[INFO] updating cached repository seungha-kim/rust-practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/seungha-kim/rust-practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/seungha-kim/rust-practice" "work/ex/beta-1.38-1/sources/1.37.0/gh/seungha-kim/rust-practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/seungha-kim/rust-practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seungha-kim/rust-practice" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seungha-kim/rust-practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seungha-kim/rust-practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0d68a9bf554865f68025307033b6466798698d7d
[INFO] sha for GitHub repo seungha-kim/rust-practice: 0d68a9bf554865f68025307033b6466798698d7d
[INFO] validating manifest of seungha-kim/rust-practice 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 seungha-kim/rust-practice 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 seungha-kim/rust-practice
[INFO] finished frobbing seungha-kim/rust-practice
[INFO] frobbed toml for seungha-kim/rust-practice written to work/ex/beta-1.38-1/sources/1.37.0/gh/seungha-kim/rust-practice/Cargo.toml
[INFO] started frobbing seungha-kim/rust-practice
[INFO] finished frobbing seungha-kim/rust-practice
[INFO] frobbed toml for seungha-kim/rust-practice written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seungha-kim/rust-practice/Cargo.toml
[INFO] crate seungha-kim/rust-practice 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing seungha-kim/rust-practice 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-5/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/seungha-kim/rust-practice:/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] 4c91400329fba94371148e7a0aba0b3b7378b7ca4f1d09fb97881e295b264ca3
[INFO] running `"docker" "start" "-a" "4c91400329fba94371148e7a0aba0b3b7378b7ca4f1d09fb97881e295b264ca3"`
[INFO] [stderr]    Compiling snakehead v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "4c91400329fba94371148e7a0aba0b3b7378b7ca4f1d09fb97881e295b264ca3"`
[INFO] running `"docker" "rm" "-f" "4c91400329fba94371148e7a0aba0b3b7378b7ca4f1d09fb97881e295b264ca3"`
[INFO] [stdout] 4c91400329fba94371148e7a0aba0b3b7378b7ca4f1d09fb97881e295b264ca3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/seungha-kim/rust-practice:/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] 19a4d1d947520f6dff9b9f7b57aebfd5ffbd25f69dec80216be0f77e4c6a856b
[INFO] running `"docker" "start" "-a" "19a4d1d947520f6dff9b9f7b57aebfd5ffbd25f69dec80216be0f77e4c6a856b"`
[INFO] [stderr]    Compiling snakehead v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `"docker" "inspect" "19a4d1d947520f6dff9b9f7b57aebfd5ffbd25f69dec80216be0f77e4c6a856b"`
[INFO] running `"docker" "rm" "-f" "19a4d1d947520f6dff9b9f7b57aebfd5ffbd25f69dec80216be0f77e4c6a856b"`
[INFO] [stdout] 19a4d1d947520f6dff9b9f7b57aebfd5ffbd25f69dec80216be0f77e4c6a856b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/seungha-kim/rust-practice:/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] 75163d75652ad60a9a1c25d3358c9bb91ef207d15777a9a47232d8602a9192fe
[INFO] running `"docker" "start" "-a" "75163d75652ad60a9a1c25d3358c9bb91ef207d15777a9a47232d8602a9192fe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snakehead-3e5103020acd0c2a
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test closure::mutandonce::tests::capture_test ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_drop_works1 ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_copy_works ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_drop_works2 ... ok
[INFO] [stdout] test closure::mutandonce::tests::works2 ... ok
[INFO] [stdout] test closure::mutandonce::tests::works ... ok
[INFO] [stdout] test collections::string::tests::string_plus ... ok
[INFO] [stdout] test collections::vec::tests::add_works ... ok
[INFO] [stdout] test collections::vec::tests::vec_get ... ok
[INFO] [stdout] test collections::vec::tests::vec_mut_el ... ok
[INFO] [stdout] test copy::copy::tests::copy_works ... ok
[INFO] [stdout] test collections::vec::tests::vec_ownership ... ok
[INFO] [stdout] test copy::copy::tests::drop_works ... ok
[INFO] [stdout] test copy::copy::tests::reference_is_copiable ... ok
[INFO] [stdout] test copy::copy::tests::reference_is_copiable2 ... ok
[INFO] [stdout] test lifetime::longest::tests::longest_workd ... ok
[INFO] [stdout] test smart::list::tests::list_works ... ok
[INFO] [stdout] test smart::tests::deref_coercion ... ok
[INFO] [stdout] test smart::tests::test ... ok
[INFO] [stdout] test traits::largest::tests::largest_ref_works ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo ... ok
[INFO] [stdout] test traits::largest::tests::largest_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snakehead-c73459c4833c07a8
[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] [stderr]    Doc-tests snakehead
[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" "75163d75652ad60a9a1c25d3358c9bb91ef207d15777a9a47232d8602a9192fe"`
[INFO] running `"docker" "rm" "-f" "75163d75652ad60a9a1c25d3358c9bb91ef207d15777a9a47232d8602a9192fe"`
[INFO] [stdout] 75163d75652ad60a9a1c25d3358c9bb91ef207d15777a9a47232d8602a9192fe