[INFO] updating cached repository kgtkr/op_abstraction
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kgtkr/op_abstraction
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kgtkr/op_abstraction" "work/ex/beta-1.38-1/sources/1.37.0/gh/kgtkr/op_abstraction"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kgtkr/op_abstraction'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kgtkr/op_abstraction" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgtkr/op_abstraction"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgtkr/op_abstraction'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ce8b6763ea8f6a7ea3af47efb12a5cdc92ef059
[INFO] sha for GitHub repo kgtkr/op_abstraction: 9ce8b6763ea8f6a7ea3af47efb12a5cdc92ef059
[INFO] validating manifest of kgtkr/op_abstraction 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 kgtkr/op_abstraction 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 kgtkr/op_abstraction
[INFO] finished frobbing kgtkr/op_abstraction
[INFO] frobbed toml for kgtkr/op_abstraction written to work/ex/beta-1.38-1/sources/1.37.0/gh/kgtkr/op_abstraction/Cargo.toml
[INFO] started frobbing kgtkr/op_abstraction
[INFO] finished frobbing kgtkr/op_abstraction
[INFO] frobbed toml for kgtkr/op_abstraction written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgtkr/op_abstraction/Cargo.toml
[INFO] crate kgtkr/op_abstraction 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 kgtkr/op_abstraction 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-6/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/kgtkr/op_abstraction:/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] 363cac2bb6964d27ddf168f85cb64e2a6ef187f16e60a5cd31a64261a74b61f8
[INFO] running `"docker" "start" "-a" "363cac2bb6964d27ddf168f85cb64e2a6ef187f16e60a5cd31a64261a74b61f8"`
[INFO] [stderr]    Compiling op_abstraction v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `op`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn op(i: i32, a: i64, b: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "363cac2bb6964d27ddf168f85cb64e2a6ef187f16e60a5cd31a64261a74b61f8"`
[INFO] running `"docker" "rm" "-f" "363cac2bb6964d27ddf168f85cb64e2a6ef187f16e60a5cd31a64261a74b61f8"`
[INFO] [stdout] 363cac2bb6964d27ddf168f85cb64e2a6ef187f16e60a5cd31a64261a74b61f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/kgtkr/op_abstraction:/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] e6a1629bad1c55e8cf5ce07fdae6d1f1ada1ea7ff86724cfceb2741acb81f7a2
[INFO] running `"docker" "start" "-a" "e6a1629bad1c55e8cf5ce07fdae6d1f1ada1ea7ff86724cfceb2741acb81f7a2"`
[INFO] [stderr]    Compiling op_abstraction v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "e6a1629bad1c55e8cf5ce07fdae6d1f1ada1ea7ff86724cfceb2741acb81f7a2"`
[INFO] running `"docker" "rm" "-f" "e6a1629bad1c55e8cf5ce07fdae6d1f1ada1ea7ff86724cfceb2741acb81f7a2"`
[INFO] [stdout] e6a1629bad1c55e8cf5ce07fdae6d1f1ada1ea7ff86724cfceb2741acb81f7a2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/kgtkr/op_abstraction:/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] b105b1ec9049e807013694311683f2fb26e62fb16e21184c3cc05c9c63cf6fca
[INFO] running `"docker" "start" "-a" "b105b1ec9049e807013694311683f2fb26e62fb16e21184c3cc05c9c63cf6fca"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/op_abstraction-f8ba2d10e0a3149d
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::op_1 ... ok
[INFO] [stdout] test tests::op_2 ... ok
[INFO] [stdout] test tests::op_3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b105b1ec9049e807013694311683f2fb26e62fb16e21184c3cc05c9c63cf6fca"`
[INFO] running `"docker" "rm" "-f" "b105b1ec9049e807013694311683f2fb26e62fb16e21184c3cc05c9c63cf6fca"`
[INFO] [stdout] b105b1ec9049e807013694311683f2fb26e62fb16e21184c3cc05c9c63cf6fca