[INFO] updating cached repository jonhoo/rust-tcp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jonhoo/rust-tcp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jonhoo/rust-tcp" "work/ex/beta-1.37-6/sources/1.36.0/gh/jonhoo/rust-tcp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jonhoo/rust-tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jonhoo/rust-tcp" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonhoo/rust-tcp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonhoo/rust-tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 72d24437381915ee6c42f6dbd05bb5355719430c
[INFO] sha for GitHub repo jonhoo/rust-tcp: 72d24437381915ee6c42f6dbd05bb5355719430c
[INFO] validating manifest of jonhoo/rust-tcp 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 jonhoo/rust-tcp 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 jonhoo/rust-tcp
[INFO] finished frobbing jonhoo/rust-tcp
[INFO] frobbed toml for jonhoo/rust-tcp written to work/ex/beta-1.37-6/sources/1.36.0/gh/jonhoo/rust-tcp/Cargo.toml
[INFO] started frobbing jonhoo/rust-tcp
[INFO] finished frobbing jonhoo/rust-tcp
[INFO] frobbed toml for jonhoo/rust-tcp written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonhoo/rust-tcp/Cargo.toml
[INFO] crate jonhoo/rust-tcp 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 jonhoo/rust-tcp against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonhoo/rust-tcp:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 46022f3256634c80acb56485c753907f18416c32f7156d1ad2111cd3d83917a8
[INFO] running `"docker" "start" "-a" "46022f3256634c80acb56485c753907f18416c32f7156d1ad2111cd3d83917a8"`
[INFO] [stderr]    Compiling tokio-sync v0.1.2
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling etherparse v0.8.0
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.5
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio v0.1.15
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling trust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_float)]
[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 `trust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "46022f3256634c80acb56485c753907f18416c32f7156d1ad2111cd3d83917a8"`
[INFO] running `"docker" "rm" "-f" "46022f3256634c80acb56485c753907f18416c32f7156d1ad2111cd3d83917a8"`
[INFO] [stdout] 46022f3256634c80acb56485c753907f18416c32f7156d1ad2111cd3d83917a8