[INFO] updating cached repository maxjacobson/monty_hall_problem
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maxjacobson/monty_hall_problem
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maxjacobson/monty_hall_problem" "work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_problem"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_problem'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maxjacobson/monty_hall_problem" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maxjacobson/monty_hall_problem"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maxjacobson/monty_hall_problem'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 69ce698c03ec5bd128fc26106aa48b3214956ab4
[INFO] sha for GitHub repo maxjacobson/monty_hall_problem: 69ce698c03ec5bd128fc26106aa48b3214956ab4
[INFO] validating manifest of maxjacobson/monty_hall_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 maxjacobson/monty_hall_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 maxjacobson/monty_hall_problem
[INFO] finished frobbing maxjacobson/monty_hall_problem
[INFO] frobbed toml for maxjacobson/monty_hall_problem written to work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_problem/Cargo.toml
[INFO] started frobbing maxjacobson/monty_hall_problem
[INFO] finished frobbing maxjacobson/monty_hall_problem
[INFO] frobbed toml for maxjacobson/monty_hall_problem written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maxjacobson/monty_hall_problem/Cargo.toml
[INFO] crate maxjacobson/monty_hall_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 maxjacobson/monty_hall_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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_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] 682a806895442940eb7eb7b63ccc5b0537386a642d85a1843e99ad8a0414d5ad
[INFO] running `"docker" "start" "-a" "682a806895442940eb7eb7b63ccc5b0537386a642d85a1843e99ad8a0414d5ad"`
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling monty_hall_problem v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `"docker" "inspect" "682a806895442940eb7eb7b63ccc5b0537386a642d85a1843e99ad8a0414d5ad"`
[INFO] running `"docker" "rm" "-f" "682a806895442940eb7eb7b63ccc5b0537386a642d85a1843e99ad8a0414d5ad"`
[INFO] [stdout] 682a806895442940eb7eb7b63ccc5b0537386a642d85a1843e99ad8a0414d5ad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_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] f3748cb1f984385b1b262a2c2d36439aea8a93332b7374b813fb01a14d035162
[INFO] running `"docker" "start" "-a" "f3748cb1f984385b1b262a2c2d36439aea8a93332b7374b813fb01a14d035162"`
[INFO] [stderr]    Compiling monty_hall_problem v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "f3748cb1f984385b1b262a2c2d36439aea8a93332b7374b813fb01a14d035162"`
[INFO] running `"docker" "rm" "-f" "f3748cb1f984385b1b262a2c2d36439aea8a93332b7374b813fb01a14d035162"`
[INFO] [stdout] f3748cb1f984385b1b262a2c2d36439aea8a93332b7374b813fb01a14d035162
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maxjacobson/monty_hall_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] 72bad46b664ee402efcb8615b0f384c0da651991b7fa3e6d8a1acdbe5179213d
[INFO] running `"docker" "start" "-a" "72bad46b664ee402efcb8615b0f384c0da651991b7fa3e6d8a1acdbe5179213d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/monty_hall_problem-90b54b0dc00a789a
[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" "72bad46b664ee402efcb8615b0f384c0da651991b7fa3e6d8a1acdbe5179213d"`
[INFO] running `"docker" "rm" "-f" "72bad46b664ee402efcb8615b0f384c0da651991b7fa3e6d8a1acdbe5179213d"`
[INFO] [stdout] 72bad46b664ee402efcb8615b0f384c0da651991b7fa3e6d8a1acdbe5179213d