[INFO] updating cached repository jongiddy/parhaus
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jongiddy/parhaus
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jongiddy/parhaus" "work/ex/beta-1.38-1/sources/1.37.0/gh/jongiddy/parhaus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jongiddy/parhaus'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jongiddy/parhaus" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jongiddy/parhaus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jongiddy/parhaus'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6b1906e75ac1f58b38b306fa6a6e62a33df165e9
[INFO] sha for GitHub repo jongiddy/parhaus: 6b1906e75ac1f58b38b306fa6a6e62a33df165e9
[INFO] validating manifest of jongiddy/parhaus 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 jongiddy/parhaus 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 jongiddy/parhaus
[INFO] finished frobbing jongiddy/parhaus
[INFO] frobbed toml for jongiddy/parhaus written to work/ex/beta-1.38-1/sources/1.37.0/gh/jongiddy/parhaus/Cargo.toml
[INFO] started frobbing jongiddy/parhaus
[INFO] finished frobbing jongiddy/parhaus
[INFO] frobbed toml for jongiddy/parhaus written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jongiddy/parhaus/Cargo.toml
[INFO] crate jongiddy/parhaus 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jongiddy/parhaus/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/hyper`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2`
[INFO] [stderr]     Updating git repository `https://github.com/seanmonstar/want`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/hyper`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2`
[INFO] [stderr]     Updating git repository `https://github.com/seanmonstar/want`
[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 jongiddy/parhaus 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jongiddy/parhaus:/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] 99ddf7a5bd58332d0e5285e1aeada09c50213a4dd8d56b5921290312d9399870
[INFO] running `"docker" "start" "-a" "99ddf7a5bd58332d0e5285e1aeada09c50213a4dd8d56b5921290312d9399870"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling want v0.2.0 (https://github.com/seanmonstar/want?branch=std-future#23cd872e)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/want-51aa3bbe7c1b17c7/23cd872/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(async_await)]
[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 `want`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "99ddf7a5bd58332d0e5285e1aeada09c50213a4dd8d56b5921290312d9399870"`
[INFO] running `"docker" "rm" "-f" "99ddf7a5bd58332d0e5285e1aeada09c50213a4dd8d56b5921290312d9399870"`
[INFO] [stdout] 99ddf7a5bd58332d0e5285e1aeada09c50213a4dd8d56b5921290312d9399870