[INFO] updating cached repository nicmr/jargo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nicmr/jargo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nicmr/jargo" "work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nicmr/jargo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nicmr/jargo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nicmr/jargo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 440d2db8653d28f2f33aef691ab012601f7d513e
[INFO] sha for GitHub repo nicmr/jargo: 440d2db8653d28f2f33aef691ab012601f7d513e
[INFO] validating manifest of nicmr/jargo 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 nicmr/jargo 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 nicmr/jargo
[INFO] finished frobbing nicmr/jargo
[INFO] frobbed toml for nicmr/jargo written to work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo/Cargo.toml
[INFO] started frobbing nicmr/jargo
[INFO] finished frobbing nicmr/jargo
[INFO] frobbed toml for nicmr/jargo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nicmr/jargo/Cargo.toml
[INFO] crate nicmr/jargo 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 nicmr/jargo against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 170b39088acdf0eb1761deb711a95d4fd5382f7a4aa00ef68ab7e0c084b431f8
[INFO] running `"docker" "start" "-a" "170b39088acdf0eb1761deb711a95d4fd5382f7a4aa00ef68ab7e0c084b431f8"`
[INFO] [stderr]    Compiling toml v0.4.8
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]    Compiling jargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/commands.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         project.run();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.42s
[INFO] running `"docker" "inspect" "170b39088acdf0eb1761deb711a95d4fd5382f7a4aa00ef68ab7e0c084b431f8"`
[INFO] running `"docker" "rm" "-f" "170b39088acdf0eb1761deb711a95d4fd5382f7a4aa00ef68ab7e0c084b431f8"`
[INFO] [stdout] 170b39088acdf0eb1761deb711a95d4fd5382f7a4aa00ef68ab7e0c084b431f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 388f62c2ce14247dc7e2561ec543c94036a0856ec23dcf756efce95bee388570
[INFO] running `"docker" "start" "-a" "388f62c2ce14247dc7e2561ec543c94036a0856ec23dcf756efce95bee388570"`
[INFO] [stderr]    Compiling jargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/commands.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         project.run();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "388f62c2ce14247dc7e2561ec543c94036a0856ec23dcf756efce95bee388570"`
[INFO] running `"docker" "rm" "-f" "388f62c2ce14247dc7e2561ec543c94036a0856ec23dcf756efce95bee388570"`
[INFO] [stdout] 388f62c2ce14247dc7e2561ec543c94036a0856ec23dcf756efce95bee388570
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nicmr/jargo:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] b9e13ad735b4ce0a275bc2504abf9ac58d487a93c6272e54d482b18e398a8e62
[INFO] running `"docker" "start" "-a" "b9e13ad735b4ce0a275bc2504abf9ac58d487a93c6272e54d482b18e398a8e62"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/jargo-6828f16cd8012797
[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" "b9e13ad735b4ce0a275bc2504abf9ac58d487a93c6272e54d482b18e398a8e62"`
[INFO] running `"docker" "rm" "-f" "b9e13ad735b4ce0a275bc2504abf9ac58d487a93c6272e54d482b18e398a8e62"`
[INFO] [stdout] b9e13ad735b4ce0a275bc2504abf9ac58d487a93c6272e54d482b18e398a8e62