[INFO] updating cached repository rozgo/demux-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rozgo/demux-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rozgo/demux-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/rozgo/demux-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rozgo/demux-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rozgo/demux-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rozgo/demux-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rozgo/demux-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4344b0b316e8e7a7a56e1bc01e2f2a9e5ad0c0f
[INFO] sha for GitHub repo rozgo/demux-rs: d4344b0b316e8e7a7a56e1bc01e2f2a9e5ad0c0f
[INFO] validating manifest of rozgo/demux-rs 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 rozgo/demux-rs 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 rozgo/demux-rs
[INFO] finished frobbing rozgo/demux-rs
[INFO] frobbed toml for rozgo/demux-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/rozgo/demux-rs/Cargo.toml
[INFO] started frobbing rozgo/demux-rs
[INFO] finished frobbing rozgo/demux-rs
[INFO] frobbed toml for rozgo/demux-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rozgo/demux-rs/Cargo.toml
[INFO] crate rozgo/demux-rs 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 rozgo/demux-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/rozgo/demux-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 92b1c6b76b4dee54877788ac6b605187d9f6504121b0ed0dd7ea58fc999b8489
[INFO] running `"docker" "start" "-a" "92b1c6b76b4dee54877788ac6b605187d9f6504121b0ed0dd7ea58fc999b8489"`
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling miniz_oxide v0.1.3
[INFO] [stderr]    Compiling clicolors-control v0.2.0
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling tar v0.4.17
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.25/src/lib.rs:161:34
[INFO] [stderr]     |
[INFO] [stderr] 161 | #![cfg_attr(feature = "nightly", feature(pin))]
[INFO] [stderr]     |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling regex v0.2.11
[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 `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "92b1c6b76b4dee54877788ac6b605187d9f6504121b0ed0dd7ea58fc999b8489"`
[INFO] running `"docker" "rm" "-f" "92b1c6b76b4dee54877788ac6b605187d9f6504121b0ed0dd7ea58fc999b8489"`
[INFO] [stdout] 92b1c6b76b4dee54877788ac6b605187d9f6504121b0ed0dd7ea58fc999b8489