[INFO] cloning repository entropic-dev/dstopic
[INFO] running `"git" "clone" "--bare" "git://github.com/entropic-dev/dstopic.git" "work/cache/sources/gh/entropic-dev/dstopic"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/entropic-dev/dstopic'...
[INFO] running `"git" "clone" "work/cache/sources/gh/entropic-dev/dstopic" "work/ex/beta-1.37-6/sources/1.36.0/gh/entropic-dev/dstopic"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/entropic-dev/dstopic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/entropic-dev/dstopic" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/entropic-dev/dstopic"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/entropic-dev/dstopic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 71d2558e380fc53dd148e326679ba32301c85dba
[INFO] sha for GitHub repo entropic-dev/dstopic: 71d2558e380fc53dd148e326679ba32301c85dba
[INFO] validating manifest of entropic-dev/dstopic 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 entropic-dev/dstopic 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 entropic-dev/dstopic
[INFO] removed workspace from entropic-dev/dstopic
[INFO] finished frobbing entropic-dev/dstopic
[INFO] frobbed toml for entropic-dev/dstopic written to work/ex/beta-1.37-6/sources/1.36.0/gh/entropic-dev/dstopic/Cargo.toml
[INFO] started frobbing entropic-dev/dstopic
[INFO] removed workspace from entropic-dev/dstopic
[INFO] finished frobbing entropic-dev/dstopic
[INFO] frobbed toml for entropic-dev/dstopic written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/entropic-dev/dstopic/Cargo.toml
[INFO] crate entropic-dev/dstopic 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssri v3.0.0
[INFO] [stderr]   Downloaded cacache v1.0.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing entropic-dev/dstopic 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-3/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/entropic-dev/dstopic:/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] 175f67d7601a43718b124f8f6b5049d9c2371f123bb526c727c495a63e508847
[INFO] running `"docker" "start" "-a" "175f67d7601a43718b124f8f6b5049d9c2371f123bb526c727c495a63e508847"`
[INFO] [stderr]    Compiling mkdirp v1.0.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling flate2 v1.0.9
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling ssri v3.0.0
[INFO] [stderr]    Compiling hyper v0.12.31
[INFO] [stderr]    Compiling publicsuffix v1.5.2
[INFO] [stderr]    Compiling chownr v2.0.0
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling cacache v1.0.1
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling reqwest v0.9.18
[INFO] [stderr]    Compiling dstopic 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(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cacache`
[INFO] [stderr]  --> src/fetch.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cacache;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `reqwest`
[INFO] [stderr]  --> src/fetch.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use reqwest;
[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 `dstopic`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "175f67d7601a43718b124f8f6b5049d9c2371f123bb526c727c495a63e508847"`
[INFO] running `"docker" "rm" "-f" "175f67d7601a43718b124f8f6b5049d9c2371f123bb526c727c495a63e508847"`
[INFO] [stdout] 175f67d7601a43718b124f8f6b5049d9c2371f123bb526c727c495a63e508847