[INFO] updating cached repository robertohuertasm/rust-a-gentle-introduction
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/robertohuertasm/rust-a-gentle-introduction
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/robertohuertasm/rust-a-gentle-introduction" "work/ex/beta-1.38-1/sources/1.37.0/gh/robertohuertasm/rust-a-gentle-introduction"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/robertohuertasm/rust-a-gentle-introduction'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/robertohuertasm/rust-a-gentle-introduction" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robertohuertasm/rust-a-gentle-introduction"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robertohuertasm/rust-a-gentle-introduction'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e36dbf2139c284f68e110fefd1edc88dec8e3ab
[INFO] sha for GitHub repo robertohuertasm/rust-a-gentle-introduction: 7e36dbf2139c284f68e110fefd1edc88dec8e3ab
[INFO] validating manifest of robertohuertasm/rust-a-gentle-introduction 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 robertohuertasm/rust-a-gentle-introduction 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 robertohuertasm/rust-a-gentle-introduction
[INFO] finished frobbing robertohuertasm/rust-a-gentle-introduction
[INFO] frobbed toml for robertohuertasm/rust-a-gentle-introduction written to work/ex/beta-1.38-1/sources/1.37.0/gh/robertohuertasm/rust-a-gentle-introduction/Cargo.toml
[INFO] started frobbing robertohuertasm/rust-a-gentle-introduction
[INFO] finished frobbing robertohuertasm/rust-a-gentle-introduction
[INFO] frobbed toml for robertohuertasm/rust-a-gentle-introduction written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robertohuertasm/rust-a-gentle-introduction/Cargo.toml
[INFO] crate robertohuertasm/rust-a-gentle-introduction 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 robertohuertasm/rust-a-gentle-introduction 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-1/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/robertohuertasm/rust-a-gentle-introduction:/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] 64c1f666c0523472ac92231877b7d256783cf8a5c627425628b3a870f4e5f572
[INFO] running `"docker" "start" "-a" "64c1f666c0523472ac92231877b7d256783cf8a5c627425628b3a870f4e5f572"`
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling gentle_intro v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.25s
[INFO] running `"docker" "inspect" "64c1f666c0523472ac92231877b7d256783cf8a5c627425628b3a870f4e5f572"`
[INFO] running `"docker" "rm" "-f" "64c1f666c0523472ac92231877b7d256783cf8a5c627425628b3a870f4e5f572"`
[INFO] [stdout] 64c1f666c0523472ac92231877b7d256783cf8a5c627425628b3a870f4e5f572
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/robertohuertasm/rust-a-gentle-introduction:/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] 1503a7b04aeb0a0750be5ef0f7f88f88280018fbb9b41653063d76e0cadd3a83
[INFO] running `"docker" "start" "-a" "1503a7b04aeb0a0750be5ef0f7f88f88280018fbb9b41653063d76e0cadd3a83"`
[INFO] [stderr]    Compiling gentle_intro v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "1503a7b04aeb0a0750be5ef0f7f88f88280018fbb9b41653063d76e0cadd3a83"`
[INFO] running `"docker" "rm" "-f" "1503a7b04aeb0a0750be5ef0f7f88f88280018fbb9b41653063d76e0cadd3a83"`
[INFO] [stdout] 1503a7b04aeb0a0750be5ef0f7f88f88280018fbb9b41653063d76e0cadd3a83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/robertohuertasm/rust-a-gentle-introduction:/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] bd408d61ff62ac4825bce195c00d083d6ced0fcd07fa157964fead604751ee77
[INFO] running `"docker" "start" "-a" "bd408d61ff62ac4825bce195c00d083d6ced0fcd07fa157964fead604751ee77"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gentle_intro-cc737fb117a862aa
[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" "bd408d61ff62ac4825bce195c00d083d6ced0fcd07fa157964fead604751ee77"`
[INFO] running `"docker" "rm" "-f" "bd408d61ff62ac4825bce195c00d083d6ced0fcd07fa157964fead604751ee77"`
[INFO] [stdout] bd408d61ff62ac4825bce195c00d083d6ced0fcd07fa157964fead604751ee77