[INFO] updating cached repository howeih/Day-58-Integer-Exponentiation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-58-Integer-Exponentiation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-58-Integer-Exponentiation" "work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-58-Integer-Exponentiation" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/howeih/Day-58-Integer-Exponentiation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/howeih/Day-58-Integer-Exponentiation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13424c73f5f4c054beeb934e6ab7ecc79d3d0aa6
[INFO] sha for GitHub repo howeih/Day-58-Integer-Exponentiation: 13424c73f5f4c054beeb934e6ab7ecc79d3d0aa6
[INFO] validating manifest of howeih/Day-58-Integer-Exponentiation on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of howeih/Day-58-Integer-Exponentiation on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing howeih/Day-58-Integer-Exponentiation
[INFO] finished frobbing howeih/Day-58-Integer-Exponentiation
[INFO] frobbed toml for howeih/Day-58-Integer-Exponentiation written to work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation/Cargo.toml
[INFO] started frobbing howeih/Day-58-Integer-Exponentiation
[INFO] finished frobbing howeih/Day-58-Integer-Exponentiation
[INFO] frobbed toml for howeih/Day-58-Integer-Exponentiation written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/howeih/Day-58-Integer-Exponentiation/Cargo.toml
[INFO] crate howeih/Day-58-Integer-Exponentiation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing howeih/Day-58-Integer-Exponentiation against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ad9f0866d08ddd80aafca63b84e51b3445e334391982de6f5dc7b841a64c23d4
[INFO] running `"docker" "start" "-a" "ad9f0866d08ddd80aafca63b84e51b3445e334391982de6f5dc7b841a64c23d4"`
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling integer_exponentiation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.48s
[INFO] running `"docker" "inspect" "ad9f0866d08ddd80aafca63b84e51b3445e334391982de6f5dc7b841a64c23d4"`
[INFO] running `"docker" "rm" "-f" "ad9f0866d08ddd80aafca63b84e51b3445e334391982de6f5dc7b841a64c23d4"`
[INFO] [stdout] ad9f0866d08ddd80aafca63b84e51b3445e334391982de6f5dc7b841a64c23d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d2348f84398584c38102263ddf531e7e6ad15df598ba06b0a49f96606932bd83
[INFO] running `"docker" "start" "-a" "d2348f84398584c38102263ddf531e7e6ad15df598ba06b0a49f96606932bd83"`
[INFO] [stderr]    Compiling integer_exponentiation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "d2348f84398584c38102263ddf531e7e6ad15df598ba06b0a49f96606932bd83"`
[INFO] running `"docker" "rm" "-f" "d2348f84398584c38102263ddf531e7e6ad15df598ba06b0a49f96606932bd83"`
[INFO] [stdout] d2348f84398584c38102263ddf531e7e6ad15df598ba06b0a49f96606932bd83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/howeih/Day-58-Integer-Exponentiation:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 9c5de50f84bc565816f8c69bc7108dc92b681a2e9dd92d2697f734e947f44b7d
[INFO] running `"docker" "start" "-a" "9c5de50f84bc565816f8c69bc7108dc92b681a2e9dd92d2697f734e947f44b7d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/integer_exponentiation-d95cd19b2ef9fe10
[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" "9c5de50f84bc565816f8c69bc7108dc92b681a2e9dd92d2697f734e947f44b7d"`
[INFO] running `"docker" "rm" "-f" "9c5de50f84bc565816f8c69bc7108dc92b681a2e9dd92d2697f734e947f44b7d"`
[INFO] [stdout] 9c5de50f84bc565816f8c69bc7108dc92b681a2e9dd92d2697f734e947f44b7d