[INFO] updating cached repository TakaiKinoko/CPP_smart_pointers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TakaiKinoko/CPP_smart_pointers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TakaiKinoko/CPP_smart_pointers" "work/ex/beta-1.38-1/sources/1.37.0/gh/TakaiKinoko/CPP_smart_pointers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TakaiKinoko/CPP_smart_pointers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TakaiKinoko/CPP_smart_pointers" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TakaiKinoko/CPP_smart_pointers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TakaiKinoko/CPP_smart_pointers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b1ea67305721e4980c376db10137eb6c02387354
[INFO] sha for GitHub repo TakaiKinoko/CPP_smart_pointers: b1ea67305721e4980c376db10137eb6c02387354
[INFO] validating manifest of TakaiKinoko/CPP_smart_pointers 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 TakaiKinoko/CPP_smart_pointers 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 TakaiKinoko/CPP_smart_pointers
[INFO] finished frobbing TakaiKinoko/CPP_smart_pointers
[INFO] frobbed toml for TakaiKinoko/CPP_smart_pointers written to work/ex/beta-1.38-1/sources/1.37.0/gh/TakaiKinoko/CPP_smart_pointers/Cargo.toml
[INFO] started frobbing TakaiKinoko/CPP_smart_pointers
[INFO] finished frobbing TakaiKinoko/CPP_smart_pointers
[INFO] frobbed toml for TakaiKinoko/CPP_smart_pointers written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TakaiKinoko/CPP_smart_pointers/Cargo.toml
[INFO] crate TakaiKinoko/CPP_smart_pointers 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 TakaiKinoko/CPP_smart_pointers 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-2/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/TakaiKinoko/CPP_smart_pointers:/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] d3b59522a974178b89d861fd6fb3dc05cd4ba6e4424a146915ad3ebca900b419
[INFO] running `"docker" "start" "-a" "d3b59522a974178b89d861fd6fb3dc05cd4ba6e4424a146915ad3ebca900b419"`
[INFO] [stderr]    Compiling pl-class13 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/main.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn take(v: Vec<i32>) {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0597]: `v` does not live long enough
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |         w = &v;
[INFO] [stderr]    |         ^^^^^^ borrowed value does not live long enough
[INFO] [stderr] 11 |     }
[INFO] [stderr]    |     - `v` dropped here while still borrowed
[INFO] [stderr] ...
[INFO] [stderr] 14 |     println!("Hello, world: {}", w.len());
[INFO] [stderr]    |                                  - borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0597`.
[INFO] [stderr] error: Could not compile `pl-class13`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d3b59522a974178b89d861fd6fb3dc05cd4ba6e4424a146915ad3ebca900b419"`
[INFO] running `"docker" "rm" "-f" "d3b59522a974178b89d861fd6fb3dc05cd4ba6e4424a146915ad3ebca900b419"`
[INFO] [stdout] d3b59522a974178b89d861fd6fb3dc05cd4ba6e4424a146915ad3ebca900b419