[INFO] updating cached repository https://github.com/hgzimmerman/ray_cast_tui
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b8a2a776704d9d6e79b708fc4dbc66b1d34bb7ff
[INFO] testing hgzimmerman/ray_cast_tui against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgzimmerman%2Fray_cast_tui" "/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/hgzimmerman/ray_cast_tui 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/hgzimmerman/ray_cast_tui
[INFO] finished tweaking git repo https://github.com/hgzimmerman/ray_cast_tui
[INFO] tweaked toml for git repo https://github.com/hgzimmerman/ray_cast_tui written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/hgzimmerman/ray_cast_tui 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] 62ee9d22e51988367f2cef4826bd5acf4b4b19f76f6e5b0b8aeabd693e9bea0d
[INFO] running `"docker" "start" "-a" "62ee9d22e51988367f2cef4826bd5acf4b4b19f76f6e5b0b8aeabd693e9bea0d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling ray_cast_tui v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_float)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_float_secs` found for struct `std::time::Duration` in the current scope
[INFO] [stderr]   --> src/main.rs:73:44
[INFO] [stderr]    |
[INFO] [stderr] 73 |         frame_time = t1.elapsed().unwrap().as_float_secs() as f32;
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ method not found in `std::time::Duration`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `ray_cast_tui`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "62ee9d22e51988367f2cef4826bd5acf4b4b19f76f6e5b0b8aeabd693e9bea0d"`
[INFO] running `"docker" "rm" "-f" "62ee9d22e51988367f2cef4826bd5acf4b4b19f76f6e5b0b8aeabd693e9bea0d"`
[INFO] [stdout] 62ee9d22e51988367f2cef4826bd5acf4b4b19f76f6e5b0b8aeabd693e9bea0d