[INFO] updating cached repository https://github.com/anontyro/rust-exercises-57
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1cd6c9ef39bdf5e69ebac3e35e7f825e78c0db8
[INFO] testing anontyro/rust-exercises-57 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanontyro%2Frust-exercises-57" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anontyro/rust-exercises-57 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/anontyro/rust-exercises-57
[INFO] finished tweaking git repo https://github.com/anontyro/rust-exercises-57
[INFO] tweaked toml for git repo https://github.com/anontyro/rust-exercises-57 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/anontyro/rust-exercises-57 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] eebcebbaa39ab90217cb08d86b629c075ba3887d390f2433b3e3e857eb305fb7
[INFO] running `"docker" "start" "-a" "eebcebbaa39ab90217cb08d86b629c075ba3887d390f2433b3e3e857eb305fb7"`
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling Prag_prog_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.44s
[INFO] running `"docker" "inspect" "eebcebbaa39ab90217cb08d86b629c075ba3887d390f2433b3e3e857eb305fb7"`
[INFO] running `"docker" "rm" "-f" "eebcebbaa39ab90217cb08d86b629c075ba3887d390f2433b3e3e857eb305fb7"`
[INFO] [stdout] eebcebbaa39ab90217cb08d86b629c075ba3887d390f2433b3e3e857eb305fb7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0ae1f7b7cfab26774383a90feacb202dfe9e41e6dba9277d33d98e96f866e147
[INFO] running `"docker" "start" "-a" "0ae1f7b7cfab26774383a90feacb202dfe9e41e6dba9277d33d98e96f866e147"`
[INFO] [stderr]    Compiling Prag_prog_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "0ae1f7b7cfab26774383a90feacb202dfe9e41e6dba9277d33d98e96f866e147"`
[INFO] running `"docker" "rm" "-f" "0ae1f7b7cfab26774383a90feacb202dfe9e41e6dba9277d33d98e96f866e147"`
[INFO] [stdout] 0ae1f7b7cfab26774383a90feacb202dfe9e41e6dba9277d33d98e96f866e147
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 35ac2be9ebbee98de00ea8d8aea55ef56775945259148cf8303edc20ec17dda5
[INFO] running `"docker" "start" "-a" "35ac2be9ebbee98de00ea8d8aea55ef56775945259148cf8303edc20ec17dda5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/main_lib-01c1803dd79db181
[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/rustwide/target/debug/deps/main-62b48f9d58a98f73
[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]    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" "35ac2be9ebbee98de00ea8d8aea55ef56775945259148cf8303edc20ec17dda5"`
[INFO] running `"docker" "rm" "-f" "35ac2be9ebbee98de00ea8d8aea55ef56775945259148cf8303edc20ec17dda5"`
[INFO] [stdout] 35ac2be9ebbee98de00ea8d8aea55ef56775945259148cf8303edc20ec17dda5