[INFO] cloning repository https://github.com/andyrsmith/rust-fib
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andyrsmith/rust-fib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyrsmith%2Frust-fib"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyrsmith%2Frust-fib'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e9eaba3a1b31d67d549d03fa1b25a81415037d0c
[INFO] testing andyrsmith/rust-fib against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyrsmith%2Frust-fib" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andyrsmith/rust-fib on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "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 /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/andyrsmith/rust-fib already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 17d4a5c87b1fb31b873a288977e662a3c61bfbb4cb7a03ac9fe502ca8cc9f479
[INFO] running `"docker" "start" "-a" "17d4a5c87b1fb31b873a288977e662a3c61bfbb4cb7a03ac9fe502ca8cc9f479"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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" "17d4a5c87b1fb31b873a288977e662a3c61bfbb4cb7a03ac9fe502ca8cc9f479"`
[INFO] running `"docker" "rm" "-f" "17d4a5c87b1fb31b873a288977e662a3c61bfbb4cb7a03ac9fe502ca8cc9f479"`
[INFO] [stdout] 17d4a5c87b1fb31b873a288977e662a3c61bfbb4cb7a03ac9fe502ca8cc9f479