[INFO] updating cached repository arjunepr/a-simple-rust-exercise
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/arjunepr/a-simple-rust-exercise
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/arjunepr/a-simple-rust-exercise" "work/ex/beta-1.37-6/sources/1.36.0/gh/arjunepr/a-simple-rust-exercise"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/arjunepr/a-simple-rust-exercise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arjunepr/a-simple-rust-exercise" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 55cead71a0bf1c015c0e2e514ca9a68ee4ab7a2a
[INFO] sha for GitHub repo arjunepr/a-simple-rust-exercise: 55cead71a0bf1c015c0e2e514ca9a68ee4ab7a2a
[INFO] validating manifest of arjunepr/a-simple-rust-exercise 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 arjunepr/a-simple-rust-exercise 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 arjunepr/a-simple-rust-exercise
[INFO] finished frobbing arjunepr/a-simple-rust-exercise
[INFO] frobbed toml for arjunepr/a-simple-rust-exercise written to work/ex/beta-1.37-6/sources/1.36.0/gh/arjunepr/a-simple-rust-exercise/Cargo.toml
[INFO] started frobbing arjunepr/a-simple-rust-exercise
[INFO] finished frobbing arjunepr/a-simple-rust-exercise
[INFO] frobbed toml for arjunepr/a-simple-rust-exercise written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise/Cargo.toml
[INFO] crate arjunepr/a-simple-rust-exercise 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arjunepr/a-simple-rust-exercise against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 56d6f2d9d89ac7d7f0f738b400b00833898f536624287ce797a91c745ca62f56
[INFO] running `"docker" "start" "-a" "56d6f2d9d89ac7d7f0f738b400b00833898f536624287ce797a91c745ca62f56"`
[INFO] [stderr]    Compiling text_io v0.1.7
[INFO] [stderr]    Compiling simple_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `"docker" "inspect" "56d6f2d9d89ac7d7f0f738b400b00833898f536624287ce797a91c745ca62f56"`
[INFO] running `"docker" "rm" "-f" "56d6f2d9d89ac7d7f0f738b400b00833898f536624287ce797a91c745ca62f56"`
[INFO] [stdout] 56d6f2d9d89ac7d7f0f738b400b00833898f536624287ce797a91c745ca62f56
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2aca98c08c4b9ad3d0cbb60d0861920d2996dee5cd462318032099841c1d3c10
[INFO] running `"docker" "start" "-a" "2aca98c08c4b9ad3d0cbb60d0861920d2996dee5cd462318032099841c1d3c10"`
[INFO] [stderr]    Compiling simple_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "2aca98c08c4b9ad3d0cbb60d0861920d2996dee5cd462318032099841c1d3c10"`
[INFO] running `"docker" "rm" "-f" "2aca98c08c4b9ad3d0cbb60d0861920d2996dee5cd462318032099841c1d3c10"`
[INFO] [stdout] 2aca98c08c4b9ad3d0cbb60d0861920d2996dee5cd462318032099841c1d3c10
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arjunepr/a-simple-rust-exercise:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 237b80d18a4181abf061179a4ed305b8d1db738df41534fbd6012104ddbede3a
[INFO] running `"docker" "start" "-a" "237b80d18a4181abf061179a4ed305b8d1db738df41534fbd6012104ddbede3a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_project-ceb2c1398dabd587
[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" "237b80d18a4181abf061179a4ed305b8d1db738df41534fbd6012104ddbede3a"`
[INFO] running `"docker" "rm" "-f" "237b80d18a4181abf061179a4ed305b8d1db738df41534fbd6012104ddbede3a"`
[INFO] [stdout] 237b80d18a4181abf061179a4ed305b8d1db738df41534fbd6012104ddbede3a