[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-1.38-1/sources/1.37.0/gh/upenn-cis198-2018f/lecture7"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/upenn-cis198-2018f/lecture7'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/upenn-cis198-2018f/lecture7" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/upenn-cis198-2018f/lecture7"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of upenn-cis198-2018f/lecture7 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 upenn-cis198-2018f/lecture7
[INFO] finished frobbing upenn-cis198-2018f/lecture7
[INFO] frobbed toml for upenn-cis198-2018f/lecture7 written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 upenn-cis198-2018f/lecture7 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1f7fcb9d2d1b1c87a09cbf8d0f6365a17863e94708112c6b304a8c5884acfb50
[INFO] running `"docker" "start" "-a" "1f7fcb9d2d1b1c87a09cbf8d0f6365a17863e94708112c6b304a8c5884acfb50"`
[INFO] [stderr]    Compiling lecture7 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "1f7fcb9d2d1b1c87a09cbf8d0f6365a17863e94708112c6b304a8c5884acfb50"`
[INFO] running `"docker" "rm" "-f" "1f7fcb9d2d1b1c87a09cbf8d0f6365a17863e94708112c6b304a8c5884acfb50"`
[INFO] [stdout] 1f7fcb9d2d1b1c87a09cbf8d0f6365a17863e94708112c6b304a8c5884acfb50
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6521213a2eab74980a1070b0e7533893e09eb87421d59f4d98fc56f6c403270f
[INFO] running `"docker" "start" "-a" "6521213a2eab74980a1070b0e7533893e09eb87421d59f4d98fc56f6c403270f"`
[INFO] [stderr]    Compiling lecture7 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "6521213a2eab74980a1070b0e7533893e09eb87421d59f4d98fc56f6c403270f"`
[INFO] running `"docker" "rm" "-f" "6521213a2eab74980a1070b0e7533893e09eb87421d59f4d98fc56f6c403270f"`
[INFO] [stdout] 6521213a2eab74980a1070b0e7533893e09eb87421d59f4d98fc56f6c403270f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] e7d638beb9ec8516b0476e59b7954128069de8cfe1ebf46d5e448c5816f9de7b
[INFO] running `"docker" "start" "-a" "e7d638beb9ec8516b0476e59b7954128069de8cfe1ebf46d5e448c5816f9de7b"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lecture7-afef9c048d08a334
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e7d638beb9ec8516b0476e59b7954128069de8cfe1ebf46d5e448c5816f9de7b"`
[INFO] running `"docker" "rm" "-f" "e7d638beb9ec8516b0476e59b7954128069de8cfe1ebf46d5e448c5816f9de7b"`
[INFO] [stdout] e7d638beb9ec8516b0476e59b7954128069de8cfe1ebf46d5e448c5816f9de7b