[INFO] updating cached repository ThatsGobbles/cheffu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ThatsGobbles/cheffu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/cheffu" "work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cheffu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cheffu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/cheffu" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cheffu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cheffu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 94231f8ac9f9ed33de065b2ab0e3d8809ed7dcb8
[INFO] sha for GitHub repo ThatsGobbles/cheffu: 94231f8ac9f9ed33de065b2ab0e3d8809ed7dcb8
[INFO] validating manifest of ThatsGobbles/cheffu 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 ThatsGobbles/cheffu 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 ThatsGobbles/cheffu
[INFO] finished frobbing ThatsGobbles/cheffu
[INFO] frobbed toml for ThatsGobbles/cheffu written to work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cheffu/Cargo.toml
[INFO] started frobbing ThatsGobbles/cheffu
[INFO] finished frobbing ThatsGobbles/cheffu
[INFO] frobbed toml for ThatsGobbles/cheffu written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cheffu/Cargo.toml
[INFO] crate ThatsGobbles/cheffu 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 ThatsGobbles/cheffu 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/ThatsGobbles/cheffu:/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] b4394abf9ebb079e118e9deacb1fb7e16a44b2730147ddfaad1dd2da10bdbd3c
[INFO] running `"docker" "start" "-a" "b4394abf9ebb079e118e9deacb1fb7e16a44b2730147ddfaad1dd2da10bdbd3c"`
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.5.0
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling regex v0.2.7
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling cheffu 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(entry_or_default)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(type_ascription)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/parallel/gate.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / macro_rules! allow {
[INFO] [stderr] 12 | |     ( $($slot:expr),* $(,)? ) => (Gate::allow(vec!($($slot),*)));
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/parallel/flow.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / macro_rules! splitset {
[INFO] [stderr] 13 | |     ( $($split:expr),* $(,)? ) => (SplitSet::new(btreeset!($($split),*)));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `failure::Error`
[INFO] [stderr]  --> src/processor/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use failure::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `cheffu`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b4394abf9ebb079e118e9deacb1fb7e16a44b2730147ddfaad1dd2da10bdbd3c"`
[INFO] running `"docker" "rm" "-f" "b4394abf9ebb079e118e9deacb1fb7e16a44b2730147ddfaad1dd2da10bdbd3c"`
[INFO] [stdout] b4394abf9ebb079e118e9deacb1fb7e16a44b2730147ddfaad1dd2da10bdbd3c