[INFO] updating cached repository hannahellis4242/sudoku_solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hannahellis4242/sudoku_solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hannahellis4242/sudoku_solver" "work/ex/beta-1.38-1/sources/1.37.0/gh/hannahellis4242/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hannahellis4242/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hannahellis4242/sudoku_solver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 71a749e934a0d9f6b468f9e346303f18d6464372
[INFO] sha for GitHub repo hannahellis4242/sudoku_solver: 71a749e934a0d9f6b468f9e346303f18d6464372
[INFO] validating manifest of hannahellis4242/sudoku_solver 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 hannahellis4242/sudoku_solver 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 hannahellis4242/sudoku_solver
[INFO] finished frobbing hannahellis4242/sudoku_solver
[INFO] frobbed toml for hannahellis4242/sudoku_solver written to work/ex/beta-1.38-1/sources/1.37.0/gh/hannahellis4242/sudoku_solver/Cargo.toml
[INFO] started frobbing hannahellis4242/sudoku_solver
[INFO] finished frobbing hannahellis4242/sudoku_solver
[INFO] frobbed toml for hannahellis4242/sudoku_solver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver/Cargo.toml
[INFO] crate hannahellis4242/sudoku_solver 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hannahellis4242/sudoku_solver/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing hannahellis4242/sudoku_solver against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 57ee4049f41b2f742e266ec631255e386a6c694f296c072bc82bf0dc4498b44e
[INFO] running `"docker" "start" "-a" "57ee4049f41b2f742e266ec631255e386a6c694f296c072bc82bf0dc4498b44e"`
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling jsonway v2.0.0
[INFO] [stderr]    Compiling valico v2.4.2
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling sudoku_solver2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `helper` is imported redundantly
[INFO] [stderr]   --> src/sudoku/mod.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 31 | mod helper;
[INFO] [stderr]    | ----------- the item `helper` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 35 |     use sudoku::helper;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:153:23
[INFO] [stderr]     |
[INFO] [stderr] 153 |     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Self::Response, Error = Self::Error>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.64s
[INFO] running `"docker" "inspect" "57ee4049f41b2f742e266ec631255e386a6c694f296c072bc82bf0dc4498b44e"`
[INFO] running `"docker" "rm" "-f" "57ee4049f41b2f742e266ec631255e386a6c694f296c072bc82bf0dc4498b44e"`
[INFO] [stdout] 57ee4049f41b2f742e266ec631255e386a6c694f296c072bc82bf0dc4498b44e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 43454abcdbd9b07939eb4b14d4d16aad14335f06dda3b357950a274652cbb7de
[INFO] running `"docker" "start" "-a" "43454abcdbd9b07939eb4b14d4d16aad14335f06dda3b357950a274652cbb7de"`
[INFO] [stderr]    Compiling sudoku_solver2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `helper` is imported redundantly
[INFO] [stderr]   --> src/sudoku/mod.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 31 | mod helper;
[INFO] [stderr]    | ----------- the item `helper` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 35 |     use sudoku::helper;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:153:23
[INFO] [stderr]     |
[INFO] [stderr] 153 |     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Self::Response, Error = Self::Error>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "43454abcdbd9b07939eb4b14d4d16aad14335f06dda3b357950a274652cbb7de"`
[INFO] running `"docker" "rm" "-f" "43454abcdbd9b07939eb4b14d4d16aad14335f06dda3b357950a274652cbb7de"`
[INFO] [stdout] 43454abcdbd9b07939eb4b14d4d16aad14335f06dda3b357950a274652cbb7de
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hannahellis4242/sudoku_solver:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] c68eb65d92ea4968aadff7d2d64c16d574017d26a630aab4485dd0043ab27cfe
[INFO] running `"docker" "start" "-a" "c68eb65d92ea4968aadff7d2d64c16d574017d26a630aab4485dd0043ab27cfe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku_solver2-f4bb8c54dc36a083
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c68eb65d92ea4968aadff7d2d64c16d574017d26a630aab4485dd0043ab27cfe"`
[INFO] running `"docker" "rm" "-f" "c68eb65d92ea4968aadff7d2d64c16d574017d26a630aab4485dd0043ab27cfe"`
[INFO] [stdout] c68eb65d92ea4968aadff7d2d64c16d574017d26a630aab4485dd0043ab27cfe