[INFO] updating cached repository nathanm2/iron-gcd
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nathanm2/iron-gcd
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanm2/iron-gcd" "work/ex/beta-1.37-6/sources/1.36.0/gh/nathanm2/iron-gcd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/nathanm2/iron-gcd'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanm2/iron-gcd" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nathanm2/iron-gcd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nathanm2/iron-gcd'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 18b359b8550a720ec93119209eb58a4254086ecc
[INFO] sha for GitHub repo nathanm2/iron-gcd: 18b359b8550a720ec93119209eb58a4254086ecc
[INFO] validating manifest of nathanm2/iron-gcd 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 nathanm2/iron-gcd 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 nathanm2/iron-gcd
[INFO] finished frobbing nathanm2/iron-gcd
[INFO] frobbed toml for nathanm2/iron-gcd written to work/ex/beta-1.37-6/sources/1.36.0/gh/nathanm2/iron-gcd/Cargo.toml
[INFO] started frobbing nathanm2/iron-gcd
[INFO] finished frobbing nathanm2/iron-gcd
[INFO] frobbed toml for nathanm2/iron-gcd written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nathanm2/iron-gcd/Cargo.toml
[INFO] crate nathanm2/iron-gcd 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] [stderr]     Blocking waiting for file lock on package cache lock
[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 nathanm2/iron-gcd 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-4/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/nathanm2/iron-gcd:/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] 02baaa6d8e637fdf50162ebe61c070c8245b8b5cefe51abfa11318d5083b045f
[INFO] running `"docker" "start" "-a" "02baaa6d8e637fdf50162ebe61c070c8245b8b5cefe51abfa11318d5083b045f"`
[INFO] [stderr]    Compiling iron-gcd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `gcd`
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn gcd(mut a: u64, mut b: u64) -> u64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "02baaa6d8e637fdf50162ebe61c070c8245b8b5cefe51abfa11318d5083b045f"`
[INFO] running `"docker" "rm" "-f" "02baaa6d8e637fdf50162ebe61c070c8245b8b5cefe51abfa11318d5083b045f"`
[INFO] [stdout] 02baaa6d8e637fdf50162ebe61c070c8245b8b5cefe51abfa11318d5083b045f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/nathanm2/iron-gcd:/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] c00d3732d01e41a4d39dfd3092b7150aacf18db1b95c15ecc2d63dc3c45b98cb
[INFO] running `"docker" "start" "-a" "c00d3732d01e41a4d39dfd3092b7150aacf18db1b95c15ecc2d63dc3c45b98cb"`
[INFO] [stderr]    Compiling iron-gcd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "c00d3732d01e41a4d39dfd3092b7150aacf18db1b95c15ecc2d63dc3c45b98cb"`
[INFO] running `"docker" "rm" "-f" "c00d3732d01e41a4d39dfd3092b7150aacf18db1b95c15ecc2d63dc3c45b98cb"`
[INFO] [stdout] c00d3732d01e41a4d39dfd3092b7150aacf18db1b95c15ecc2d63dc3c45b98cb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/nathanm2/iron-gcd:/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] 7d1ec59f5dfbc660bd9b2b58153eafdc84e1cc3db586fd41616792aabf7c417b
[INFO] running `"docker" "start" "-a" "7d1ec59f5dfbc660bd9b2b58153eafdc84e1cc3db586fd41616792aabf7c417b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/iron_gcd-e368d3e12febe00c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_gcd ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7d1ec59f5dfbc660bd9b2b58153eafdc84e1cc3db586fd41616792aabf7c417b"`
[INFO] running `"docker" "rm" "-f" "7d1ec59f5dfbc660bd9b2b58153eafdc84e1cc3db586fd41616792aabf7c417b"`
[INFO] [stdout] 7d1ec59f5dfbc660bd9b2b58153eafdc84e1cc3db586fd41616792aabf7c417b