[INFO] updating cached repository mschmo/guessing_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mschmo/guessing_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mschmo/guessing_game" "work/ex/beta-1.38-1/sources/1.37.0/gh/mschmo/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mschmo/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mschmo/guessing_game" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mschmo/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mschmo/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 16505e408bb23d8d7d9ad4ffe0ca65a3a057bf64
[INFO] sha for GitHub repo mschmo/guessing_game: 16505e408bb23d8d7d9ad4ffe0ca65a3a057bf64
[INFO] validating manifest of mschmo/guessing_game 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 mschmo/guessing_game 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 mschmo/guessing_game
[INFO] finished frobbing mschmo/guessing_game
[INFO] frobbed toml for mschmo/guessing_game written to work/ex/beta-1.38-1/sources/1.37.0/gh/mschmo/guessing_game/Cargo.toml
[INFO] started frobbing mschmo/guessing_game
[INFO] finished frobbing mschmo/guessing_game
[INFO] frobbed toml for mschmo/guessing_game written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mschmo/guessing_game/Cargo.toml
[INFO] crate mschmo/guessing_game 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 mschmo/guessing_game against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mschmo/guessing_game:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1ea8afa4e0fda2202d646c7da5cab17addf563bf788ae253ddd7aa60e65011f1
[INFO] running `"docker" "start" "-a" "1ea8afa4e0fda2202d646c7da5cab17addf563bf788ae253ddd7aa60e65011f1"`
[INFO] [stderr]    Compiling libc v0.2.8
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `"docker" "inspect" "1ea8afa4e0fda2202d646c7da5cab17addf563bf788ae253ddd7aa60e65011f1"`
[INFO] running `"docker" "rm" "-f" "1ea8afa4e0fda2202d646c7da5cab17addf563bf788ae253ddd7aa60e65011f1"`
[INFO] [stdout] 1ea8afa4e0fda2202d646c7da5cab17addf563bf788ae253ddd7aa60e65011f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mschmo/guessing_game:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8d626dd261b244fc7af0032cb02782708b96fa40a7b7ad9037afe76b744b8224
[INFO] running `"docker" "start" "-a" "8d626dd261b244fc7af0032cb02782708b96fa40a7b7ad9037afe76b744b8224"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `guessing_game`
[INFO] [stderr]  --> tests/test_helpers.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate guessing_game;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `guessing_game`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8d626dd261b244fc7af0032cb02782708b96fa40a7b7ad9037afe76b744b8224"`
[INFO] running `"docker" "rm" "-f" "8d626dd261b244fc7af0032cb02782708b96fa40a7b7ad9037afe76b744b8224"`
[INFO] [stdout] 8d626dd261b244fc7af0032cb02782708b96fa40a7b7ad9037afe76b744b8224