[INFO] cloning repository https://github.com/jsalzbergedu/example_kani
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsalzbergedu/example_kani" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsalzbergedu%2Fexample_kani", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsalzbergedu%2Fexample_kani'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a23454bd6c11798e1432d057254df14002db253b
[INFO] testing jsalzbergedu/example_kani against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsalzbergedu%2Fexample_kani" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/jsalzbergedu/example_kani
[INFO] finished tweaking git repo https://github.com/jsalzbergedu/example_kani
[INFO] tweaked toml for git repo https://github.com/jsalzbergedu/example_kani written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jsalzbergedu/example_kani on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jsalzbergedu/example_kani already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46a26a44ee9a56c416b5dded36ecb4bacd2de7e24355c9865977820359e47798
[INFO] running `Command { std: "docker" "start" "-a" "46a26a44ee9a56c416b5dded36ecb4bacd2de7e24355c9865977820359e47798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46a26a44ee9a56c416b5dded36ecb4bacd2de7e24355c9865977820359e47798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a26a44ee9a56c416b5dded36ecb4bacd2de7e24355c9865977820359e47798", kill_on_drop: false }`
[INFO] [stdout] 46a26a44ee9a56c416b5dded36ecb4bacd2de7e24355c9865977820359e47798
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30d99e34503dc768c419ab6a521e2d3aba05fd7615f95ed7ea4202bc02ce7489
[INFO] running `Command { std: "docker" "start" "-a" "30d99e34503dc768c419ab6a521e2d3aba05fd7615f95ed7ea4202bc02ce7489", kill_on_drop: false }`
[INFO] [stderr]    Compiling baby v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `kani`
[INFO] [stdout]   --> src/main.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[kani::proof_for_contract(modify)]
[INFO] [stdout]    |   ^^^^ use of unresolved module or unlinked crate `kani`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `kani`
[INFO] [stdout]   --> src/main.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[kani::requires(arr[idx] == 1)]
[INFO] [stdout]    |   ^^^^ use of unresolved module or unlinked crate `kani`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `kani`
[INFO] [stdout]   --> src/main.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[kani::modifies(&arr[infinite_looper()])]
[INFO] [stdout]    |   ^^^^ use of unresolved module or unlinked crate `kani`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `kani`
[INFO] [stdout]   --> src/main.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[kani::ensures(arr[idx] == 2)]
[INFO] [stdout]    |   ^^^^ use of unresolved module or unlinked crate `kani`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     loop {};
[INFO] [stdout]   |     ------- any code following this expression is unreachable
[INFO] [stdout] 9 |     1
[INFO] [stdout]   |     ^ unreachable expression
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `baby` (bin "baby") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "30d99e34503dc768c419ab6a521e2d3aba05fd7615f95ed7ea4202bc02ce7489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d99e34503dc768c419ab6a521e2d3aba05fd7615f95ed7ea4202bc02ce7489", kill_on_drop: false }`
[INFO] [stdout] 30d99e34503dc768c419ab6a521e2d3aba05fd7615f95ed7ea4202bc02ce7489