[INFO] updating cached repository muminoff/100-prisoners-problem
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/muminoff/100-prisoners-problem
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/muminoff/100-prisoners-problem" "work/ex/beta-1.38-1/sources/1.37.0/gh/muminoff/100-prisoners-problem"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/muminoff/100-prisoners-problem'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/muminoff/100-prisoners-problem" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/muminoff/100-prisoners-problem"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/muminoff/100-prisoners-problem'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea7cbb290f349392d47b19543053f59237e1ae06
[INFO] sha for GitHub repo muminoff/100-prisoners-problem: ea7cbb290f349392d47b19543053f59237e1ae06
[INFO] validating manifest of muminoff/100-prisoners-problem 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 muminoff/100-prisoners-problem 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 muminoff/100-prisoners-problem
[INFO] finished frobbing muminoff/100-prisoners-problem
[INFO] frobbed toml for muminoff/100-prisoners-problem written to work/ex/beta-1.38-1/sources/1.37.0/gh/muminoff/100-prisoners-problem/Cargo.toml
[INFO] started frobbing muminoff/100-prisoners-problem
[INFO] finished frobbing muminoff/100-prisoners-problem
[INFO] frobbed toml for muminoff/100-prisoners-problem written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/muminoff/100-prisoners-problem/Cargo.toml
[INFO] crate muminoff/100-prisoners-problem 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 muminoff/100-prisoners-problem 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/muminoff/100-prisoners-problem:/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] 47dcccb76f2bac41324eac970d8c302d0c2e55ba2a58c528f645bb0bcbe43dbd
[INFO] running `"docker" "start" "-a" "47dcccb76f2bac41324eac970d8c302d0c2e55ba2a58c528f645bb0bcbe43dbd"`
[INFO] [stderr]    Compiling prisoners v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "47dcccb76f2bac41324eac970d8c302d0c2e55ba2a58c528f645bb0bcbe43dbd"`
[INFO] running `"docker" "rm" "-f" "47dcccb76f2bac41324eac970d8c302d0c2e55ba2a58c528f645bb0bcbe43dbd"`
[INFO] [stdout] 47dcccb76f2bac41324eac970d8c302d0c2e55ba2a58c528f645bb0bcbe43dbd
[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/muminoff/100-prisoners-problem:/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] ce0a56ba4f33d5c4ccb9ef3ea90dd558835a1682545a394272758f8f6492e5bd
[INFO] running `"docker" "start" "-a" "ce0a56ba4f33d5c4ccb9ef3ea90dd558835a1682545a394272758f8f6492e5bd"`
[INFO] [stderr]    Compiling prisoners v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "ce0a56ba4f33d5c4ccb9ef3ea90dd558835a1682545a394272758f8f6492e5bd"`
[INFO] running `"docker" "rm" "-f" "ce0a56ba4f33d5c4ccb9ef3ea90dd558835a1682545a394272758f8f6492e5bd"`
[INFO] [stdout] ce0a56ba4f33d5c4ccb9ef3ea90dd558835a1682545a394272758f8f6492e5bd
[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/muminoff/100-prisoners-problem:/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] 96e967e658f760a0ad230ab4ab827dd57ebd08f55090f3ea46ccd4b43ca5e9ce
[INFO] running `"docker" "start" "-a" "96e967e658f760a0ad230ab4ab827dd57ebd08f55090f3ea46ccd4b43ca5e9ce"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/prisoners-8b008524fd25dded
[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" "96e967e658f760a0ad230ab4ab827dd57ebd08f55090f3ea46ccd4b43ca5e9ce"`
[INFO] running `"docker" "rm" "-f" "96e967e658f760a0ad230ab4ab827dd57ebd08f55090f3ea46ccd4b43ca5e9ce"`
[INFO] [stdout] 96e967e658f760a0ad230ab4ab827dd57ebd08f55090f3ea46ccd4b43ca5e9ce