[INFO] updating cached repository birkenfeld/kenken-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/birkenfeld/kenken-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/birkenfeld/kenken-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/birkenfeld/kenken-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/birkenfeld/kenken-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/birkenfeld/kenken-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3c8dc0d83bfba928d088170c452a8483fa8b8295
[INFO] sha for GitHub repo birkenfeld/kenken-rs: 3c8dc0d83bfba928d088170c452a8483fa8b8295
[INFO] validating manifest of birkenfeld/kenken-rs 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 birkenfeld/kenken-rs 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 birkenfeld/kenken-rs
[INFO] finished frobbing birkenfeld/kenken-rs
[INFO] frobbed toml for birkenfeld/kenken-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs/Cargo.toml
[INFO] started frobbing birkenfeld/kenken-rs
[INFO] finished frobbing birkenfeld/kenken-rs
[INFO] frobbed toml for birkenfeld/kenken-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/birkenfeld/kenken-rs/Cargo.toml
[INFO] crate birkenfeld/kenken-rs 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 birkenfeld/kenken-rs 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs:/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] 78d040bc5d2b3f389a4f18eadf8a76d4552492ff232a2794f79c68ac750d39fd
[INFO] running `"docker" "start" "-a" "78d040bc5d2b3f389a4f18eadf8a76d4552492ff232a2794f79c68ac750d39fd"`
[INFO] [stderr]    Compiling kenken v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:53:51
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn load(filename: &str) -> Result<KenKen, Box<Error>> {
[INFO] [stderr]    |                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `"docker" "inspect" "78d040bc5d2b3f389a4f18eadf8a76d4552492ff232a2794f79c68ac750d39fd"`
[INFO] running `"docker" "rm" "-f" "78d040bc5d2b3f389a4f18eadf8a76d4552492ff232a2794f79c68ac750d39fd"`
[INFO] [stdout] 78d040bc5d2b3f389a4f18eadf8a76d4552492ff232a2794f79c68ac750d39fd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs:/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] 8149f30f353ec65130e2045095f82190b7d9804cd563a02f500e2d46fb3e3c1f
[INFO] running `"docker" "start" "-a" "8149f30f353ec65130e2045095f82190b7d9804cd563a02f500e2d46fb3e3c1f"`
[INFO] [stderr]    Compiling kenken v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:53:51
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn load(filename: &str) -> Result<KenKen, Box<Error>> {
[INFO] [stderr]    |                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "8149f30f353ec65130e2045095f82190b7d9804cd563a02f500e2d46fb3e3c1f"`
[INFO] running `"docker" "rm" "-f" "8149f30f353ec65130e2045095f82190b7d9804cd563a02f500e2d46fb3e3c1f"`
[INFO] [stdout] 8149f30f353ec65130e2045095f82190b7d9804cd563a02f500e2d46fb3e3c1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/birkenfeld/kenken-rs:/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"`
[INFO] [stdout] d43f358b6b65ef2e4c853519b8999230618cfacd69094db32f486d3cbce1b96b
[INFO] running `"docker" "start" "-a" "d43f358b6b65ef2e4c853519b8999230618cfacd69094db32f486d3cbce1b96b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/kenken-5e787391dafd1af7
[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" "d43f358b6b65ef2e4c853519b8999230618cfacd69094db32f486d3cbce1b96b"`
[INFO] running `"docker" "rm" "-f" "d43f358b6b65ef2e4c853519b8999230618cfacd69094db32f486d3cbce1b96b"`
[INFO] [stdout] d43f358b6b65ef2e4c853519b8999230618cfacd69094db32f486d3cbce1b96b