[INFO] updating cached repository raskad/poker-web
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/raskad/poker-web
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/raskad/poker-web" "work/ex/beta-1.38-1/sources/1.37.0/gh/raskad/poker-web"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/raskad/poker-web'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/raskad/poker-web" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/raskad/poker-web"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/raskad/poker-web'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 94a3a850ad38a0423f60ae11fccc473ed6928be0
[INFO] sha for GitHub repo raskad/poker-web: 94a3a850ad38a0423f60ae11fccc473ed6928be0
[INFO] validating manifest of raskad/poker-web 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 raskad/poker-web 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 raskad/poker-web
[INFO] finished frobbing raskad/poker-web
[INFO] frobbed toml for raskad/poker-web written to work/ex/beta-1.38-1/sources/1.37.0/gh/raskad/poker-web/Cargo.toml
[INFO] started frobbing raskad/poker-web
[INFO] finished frobbing raskad/poker-web
[INFO] frobbed toml for raskad/poker-web written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/raskad/poker-web/Cargo.toml
[INFO] crate raskad/poker-web 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 raskad/poker-web 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/raskad/poker-web:/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] cfe8f57011c3178f57a2b1f0cc5898ee0853229651fd58bc3503bf71edbd1b3f
[INFO] running `"docker" "start" "-a" "cfe8f57011c3178f57a2b1f0cc5898ee0853229651fd58bc3503bf71edbd1b3f"`
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling askama_escape v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.2
[INFO] [stderr]    Compiling arrayvec v0.4.8
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[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 actix-web v0.7.15
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling socket2 v0.3.8
[INFO] [stderr]    Compiling signal-hook v0.1.6
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling url v1.7.2
[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" "cfe8f57011c3178f57a2b1f0cc5898ee0853229651fd58bc3503bf71edbd1b3f"`
[INFO] running `"docker" "rm" "-f" "cfe8f57011c3178f57a2b1f0cc5898ee0853229651fd58bc3503bf71edbd1b3f"`
[INFO] [stdout] cfe8f57011c3178f57a2b1f0cc5898ee0853229651fd58bc3503bf71edbd1b3f