[INFO] crate futures-util-preview 0.3.0-alpha.18 is already in cache
[INFO] testing futures-util-preview-0.3.0-alpha.18 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate futures-util-preview 0.3.0-alpha.18 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate futures-util-preview 0.3.0-alpha.18 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-util-preview 0.3.0-alpha.18
[INFO] finished tweaking crates.io crate futures-util-preview 0.3.0-alpha.18
[INFO] tweaked toml for crates.io crate futures-util-preview 0.3.0-alpha.18 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 6c134b91f00c254ce344ea463f58765da8bbfedf7719079c25a8f9856a1c5539
[INFO] running `"docker" "start" "-a" "6c134b91f00c254ce344ea463f58765da8bbfedf7719079c25a8f9856a1c5539"`
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `"docker" "inspect" "6c134b91f00c254ce344ea463f58765da8bbfedf7719079c25a8f9856a1c5539"`
[INFO] running `"docker" "rm" "-f" "6c134b91f00c254ce344ea463f58765da8bbfedf7719079c25a8f9856a1c5539"`
[INFO] [stdout] 6c134b91f00c254ce344ea463f58765da8bbfedf7719079c25a8f9856a1c5539
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a7acb6556028f7c182d444833d8274b0759341edf5ac8e44b726c106fe4394a7
[INFO] running `"docker" "start" "-a" "a7acb6556028f7c182d444833d8274b0759341edf5ac8e44b726c106fe4394a7"`
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]   --> src/try_future/try_chain.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     use futures_test::task::noop_context;
[INFO] [stderr]    |         ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> src/try_future/try_chain.rs:93:22
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let mut cx = noop_context();
[INFO] [stderr]    |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `futures-util-preview`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a7acb6556028f7c182d444833d8274b0759341edf5ac8e44b726c106fe4394a7"`
[INFO] running `"docker" "rm" "-f" "a7acb6556028f7c182d444833d8274b0759341edf5ac8e44b726c106fe4394a7"`
[INFO] [stdout] a7acb6556028f7c182d444833d8274b0759341edf5ac8e44b726c106fe4394a7