[INFO] updating cached repository kalehv/rust_by_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kalehv/rust_by_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kalehv/rust_by_example" "work/ex/beta-1.38-1/sources/1.37.0/gh/kalehv/rust_by_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kalehv/rust_by_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kalehv/rust_by_example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kalehv/rust_by_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kalehv/rust_by_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e29748ab6d772a9281b296562034c8e5dd3be68
[INFO] sha for GitHub repo kalehv/rust_by_example: 3e29748ab6d772a9281b296562034c8e5dd3be68
[INFO] validating manifest of kalehv/rust_by_example 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 kalehv/rust_by_example 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 kalehv/rust_by_example
[INFO] finished frobbing kalehv/rust_by_example
[INFO] frobbed toml for kalehv/rust_by_example written to work/ex/beta-1.38-1/sources/1.37.0/gh/kalehv/rust_by_example/Cargo.toml
[INFO] started frobbing kalehv/rust_by_example
[INFO] finished frobbing kalehv/rust_by_example
[INFO] frobbed toml for kalehv/rust_by_example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kalehv/rust_by_example/Cargo.toml
[INFO] crate kalehv/rust_by_example 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 kalehv/rust_by_example 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/kalehv/rust_by_example:/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] a2b532667dc98a558c26346934460b69eff1eb7a92027ab84174b478f56ff4b3
[INFO] running `"docker" "start" "-a" "a2b532667dc98a558c26346934460b69eff1eb7a92027ab84174b478f56ff4b3"`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "a2b532667dc98a558c26346934460b69eff1eb7a92027ab84174b478f56ff4b3"`
[INFO] running `"docker" "rm" "-f" "a2b532667dc98a558c26346934460b69eff1eb7a92027ab84174b478f56ff4b3"`
[INFO] [stdout] a2b532667dc98a558c26346934460b69eff1eb7a92027ab84174b478f56ff4b3
[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/kalehv/rust_by_example:/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] f77f08a373abbe1efae89d95e80e6c58d1c2cb7532e9c902e58d43381b769b2e
[INFO] running `"docker" "start" "-a" "f77f08a373abbe1efae89d95e80e6c58d1c2cb7532e9c902e58d43381b769b2e"`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "f77f08a373abbe1efae89d95e80e6c58d1c2cb7532e9c902e58d43381b769b2e"`
[INFO] running `"docker" "rm" "-f" "f77f08a373abbe1efae89d95e80e6c58d1c2cb7532e9c902e58d43381b769b2e"`
[INFO] [stdout] f77f08a373abbe1efae89d95e80e6c58d1c2cb7532e9c902e58d43381b769b2e
[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/kalehv/rust_by_example:/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] 77e2a842176f924c3821c2829ddbe2f8fd52c54bf59bb4ce9e31fad128bebb2a
[INFO] running `"docker" "start" "-a" "77e2a842176f924c3821c2829ddbe2f8fd52c54bf59bb4ce9e31fad128bebb2a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_by_example-b0ff0b78d2f35826
[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" "77e2a842176f924c3821c2829ddbe2f8fd52c54bf59bb4ce9e31fad128bebb2a"`
[INFO] running `"docker" "rm" "-f" "77e2a842176f924c3821c2829ddbe2f8fd52c54bf59bb4ce9e31fad128bebb2a"`
[INFO] [stdout] 77e2a842176f924c3821c2829ddbe2f8fd52c54bf59bb4ce9e31fad128bebb2a