[INFO] updating cached repository massih/rust_book
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/massih/rust_book
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/massih/rust_book" "work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/massih/rust_book" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/massih/rust_book"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/massih/rust_book'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d158ebbce8c69207e137df888b413f4e8c385595
[INFO] sha for GitHub repo massih/rust_book: d158ebbce8c69207e137df888b413f4e8c385595
[INFO] validating manifest of massih/rust_book 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 massih/rust_book 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 massih/rust_book
[INFO] finished frobbing massih/rust_book
[INFO] frobbed toml for massih/rust_book written to work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book/Cargo.toml
[INFO] started frobbing massih/rust_book
[INFO] finished frobbing massih/rust_book
[INFO] frobbed toml for massih/rust_book written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/massih/rust_book/Cargo.toml
[INFO] crate massih/rust_book 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] [stderr]     Blocking waiting for file lock on package cache
[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 massih/rust_book 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book:/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] 986eee54a388ff2dc6ead31321d65e7974f6b955b1d7e9f7536f9a64dd8e6977
[INFO] running `"docker" "start" "-a" "986eee54a388ff2dc6ead31321d65e7974f6b955b1d7e9f7536f9a64dd8e6977"`
[INFO] [stderr]    Compiling rand v0.4.5
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling rust1 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `"docker" "inspect" "986eee54a388ff2dc6ead31321d65e7974f6b955b1d7e9f7536f9a64dd8e6977"`
[INFO] running `"docker" "rm" "-f" "986eee54a388ff2dc6ead31321d65e7974f6b955b1d7e9f7536f9a64dd8e6977"`
[INFO] [stdout] 986eee54a388ff2dc6ead31321d65e7974f6b955b1d7e9f7536f9a64dd8e6977
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book:/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] 631ea5b363dd87e10807b49e2b2e4dbb06f4c42d3b2d3c3ce095e4cd1cd58fa5
[INFO] running `"docker" "start" "-a" "631ea5b363dd87e10807b49e2b2e4dbb06f4c42d3b2d3c3ce095e4cd1cd58fa5"`
[INFO] [stderr]    Compiling rust1 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "631ea5b363dd87e10807b49e2b2e4dbb06f4c42d3b2d3c3ce095e4cd1cd58fa5"`
[INFO] running `"docker" "rm" "-f" "631ea5b363dd87e10807b49e2b2e4dbb06f4c42d3b2d3c3ce095e4cd1cd58fa5"`
[INFO] [stdout] 631ea5b363dd87e10807b49e2b2e4dbb06f4c42d3b2d3c3ce095e4cd1cd58fa5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/massih/rust_book:/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] 16a71d81c9b6e968c9fdc17da6fb3082a6f39511f59571a07a55b39061e8a1b2
[INFO] running `"docker" "start" "-a" "16a71d81c9b6e968c9fdc17da6fb3082a6f39511f59571a07a55b39061e8a1b2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust1-77e56dc28e4ed55f
[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" "16a71d81c9b6e968c9fdc17da6fb3082a6f39511f59571a07a55b39061e8a1b2"`
[INFO] running `"docker" "rm" "-f" "16a71d81c9b6e968c9fdc17da6fb3082a6f39511f59571a07a55b39061e8a1b2"`
[INFO] [stdout] 16a71d81c9b6e968c9fdc17da6fb3082a6f39511f59571a07a55b39061e8a1b2