[INFO] updating cached repository hgzimmerman/ray_cast_tui
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hgzimmerman/ray_cast_tui
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hgzimmerman/ray_cast_tui" "work/ex/beta-1.38-1/sources/1.37.0/gh/hgzimmerman/ray_cast_tui"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hgzimmerman/ray_cast_tui'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hgzimmerman/ray_cast_tui" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hgzimmerman/ray_cast_tui"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hgzimmerman/ray_cast_tui'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b8a2a776704d9d6e79b708fc4dbc66b1d34bb7ff
[INFO] sha for GitHub repo hgzimmerman/ray_cast_tui: b8a2a776704d9d6e79b708fc4dbc66b1d34bb7ff
[INFO] validating manifest of hgzimmerman/ray_cast_tui on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hgzimmerman/ray_cast_tui on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hgzimmerman/ray_cast_tui
[INFO] finished frobbing hgzimmerman/ray_cast_tui
[INFO] frobbed toml for hgzimmerman/ray_cast_tui written to work/ex/beta-1.38-1/sources/1.37.0/gh/hgzimmerman/ray_cast_tui/Cargo.toml
[INFO] started frobbing hgzimmerman/ray_cast_tui
[INFO] finished frobbing hgzimmerman/ray_cast_tui
[INFO] frobbed toml for hgzimmerman/ray_cast_tui written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hgzimmerman/ray_cast_tui/Cargo.toml
[INFO] crate hgzimmerman/ray_cast_tui already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing hgzimmerman/ray_cast_tui against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hgzimmerman/ray_cast_tui:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ffb6205cf1799104f8ab931150e6144ee1bd50fdbf912080e9d82370ab7416f6
[INFO] running `"docker" "start" "-a" "ffb6205cf1799104f8ab931150e6144ee1bd50fdbf912080e9d82370ab7416f6"`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling ray_cast_tui v0.1.0 (/opt/crater/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 type `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]    |                                            ^^^^^^^^^^^^^
[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" "ffb6205cf1799104f8ab931150e6144ee1bd50fdbf912080e9d82370ab7416f6"`
[INFO] running `"docker" "rm" "-f" "ffb6205cf1799104f8ab931150e6144ee1bd50fdbf912080e9d82370ab7416f6"`
[INFO] [stdout] ffb6205cf1799104f8ab931150e6144ee1bd50fdbf912080e9d82370ab7416f6