[INFO] updating cached repository grenade/rust-tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/grenade/rust-tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/grenade/rust-tutorial" "work/ex/beta-1.38-1/sources/1.37.0/gh/grenade/rust-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/grenade/rust-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/grenade/rust-tutorial" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 38b7a8323404308ee27ae3967fa7388e65c1b48b
[INFO] sha for GitHub repo grenade/rust-tutorial: 38b7a8323404308ee27ae3967fa7388e65c1b48b
[INFO] validating manifest of grenade/rust-tutorial 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 grenade/rust-tutorial 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 grenade/rust-tutorial
[INFO] removed workspace from grenade/rust-tutorial
[INFO] finished frobbing grenade/rust-tutorial
[INFO] frobbed toml for grenade/rust-tutorial written to work/ex/beta-1.38-1/sources/1.37.0/gh/grenade/rust-tutorial/Cargo.toml
[INFO] started frobbing grenade/rust-tutorial
[INFO] removed workspace from grenade/rust-tutorial
[INFO] finished frobbing grenade/rust-tutorial
[INFO] frobbed toml for grenade/rust-tutorial written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial/Cargo.toml
[INFO] crate grenade/rust-tutorial 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/grenade/rust-tutorial/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 grenade/rust-tutorial against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 11ba8faad55c30973c75d1ed32cb9dc3b0408dd68a56aebb5cab10947fe083b4
[INFO] running `"docker" "start" "-a" "11ba8faad55c30973c75d1ed32cb9dc3b0408dd68a56aebb5cab10947fe083b4"`
[INFO] [stderr]    Compiling tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "11ba8faad55c30973c75d1ed32cb9dc3b0408dd68a56aebb5cab10947fe083b4"`
[INFO] running `"docker" "rm" "-f" "11ba8faad55c30973c75d1ed32cb9dc3b0408dd68a56aebb5cab10947fe083b4"`
[INFO] [stdout] 11ba8faad55c30973c75d1ed32cb9dc3b0408dd68a56aebb5cab10947fe083b4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4d72086796f7f81daa42265fd3d58289fb15ba36ad5929eeff98b69b5adf1a1f
[INFO] running `"docker" "start" "-a" "4d72086796f7f81daa42265fd3d58289fb15ba36ad5929eeff98b69b5adf1a1f"`
[INFO] [stderr]    Compiling tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "4d72086796f7f81daa42265fd3d58289fb15ba36ad5929eeff98b69b5adf1a1f"`
[INFO] running `"docker" "rm" "-f" "4d72086796f7f81daa42265fd3d58289fb15ba36ad5929eeff98b69b5adf1a1f"`
[INFO] [stdout] 4d72086796f7f81daa42265fd3d58289fb15ba36ad5929eeff98b69b5adf1a1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grenade/rust-tutorial:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 45d80d239fa5fcfaa6e9307b274487e9e447502b70aaacfb5c6ba647d0eca08b
[INFO] running `"docker" "start" "-a" "45d80d239fa5fcfaa6e9307b274487e9e447502b70aaacfb5c6ba647d0eca08b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tutorial-e5dcecdc5c17db7c
[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" "45d80d239fa5fcfaa6e9307b274487e9e447502b70aaacfb5c6ba647d0eca08b"`
[INFO] running `"docker" "rm" "-f" "45d80d239fa5fcfaa6e9307b274487e9e447502b70aaacfb5c6ba647d0eca08b"`
[INFO] [stdout] 45d80d239fa5fcfaa6e9307b274487e9e447502b70aaacfb5c6ba647d0eca08b