[INFO] updating cached repository nordberg/rust-factorization
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nordberg/rust-factorization
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nordberg/rust-factorization" "work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nordberg/rust-factorization" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nordberg/rust-factorization"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nordberg/rust-factorization'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 16adb817add98ed3b70adf372e36c6eaed75e0b7
[INFO] sha for GitHub repo nordberg/rust-factorization: 16adb817add98ed3b70adf372e36c6eaed75e0b7
[INFO] validating manifest of nordberg/rust-factorization 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 nordberg/rust-factorization 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 nordberg/rust-factorization
[INFO] finished frobbing nordberg/rust-factorization
[INFO] frobbed toml for nordberg/rust-factorization written to work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization/Cargo.toml
[INFO] started frobbing nordberg/rust-factorization
[INFO] finished frobbing nordberg/rust-factorization
[INFO] frobbed toml for nordberg/rust-factorization written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nordberg/rust-factorization/Cargo.toml
[INFO] crate nordberg/rust-factorization 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization/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[INFO] the lockfile is outdated, regenerating it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" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 nordberg/rust-factorization 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization:/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] 68e9858ff455f2010cea69c0f0cf60233633fc7ab87c06e8f77d1b008b2b649c
[INFO] running `"docker" "start" "-a" "68e9858ff455f2010cea69c0f0cf60233633fc7ab87c06e8f77d1b008b2b649c"`
[INFO] [stderr]    Compiling factorization v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "68e9858ff455f2010cea69c0f0cf60233633fc7ab87c06e8f77d1b008b2b649c"`
[INFO] running `"docker" "rm" "-f" "68e9858ff455f2010cea69c0f0cf60233633fc7ab87c06e8f77d1b008b2b649c"`
[INFO] [stdout] 68e9858ff455f2010cea69c0f0cf60233633fc7ab87c06e8f77d1b008b2b649c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nordberg/rust-factorization:/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] 44904728fc19a34e7db5db05efe1d326f599040d859ac6ade9c5fe6ef648411a
[INFO] running `"docker" "start" "-a" "44904728fc19a34e7db5db05efe1d326f599040d859ac6ade9c5fe6ef648411a"`
[INFO] [stderr]    Compiling factorization v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:20:31
[INFO] [stderr]    |
[INFO] [stderr] 20 |     assert_eq!(factorization::build_factor_string(9), "3^2");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:21:31
[INFO] [stderr]    |
[INFO] [stderr] 21 |     assert_eq!(factorization::build_factor_string(25), "5^2");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 |     assert_eq!(factorization::build_factor_string(64), "8^2");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:27:31
[INFO] [stderr]    |
[INFO] [stderr] 27 |     assert_eq!(factorization::build_factor_string(2), "2^1");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:28:31
[INFO] [stderr]    |
[INFO] [stderr] 28 |     assert_eq!(factorization::build_factor_string(4), "2^2");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:29:31
[INFO] [stderr]    |
[INFO] [stderr] 29 |     assert_eq!(factorization::build_factor_string(8), "2^3");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 |     assert_eq!(factorization::build_factor_string(16), "2^4");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:31:31
[INFO] [stderr]    |
[INFO] [stderr] 31 |     assert_eq!(factorization::build_factor_string(32), "2^5");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 |     assert_eq!(factorization::build_factor_string(64), "2^6");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `build_factor_string` in module `factorization`
[INFO] [stderr]   --> tests/lib.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     assert_eq!(factorization::build_factor_string(128), "2^7");
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^ not found in `factorization`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `factorization`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "44904728fc19a34e7db5db05efe1d326f599040d859ac6ade9c5fe6ef648411a"`
[INFO] running `"docker" "rm" "-f" "44904728fc19a34e7db5db05efe1d326f599040d859ac6ade9c5fe6ef648411a"`
[INFO] [stdout] 44904728fc19a34e7db5db05efe1d326f599040d859ac6ade9c5fe6ef648411a