[INFO] updating cached repository corodiak/Rust_Excercises
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/corodiak/Rust_Excercises
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/corodiak/Rust_Excercises" "work/ex/beta-1.38-1/sources/1.37.0/gh/corodiak/Rust_Excercises"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/corodiak/Rust_Excercises'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/corodiak/Rust_Excercises" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corodiak/Rust_Excercises"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corodiak/Rust_Excercises'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 058f4d2499ffbd7d39660fd272bd7f33f07012e1
[INFO] sha for GitHub repo corodiak/Rust_Excercises: 058f4d2499ffbd7d39660fd272bd7f33f07012e1
[INFO] validating manifest of corodiak/Rust_Excercises 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 corodiak/Rust_Excercises 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 corodiak/Rust_Excercises
[INFO] finished frobbing corodiak/Rust_Excercises
[INFO] frobbed toml for corodiak/Rust_Excercises written to work/ex/beta-1.38-1/sources/1.37.0/gh/corodiak/Rust_Excercises/Cargo.toml
[INFO] started frobbing corodiak/Rust_Excercises
[INFO] finished frobbing corodiak/Rust_Excercises
[INFO] frobbed toml for corodiak/Rust_Excercises written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corodiak/Rust_Excercises/Cargo.toml
[INFO] crate corodiak/Rust_Excercises 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 corodiak/Rust_Excercises 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-5/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/corodiak/Rust_Excercises:/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] a9218b15b12a2a8f6846f09527a969546029d31412466a91eb6bdad277996f64
[INFO] running `"docker" "start" "-a" "a9218b15b12a2a8f6846f09527a969546029d31412466a91eb6bdad277996f64"`
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling excercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `"docker" "inspect" "a9218b15b12a2a8f6846f09527a969546029d31412466a91eb6bdad277996f64"`
[INFO] running `"docker" "rm" "-f" "a9218b15b12a2a8f6846f09527a969546029d31412466a91eb6bdad277996f64"`
[INFO] [stdout] a9218b15b12a2a8f6846f09527a969546029d31412466a91eb6bdad277996f64
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/corodiak/Rust_Excercises:/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] 08fe9e633dc51c4aa838f3ee9d9aedba83c67166b82f07da6f57e14d9201a0e9
[INFO] running `"docker" "start" "-a" "08fe9e633dc51c4aa838f3ee9d9aedba83c67166b82f07da6f57e14d9201a0e9"`
[INFO] [stderr]    Compiling excercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "08fe9e633dc51c4aa838f3ee9d9aedba83c67166b82f07da6f57e14d9201a0e9"`
[INFO] running `"docker" "rm" "-f" "08fe9e633dc51c4aa838f3ee9d9aedba83c67166b82f07da6f57e14d9201a0e9"`
[INFO] [stdout] 08fe9e633dc51c4aa838f3ee9d9aedba83c67166b82f07da6f57e14d9201a0e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/corodiak/Rust_Excercises:/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] 81db17b5405bcfa733cd54eb838b23ba25b7cfb07f7b8af1bc56bcbb29b44fff
[INFO] running `"docker" "start" "-a" "81db17b5405bcfa733cd54eb838b23ba25b7cfb07f7b8af1bc56bcbb29b44fff"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/excercises-79eebf080af4154c
[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" "81db17b5405bcfa733cd54eb838b23ba25b7cfb07f7b8af1bc56bcbb29b44fff"`
[INFO] running `"docker" "rm" "-f" "81db17b5405bcfa733cd54eb838b23ba25b7cfb07f7b8af1bc56bcbb29b44fff"`
[INFO] [stdout] 81db17b5405bcfa733cd54eb838b23ba25b7cfb07f7b8af1bc56bcbb29b44fff