[INFO] updating cached repository rvolz/rustrt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rvolz/rustrt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rvolz/rustrt" "work/ex/beta-1.37-6/sources/1.36.0/gh/rvolz/rustrt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rvolz/rustrt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rvolz/rustrt" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rvolz/rustrt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rvolz/rustrt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea996a856c178568bac820f8ddd2eacf03bb8d88
[INFO] sha for GitHub repo rvolz/rustrt: ea996a856c178568bac820f8ddd2eacf03bb8d88
[INFO] validating manifest of rvolz/rustrt on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rvolz/rustrt on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rvolz/rustrt
[INFO] removed 7 missing tests
[INFO] finished frobbing rvolz/rustrt
[INFO] frobbed toml for rvolz/rustrt written to work/ex/beta-1.37-6/sources/1.36.0/gh/rvolz/rustrt/Cargo.toml
[INFO] started frobbing rvolz/rustrt
[INFO] removed 7 missing tests
[INFO] finished frobbing rvolz/rustrt
[INFO] frobbed toml for rvolz/rustrt written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rvolz/rustrt/Cargo.toml
[INFO] crate rvolz/rustrt already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rvolz/rustrt against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rvolz/rustrt:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c9a3953241c7e374270132e579dd4405e2e7413253320c87d6c6e8a56029c348
[INFO] running `"docker" "start" "-a" "c9a3953241c7e374270132e579dd4405e2e7413253320c87d6c6e8a56029c348"`
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling derive_builder v0.7.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling float-cmp v0.4.0
[INFO] [stderr]    Compiling darling_core v0.8.2
[INFO] [stderr]    Compiling darling_macro v0.8.2
[INFO] [stderr]    Compiling darling v0.8.2
[INFO] [stderr]    Compiling derive_builder_core v0.4.0
[INFO] [stderr]    Compiling rustrt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Material`
[INFO] [stderr]   --> src/main.rs:22:23
[INFO] [stderr]    |
[INFO] [stderr] 22 | use crate::material::{Material, material};
[INFO] [stderr]    |                       ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `red`
[INFO] [stderr]    --> src/main.rs:150:7
[INFO] [stderr]     |
[INFO] [stderr] 150 |   let red = color(1.0,0.0,0.0);
[INFO] [stderr]     |       ^^^ help: consider prefixing with an underscore: `_red`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.32s
[INFO] running `"docker" "inspect" "c9a3953241c7e374270132e579dd4405e2e7413253320c87d6c6e8a56029c348"`
[INFO] running `"docker" "rm" "-f" "c9a3953241c7e374270132e579dd4405e2e7413253320c87d6c6e8a56029c348"`
[INFO] [stdout] c9a3953241c7e374270132e579dd4405e2e7413253320c87d6c6e8a56029c348
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rvolz/rustrt:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c9d65b21a73cf587cd1535cfe29469527a65827e104ae373bc9d036aedf3d57a
[INFO] running `"docker" "start" "-a" "c9d65b21a73cf587cd1535cfe29469527a65827e104ae373bc9d036aedf3d57a"`
[INFO] [stderr]    Compiling pathdiff v0.1.0
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling term_size v0.3.1
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]    Compiling globset v0.4.2
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling gherkin_rust v0.4.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling crossbeam-channel v0.3.6
[INFO] [stderr]    Compiling ignore v0.4.6
[INFO] [stderr]    Compiling globwalk v0.5.0
[INFO] [stderr]    Compiling cucumber_rust v0.5.1
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cucumber_rust-0.5.1/src/lib.rs:9:34
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![cfg_attr(feature = "nightly", feature(set_stdio))]
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `cucumber_rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c9d65b21a73cf587cd1535cfe29469527a65827e104ae373bc9d036aedf3d57a"`
[INFO] running `"docker" "rm" "-f" "c9d65b21a73cf587cd1535cfe29469527a65827e104ae373bc9d036aedf3d57a"`
[INFO] [stdout] c9d65b21a73cf587cd1535cfe29469527a65827e104ae373bc9d036aedf3d57a