[INFO] updating cached repository iAmao/30-days-of-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iAmao/30-days-of-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iAmao/30-days-of-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/iAmao/30-days-of-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/iAmao/30-days-of-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iAmao/30-days-of-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iAmao/30-days-of-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iAmao/30-days-of-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1b329a19bcb0159274f39c3b757461c921235e8c
[INFO] sha for GitHub repo iAmao/30-days-of-rust: 1b329a19bcb0159274f39c3b757461c921235e8c
[INFO] validating manifest of iAmao/30-days-of-rust 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 iAmao/30-days-of-rust 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 iAmao/30-days-of-rust
[INFO] finished frobbing iAmao/30-days-of-rust
[INFO] frobbed toml for iAmao/30-days-of-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/iAmao/30-days-of-rust/Cargo.toml
[INFO] started frobbing iAmao/30-days-of-rust
[INFO] finished frobbing iAmao/30-days-of-rust
[INFO] frobbed toml for iAmao/30-days-of-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iAmao/30-days-of-rust/Cargo.toml
[INFO] crate iAmao/30-days-of-rust 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing iAmao/30-days-of-rust 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-1/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/iAmao/30-days-of-rust:/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] eaba4fc1856a7fa5121c930e21fb481081e4ac116bfd427c1690ed7520e33889
[INFO] running `"docker" "start" "-a" "eaba4fc1856a7fa5121c930e21fb481081e4ac116bfd427c1690ed7520e33889"`
[INFO] [stderr]    Compiling thirty_days_of_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "eaba4fc1856a7fa5121c930e21fb481081e4ac116bfd427c1690ed7520e33889"`
[INFO] running `"docker" "rm" "-f" "eaba4fc1856a7fa5121c930e21fb481081e4ac116bfd427c1690ed7520e33889"`
[INFO] [stdout] eaba4fc1856a7fa5121c930e21fb481081e4ac116bfd427c1690ed7520e33889
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/iAmao/30-days-of-rust:/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] 3549983f7c6bb8364c0551a9573f13518399d52dbb5301777f0df9509358f61b
[INFO] running `"docker" "start" "-a" "3549983f7c6bb8364c0551a9573f13518399d52dbb5301777f0df9509358f61b"`
[INFO] [stderr]    Compiling thirty_days_of_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "3549983f7c6bb8364c0551a9573f13518399d52dbb5301777f0df9509358f61b"`
[INFO] running `"docker" "rm" "-f" "3549983f7c6bb8364c0551a9573f13518399d52dbb5301777f0df9509358f61b"`
[INFO] [stdout] 3549983f7c6bb8364c0551a9573f13518399d52dbb5301777f0df9509358f61b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/iAmao/30-days-of-rust:/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] 2863edb86dba2de7b2f0e5ddd88707af2f8f92e0cc42ef1b7bd66c36156f641d
[INFO] running `"docker" "start" "-a" "2863edb86dba2de7b2f0e5ddd88707af2f8f92e0cc42ef1b7bd66c36156f641d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/thirtylibs-e91aae9de737d8a8
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/thirty_days_of_rust-02615f0ec0b6287a
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests thirtylibs
[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] [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" "2863edb86dba2de7b2f0e5ddd88707af2f8f92e0cc42ef1b7bd66c36156f641d"`
[INFO] running `"docker" "rm" "-f" "2863edb86dba2de7b2f0e5ddd88707af2f8f92e0cc42ef1b7bd66c36156f641d"`
[INFO] [stdout] 2863edb86dba2de7b2f0e5ddd88707af2f8f92e0cc42ef1b7bd66c36156f641d