[INFO] updating cached repository https://github.com/andyrsmith/rust-fib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9eaba3a1b31d67d549d03fa1b25a81415037d0c
[INFO] testing andyrsmith/rust-fib against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyrsmith%2Frust-fib" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andyrsmith/rust-fib on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/andyrsmith/rust-fib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84218d0d4be3a728b47709f35a754b561454668d53a6e0543a404f6a262e67a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "84218d0d4be3a728b47709f35a754b561454668d53a6e0543a404f6a262e67a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84218d0d4be3a728b47709f35a754b561454668d53a6e0543a404f6a262e67a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84218d0d4be3a728b47709f35a754b561454668d53a6e0543a404f6a262e67a5", kill_on_drop: false }`
[INFO] [stdout] 84218d0d4be3a728b47709f35a754b561454668d53a6e0543a404f6a262e67a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc9d7664a7d3168be59972344bb2fa877145fab2c04bbcb13d644e8c4df987f7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bc9d7664a7d3168be59972344bb2fa877145fab2c04bbcb13d644e8c4df987f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fib v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::old_io`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::old_io;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `old_io` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `old_io` in `std`
[INFO] [stdout]   --> src/main.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 |   let mut reader = std::old_io::stdin();
[INFO] [stdout]    |                         ^^^^^^ could not find `old_io` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fib`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "bc9d7664a7d3168be59972344bb2fa877145fab2c04bbcb13d644e8c4df987f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc9d7664a7d3168be59972344bb2fa877145fab2c04bbcb13d644e8c4df987f7", kill_on_drop: false }`
[INFO] [stdout] bc9d7664a7d3168be59972344bb2fa877145fab2c04bbcb13d644e8c4df987f7