[INFO] updating cached repository anontyro/rust-exercises-57
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/anontyro/rust-exercises-57
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/anontyro/rust-exercises-57" "work/ex/beta-1.38-1/sources/1.37.0/gh/anontyro/rust-exercises-57"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/anontyro/rust-exercises-57'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/anontyro/rust-exercises-57" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anontyro/rust-exercises-57"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anontyro/rust-exercises-57'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da9f61b08b77fb6e282b08d0549fe7af0409fe9a
[INFO] sha for GitHub repo anontyro/rust-exercises-57: da9f61b08b77fb6e282b08d0549fe7af0409fe9a
[INFO] validating manifest of anontyro/rust-exercises-57 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 anontyro/rust-exercises-57 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 anontyro/rust-exercises-57
[INFO] finished frobbing anontyro/rust-exercises-57
[INFO] frobbed toml for anontyro/rust-exercises-57 written to work/ex/beta-1.38-1/sources/1.37.0/gh/anontyro/rust-exercises-57/Cargo.toml
[INFO] started frobbing anontyro/rust-exercises-57
[INFO] finished frobbing anontyro/rust-exercises-57
[INFO] frobbed toml for anontyro/rust-exercises-57 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anontyro/rust-exercises-57/Cargo.toml
[INFO] crate anontyro/rust-exercises-57 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 anontyro/rust-exercises-57 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/anontyro/rust-exercises-57:/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] 7a556104347f67d90369767757a8fc828371ec5fbffdce85781a3e35ea834d26
[INFO] running `"docker" "start" "-a" "7a556104347f67d90369767757a8fc828371ec5fbffdce85781a3e35ea834d26"`
[INFO] [stderr]    Compiling Prag_prog_exercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `"docker" "inspect" "7a556104347f67d90369767757a8fc828371ec5fbffdce85781a3e35ea834d26"`
[INFO] running `"docker" "rm" "-f" "7a556104347f67d90369767757a8fc828371ec5fbffdce85781a3e35ea834d26"`
[INFO] [stdout] 7a556104347f67d90369767757a8fc828371ec5fbffdce85781a3e35ea834d26
[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/anontyro/rust-exercises-57:/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] bd4c658f0c962e9558f1a9bf15d0e84b38dddf0364fe0e5878507d3e7665b043
[INFO] running `"docker" "start" "-a" "bd4c658f0c962e9558f1a9bf15d0e84b38dddf0364fe0e5878507d3e7665b043"`
[INFO] [stderr]    Compiling Prag_prog_exercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "bd4c658f0c962e9558f1a9bf15d0e84b38dddf0364fe0e5878507d3e7665b043"`
[INFO] running `"docker" "rm" "-f" "bd4c658f0c962e9558f1a9bf15d0e84b38dddf0364fe0e5878507d3e7665b043"`
[INFO] [stdout] bd4c658f0c962e9558f1a9bf15d0e84b38dddf0364fe0e5878507d3e7665b043
[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/anontyro/rust-exercises-57:/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] 998c96f3f4531c701f8884dc726cab34c5162c6537f281ca605894af9d636203
[INFO] running `"docker" "start" "-a" "998c96f3f4531c701f8884dc726cab34c5162c6537f281ca605894af9d636203"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main_lib-52f3d41c22c96208
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/main-75b2545f98fb7c65
[INFO] [stderr]    Doc-tests main_lib
[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" "998c96f3f4531c701f8884dc726cab34c5162c6537f281ca605894af9d636203"`
[INFO] running `"docker" "rm" "-f" "998c96f3f4531c701f8884dc726cab34c5162c6537f281ca605894af9d636203"`
[INFO] [stdout] 998c96f3f4531c701f8884dc726cab34c5162c6537f281ca605894af9d636203