[INFO] updating cached repository ThatsGobbles/cursive-test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ThatsGobbles/cursive-test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/cursive-test" "work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cursive-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cursive-test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/cursive-test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cursive-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cursive-test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2370dbb9dc5cd541ca8583b3222035bcd94f282b
[INFO] sha for GitHub repo ThatsGobbles/cursive-test: 2370dbb9dc5cd541ca8583b3222035bcd94f282b
[INFO] validating manifest of ThatsGobbles/cursive-test 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/cursive-test 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/cursive-test
[INFO] finished frobbing ThatsGobbles/cursive-test
[INFO] frobbed toml for ThatsGobbles/cursive-test written to work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cursive-test/Cargo.toml
[INFO] started frobbing ThatsGobbles/cursive-test
[INFO] finished frobbing ThatsGobbles/cursive-test
[INFO] frobbed toml for ThatsGobbles/cursive-test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/cursive-test/Cargo.toml
[INFO] crate ThatsGobbles/cursive-test 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/cursive-test 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/cursive-test:/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] 8278df498c4d499fe74bcfec6d379cd8349cfae6297ebb2b7c7cf5d9540fcf30
[INFO] running `"docker" "start" "-a" "8278df498c4d499fe74bcfec6d379cd8349cfae6297ebb2b7c7cf5d9540fcf30"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling array-macro v1.0.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling enum-map-internals v0.1.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling enum-map-derive v0.4.1
[INFO] [stderr]    Compiling enum-map v0.5.0
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling enumset_derive v0.4.0
[INFO] [stderr]    Compiling enumset v0.4.0
[INFO] [stderr]    Compiling cursive v0.12.0
[INFO] [stderr]    Compiling cursive-test 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(clamp)]
[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 `cursive-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8278df498c4d499fe74bcfec6d379cd8349cfae6297ebb2b7c7cf5d9540fcf30"`
[INFO] running `"docker" "rm" "-f" "8278df498c4d499fe74bcfec6d379cd8349cfae6297ebb2b7c7cf5d9540fcf30"`
[INFO] [stdout] 8278df498c4d499fe74bcfec6d379cd8349cfae6297ebb2b7c7cf5d9540fcf30