[INFO] updating cached repository https://github.com/andyrsmith/rust-fib
[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] e9eaba3a1b31d67d549d03fa1b25a81415037d0c
[INFO] testing andyrsmith/rust-fib against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyrsmith%2Frust-fib" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andyrsmith/rust-fib 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/andyrsmith/rust-fib
[INFO] finished tweaking git repo https://github.com/andyrsmith/rust-fib
[INFO] tweaked toml for git repo https://github.com/andyrsmith/rust-fib written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/andyrsmith/rust-fib 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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] deb76a4cbf6712ace3c08ba60ba45648bdd997f6d0a866fd2019ef99041aeffd
[INFO] running `"docker" "start" "-a" "deb76a4cbf6712ace3c08ba60ba45648bdd997f6d0a866fd2019ef99041aeffd"`
[INFO] [stderr]    Compiling fib v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::old_io;
[INFO] [stderr]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `old_io` in `std`
[INFO] [stderr]   --> src/main.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let mut reader = std::old_io::stdin();
[INFO] [stderr]    |                         ^^^^^^ could not find `old_io` in `std`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `fib`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "deb76a4cbf6712ace3c08ba60ba45648bdd997f6d0a866fd2019ef99041aeffd"`
[INFO] running `"docker" "rm" "-f" "deb76a4cbf6712ace3c08ba60ba45648bdd997f6d0a866fd2019ef99041aeffd"`
[INFO] [stdout] deb76a4cbf6712ace3c08ba60ba45648bdd997f6d0a866fd2019ef99041aeffd