[INFO] updating cached repository upenn-cis198-2018f/lecture7
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/upenn-cis198-2018f/lecture7
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/upenn-cis198-2018f/lecture7" "work/ex/beta-1.37-6/sources/1.36.0/gh/upenn-cis198-2018f/lecture7"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/upenn-cis198-2018f/lecture7'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/upenn-cis198-2018f/lecture7" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/upenn-cis198-2018f/lecture7"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/upenn-cis198-2018f/lecture7'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c312d0cf54716bd7cf03ac3321a3697d66830819
[INFO] sha for GitHub repo upenn-cis198-2018f/lecture7: c312d0cf54716bd7cf03ac3321a3697d66830819
[INFO] validating manifest of upenn-cis198-2018f/lecture7 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 upenn-cis198-2018f/lecture7 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 upenn-cis198-2018f/lecture7
[INFO] finished frobbing upenn-cis198-2018f/lecture7
[INFO] frobbed toml for upenn-cis198-2018f/lecture7 written to work/ex/beta-1.37-6/sources/1.36.0/gh/upenn-cis198-2018f/lecture7/Cargo.toml
[INFO] started frobbing upenn-cis198-2018f/lecture7
[INFO] finished frobbing upenn-cis198-2018f/lecture7
[INFO] frobbed toml for upenn-cis198-2018f/lecture7 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/upenn-cis198-2018f/lecture7/Cargo.toml
[INFO] crate upenn-cis198-2018f/lecture7 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 upenn-cis198-2018f/lecture7 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-6/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/upenn-cis198-2018f/lecture7:/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] 40311758f1b4c6fed5ce2b72169c78655ac2457abfbc53aa641bcb51ea508411
[INFO] running `"docker" "start" "-a" "40311758f1b4c6fed5ce2b72169c78655ac2457abfbc53aa641bcb51ea508411"`
[INFO] [stderr]    Compiling lecture7 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "40311758f1b4c6fed5ce2b72169c78655ac2457abfbc53aa641bcb51ea508411"`
[INFO] running `"docker" "rm" "-f" "40311758f1b4c6fed5ce2b72169c78655ac2457abfbc53aa641bcb51ea508411"`
[INFO] [stdout] 40311758f1b4c6fed5ce2b72169c78655ac2457abfbc53aa641bcb51ea508411
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/upenn-cis198-2018f/lecture7:/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] 1be48a2423e50c142d4544cae645f3bde4aff900b7c34f75acbcbf6db9130a4f
[INFO] running `"docker" "start" "-a" "1be48a2423e50c142d4544cae645f3bde4aff900b7c34f75acbcbf6db9130a4f"`
[INFO] [stderr]    Compiling lecture7 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "1be48a2423e50c142d4544cae645f3bde4aff900b7c34f75acbcbf6db9130a4f"`
[INFO] running `"docker" "rm" "-f" "1be48a2423e50c142d4544cae645f3bde4aff900b7c34f75acbcbf6db9130a4f"`
[INFO] [stdout] 1be48a2423e50c142d4544cae645f3bde4aff900b7c34f75acbcbf6db9130a4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/upenn-cis198-2018f/lecture7:/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] a30c87328ca669204cc2fd4c9181a40e5c6be39930fe6b22adae6e9643a4445d
[INFO] running `"docker" "start" "-a" "a30c87328ca669204cc2fd4c9181a40e5c6be39930fe6b22adae6e9643a4445d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lecture7-2f1418d01a26b91b
[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" "a30c87328ca669204cc2fd4c9181a40e5c6be39930fe6b22adae6e9643a4445d"`
[INFO] running `"docker" "rm" "-f" "a30c87328ca669204cc2fd4c9181a40e5c6be39930fe6b22adae6e9643a4445d"`
[INFO] [stdout] a30c87328ca669204cc2fd4c9181a40e5c6be39930fe6b22adae6e9643a4445d