[INFO] updating cached repository wchoco/lab_tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wchoco/lab_tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wchoco/lab_tutorial" "work/ex/beta-1.37-6/sources/1.36.0/gh/wchoco/lab_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/wchoco/lab_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wchoco/lab_tutorial" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wchoco/lab_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wchoco/lab_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 77ebe1a0097b68d3f35e4462e0eb734ba7367a60
[INFO] sha for GitHub repo wchoco/lab_tutorial: 77ebe1a0097b68d3f35e4462e0eb734ba7367a60
[INFO] validating manifest of wchoco/lab_tutorial 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 wchoco/lab_tutorial 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 wchoco/lab_tutorial
[INFO] finished frobbing wchoco/lab_tutorial
[INFO] frobbed toml for wchoco/lab_tutorial written to work/ex/beta-1.37-6/sources/1.36.0/gh/wchoco/lab_tutorial/Cargo.toml
[INFO] started frobbing wchoco/lab_tutorial
[INFO] finished frobbing wchoco/lab_tutorial
[INFO] frobbed toml for wchoco/lab_tutorial written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wchoco/lab_tutorial/Cargo.toml
[INFO] crate wchoco/lab_tutorial 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing wchoco/lab_tutorial 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-0/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/wchoco/lab_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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a799f42cd0346de05ca866bd8ead17835592c42b4018a699bbedf603ccb94e12
[INFO] running `"docker" "start" "-a" "a799f42cd0346de05ca866bd8ead17835592c42b4018a699bbedf603ccb94e12"`
[INFO] [stderr]    Compiling lab_tutorial v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `"docker" "inspect" "a799f42cd0346de05ca866bd8ead17835592c42b4018a699bbedf603ccb94e12"`
[INFO] running `"docker" "rm" "-f" "a799f42cd0346de05ca866bd8ead17835592c42b4018a699bbedf603ccb94e12"`
[INFO] [stdout] a799f42cd0346de05ca866bd8ead17835592c42b4018a699bbedf603ccb94e12
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/wchoco/lab_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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 300f7a367e92508fd833ce4b49409854ecdfb96a36499466a971a9875b0fa447
[INFO] running `"docker" "start" "-a" "300f7a367e92508fd833ce4b49409854ecdfb96a36499466a971a9875b0fa447"`
[INFO] [stderr]    Compiling lab_tutorial v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "300f7a367e92508fd833ce4b49409854ecdfb96a36499466a971a9875b0fa447"`
[INFO] running `"docker" "rm" "-f" "300f7a367e92508fd833ce4b49409854ecdfb96a36499466a971a9875b0fa447"`
[INFO] [stdout] 300f7a367e92508fd833ce4b49409854ecdfb96a36499466a971a9875b0fa447
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/wchoco/lab_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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] ee438cf4529b43c576d55ea2ae9e85706e9d02cfb2981d2a5ed74ad8c0caa84a
[INFO] running `"docker" "start" "-a" "ee438cf4529b43c576d55ea2ae9e85706e9d02cfb2981d2a5ed74ad8c0caa84a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lab_tutorial-a9e9168841cad055
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lab_tutorial-974b66ba6867845f
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests lab_tutorial
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [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" "ee438cf4529b43c576d55ea2ae9e85706e9d02cfb2981d2a5ed74ad8c0caa84a"`
[INFO] running `"docker" "rm" "-f" "ee438cf4529b43c576d55ea2ae9e85706e9d02cfb2981d2a5ed74ad8c0caa84a"`
[INFO] [stdout] ee438cf4529b43c576d55ea2ae9e85706e9d02cfb2981d2a5ed74ad8c0caa84a