander-ast-rust/Cargo.toml
[INFO] crate darwins-challenge/moonlander-ast-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing darwins-challenge/moonlander-ast-rust against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 80cd9e484a34252034e2245c987a1c683f2674b5b3278858df533a0157415991
[INFO] running `"docker" "start" "-a" "80cd9e484a34252034e2245c987a1c683f2674b5b3278858df533a0157415991"`
[INFO] [stderr]    Compiling ast v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `"docker" "inspect" "80cd9e484a34252034e2245c987a1c683f2674b5b3278858df533a0157415991"`
[INFO] running `"docker" "rm" "-f" "80cd9e484a34252034e2245c987a1c683f2674b5b3278858df533a0157415991"`
[INFO] [stdout] 80cd9e484a34252034e2245c987a1c683f2674b5b3278858df533a0157415991
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/darwins-challenge/moonlander-ast-rust:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 548508f2356915924f38a006e1dd1ae07fc93c5967d4835b97929c0e5854435f
[INFO] running `"docker" "start" "-a" "548508f2356915924f38a006e1dd1ae07fc93c5967d4835b97929c0e5854435f"`
[INFO] [stderr]    Compiling ast v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/generate.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdout`
[INFO] [stderr]  --> examples/simple-evolve.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::stdout;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `partial_max`, `partial_min`
[INFO] [stderr]   --> examples/simple-evolve.rs:18:24
[INFO] [stderr]    |
[INFO] [stderr] 18 | use ast::num::{square, partial_max, partial_min};
[INFO] [stderr]    |                        ^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `expect` found for type `()` in the current scope
[INFO] [stderr]   --> examples/simple-evolve.rs:96:24
[INFO] [stderr]    |
[INFO] [stderr] 96 |     env_logger::init().expect("Error initializing logger");
[INFO] [stderr]    |                        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `ast`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "548508f2356915924f38a006e1dd1ae07fc93c5967d4835b97929c0e5854435f"`
[INFO] running `"docker" "rm" "-f" "548508f2356915924f38a006e1dd1ae07fc93c5967d4835b97929c0e5854435f"`
[INFO] [stdout] 548508f2356915924f38a006e1dd1ae07fc93c5967d4835b97929c0e5854435f