[INFO] updating cached repository https://github.com/zaabjuda/grafaman
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] cbeac74f102b0b165931c8eb8aacbf5ecba99563
[INFO] testing zaabjuda/grafaman against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaabjuda%2Fgrafaman" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaabjuda/grafaman on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zaabjuda/grafaman
[INFO] finished tweaking git repo https://github.com/zaabjuda/grafaman
[INFO] tweaked toml for git repo https://github.com/zaabjuda/grafaman written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/zaabjuda/grafaman already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 24590c8563547016f489e5458f8d44e7356c5fb922b107c76a385e0a82438a03
[INFO] running `"docker" "start" "-a" "24590c8563547016f489e5458f8d44e7356c5fb922b107c76a385e0a82438a03"`
[INFO] [stderr]    Compiling gcc v0.3.42
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling unicode-normalization v0.1.3
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling buf_redux v0.1.3
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling serde v0.9.5
[INFO] [stderr]    Compiling itoa v0.3.0
[INFO] [stderr]    Compiling dtoa v0.4.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling num_cpus v1.2.1
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling rocket_codegen v0.1.6
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling syn v0.11.4
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.6/build.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[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 `rocket_codegen`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "24590c8563547016f489e5458f8d44e7356c5fb922b107c76a385e0a82438a03"`
[INFO] running `"docker" "rm" "-f" "24590c8563547016f489e5458f8d44e7356c5fb922b107c76a385e0a82438a03"`
[INFO] [stdout] 24590c8563547016f489e5458f8d44e7356c5fb922b107c76a385e0a82438a03