[INFO] updating cached repository phansch/mend-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/phansch/mend-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/phansch/mend-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/phansch/mend-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/phansch/mend-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/phansch/mend-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phansch/mend-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phansch/mend-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09f675bac7270e59fe8875cc06742bd8b34e05cc
[INFO] sha for GitHub repo phansch/mend-rs: 09f675bac7270e59fe8875cc06742bd8b34e05cc
[INFO] validating manifest of phansch/mend-rs 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 phansch/mend-rs 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 phansch/mend-rs
[INFO] finished frobbing phansch/mend-rs
[INFO] frobbed toml for phansch/mend-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/phansch/mend-rs/Cargo.toml
[INFO] started frobbing phansch/mend-rs
[INFO] finished frobbing phansch/mend-rs
[INFO] frobbed toml for phansch/mend-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phansch/mend-rs/Cargo.toml
[INFO] crate phansch/mend-rs 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 phansch/mend-rs 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/phansch/mend-rs:/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] 423e1c07aafe421c74da49cd63609956ff3761c878dfb4d1bf46099768b1fcbd
[INFO] running `"docker" "start" "-a" "423e1c07aafe421c74da49cd63609956ff3761c878dfb4d1bf46099768b1fcbd"`
[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]    Compiling try-lock v0.1.0
[INFO] [stderr]    Compiling termcolor v1.0.2
[INFO] [stderr]    Compiling fragile v0.2.1
[INFO] [stderr]    Compiling uname v0.1.1
[INFO] [stderr]    Compiling log v0.4.4
[INFO] [stderr]    Compiling bzip2-sys v0.1.6
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.1.3
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling tempfile v3.0.3
[INFO] [stderr]    Compiling http v0.1.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling tokio-io v0.1.8
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling im v10.2.0
[INFO] [stderr]    Compiling sentry v0.6.1
[INFO] [stderr]    Compiling serde_test v1.0.75
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling serde_json v1.0.26
[INFO] [stderr]    Compiling parking_lot v0.6.3
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling serde_urlencoded v0.5.3
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling libflate v0.1.16
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.5
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.6
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling unidiff v0.2.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling flate2 v1.0.2
[INFO] [stderr]    Compiling h2 v0.1.12
[INFO] [stderr]    Compiling hyperx v0.13.1
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling zip v0.4.2
[INFO] [stderr]    Compiling tokio v0.1.8
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.75
[INFO] [stderr]    Compiling hyper v0.12.8
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling debugid v0.2.0
[INFO] [stderr]    Compiling dotenv v0.9.0
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling failure v0.1.2
[INFO] [stderr]    Compiling hyper-tls v0.3.0
[INFO] [stderr]    Compiling sentry-types v0.5.4
[INFO] [stderr]    Compiling faktory v0.10.0
[INFO] [stderr]    Compiling hubcaps v0.4.10 (https://github.com/softprops/hubcaps.git#721866c1)
[INFO] [stderr]    Compiling hyper-tls v0.1.4
[INFO] [stderr]    Compiling reqwest v0.8.8
[INFO] [stderr]    Compiling mend-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::Stream`
[INFO] [stderr]   --> src/mend_github/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     futures::Stream,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[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 `mend-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "423e1c07aafe421c74da49cd63609956ff3761c878dfb4d1bf46099768b1fcbd"`
[INFO] running `"docker" "rm" "-f" "423e1c07aafe421c74da49cd63609956ff3761c878dfb4d1bf46099768b1fcbd"`
[INFO] [stdout] 423e1c07aafe421c74da49cd63609956ff3761c878dfb4d1bf46099768b1fcbd