Dec 18 16:19:39.296 INFO checking futures-io-preview-0.3.0-alpha.10 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:19:39.297 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/futures-io-preview/0.3.0-alpha.10:/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=forbid" "-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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:19:39.612 INFO [stdout] b16af7cb2374715d7869290a501a4ac9ecc8acc2a0eb205206c4bea7e476908e
Dec 18 16:19:39.620 INFO running `"docker" "start" "-a" "b16af7cb2374715d7869290a501a4ac9ecc8acc2a0eb205206c4bea7e476908e"`
Dec 18 16:19:41.556 INFO [stderr]     Checking futures-io-preview v0.3.0-alpha.10 (/opt/crater/workdir)
Dec 18 16:19:42.448 INFO [stderr] error[E0432]: unresolved import `assert_matches`
Dec 18 16:19:42.448 INFO [stderr]  --> tests/cursor.rs:3:5
Dec 18 16:19:42.448 INFO [stderr]   |
Dec 18 16:19:42.448 INFO [stderr] 3 | use assert_matches::assert_matches;
Dec 18 16:19:42.448 INFO [stderr]   |     ^^^^^^^^^^^^^^ use of undeclared type or module `assert_matches`
Dec 18 16:19:42.448 INFO [stderr] 
Dec 18 16:19:42.448 INFO [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr]  --> tests/cursor.rs:5:5
Dec 18 16:19:42.448 INFO [stderr]   |
Dec 18 16:19:42.448 INFO [stderr] 5 | use futures::future::lazy;
Dec 18 16:19:42.448 INFO [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr] 
Dec 18 16:19:42.448 INFO [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr]  --> tests/cursor.rs:6:5
Dec 18 16:19:42.448 INFO [stderr]   |
Dec 18 16:19:42.448 INFO [stderr] 6 | use futures::io::AsyncWrite;
Dec 18 16:19:42.448 INFO [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr] 
Dec 18 16:19:42.448 INFO [stderr] error[E0432]: unresolved import `futures`
Dec 18 16:19:42.448 INFO [stderr]  --> tests/cursor.rs:4:5
Dec 18 16:19:42.448 INFO [stderr]   |
Dec 18 16:19:42.448 INFO [stderr] 4 | use futures::Poll;
Dec 18 16:19:42.448 INFO [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr] 
Dec 18 16:19:42.448 INFO [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr]   --> tests/cursor.rs:12:5
Dec 18 16:19:42.448 INFO [stderr]    |
Dec 18 16:19:42.448 INFO [stderr] 12 |     futures::executor::block_on(lazy(|ctx| {
Dec 18 16:19:42.448 INFO [stderr]    |     ^^^^^^^ use of undeclared type or module `futures`
Dec 18 16:19:42.448 INFO [stderr] 
Dec 18 16:19:42.520 INFO [stderr] error: cannot determine resolution for the macro `assert_matches`
Dec 18 16:19:42.520 INFO [stderr]   --> tests/cursor.rs:13:9
Dec 18 16:19:42.520 INFO [stderr]    |
Dec 18 16:19:42.520 INFO [stderr] 13 |         assert_matches!(cursor.poll_write(ctx, &[1, 2]), Poll::Ready(Ok(2)));
Dec 18 16:19:42.520 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 16:19:42.520 INFO [stderr]    |
Dec 18 16:19:42.520 INFO [stderr]    = note: import resolution is stuck, try simplifying macro imports
Dec 18 16:19:42.520 INFO [stderr] 
Dec 18 16:19:42.520 INFO [stderr] error: cannot determine resolution for the macro `assert_matches`
Dec 18 16:19:42.520 INFO [stderr]   --> tests/cursor.rs:14:9
Dec 18 16:19:42.520 INFO [stderr]    |
Dec 18 16:19:42.520 INFO [stderr] 14 |         assert_matches!(cursor.poll_write(ctx, &[3, 4]), Poll::Ready(Ok(2)));
Dec 18 16:19:42.520 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 16:19:42.520 INFO [stderr]    |
Dec 18 16:19:42.520 INFO [stderr]    = note: import resolution is stuck, try simplifying macro imports
Dec 18 16:19:42.521 INFO [stderr] 
Dec 18 16:19:42.521 INFO [stderr] error: cannot determine resolution for the macro `assert_matches`
Dec 18 16:19:42.521 INFO [stderr]   --> tests/cursor.rs:15:9
Dec 18 16:19:42.521 INFO [stderr]    |
Dec 18 16:19:42.521 INFO [stderr] 15 |         assert_matches!(cursor.poll_write(ctx, &[5, 6]), Poll::Ready(Ok(1)));
Dec 18 16:19:42.521 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 16:19:42.521 INFO [stderr]    |
Dec 18 16:19:42.521 INFO [stderr]    = note: import resolution is stuck, try simplifying macro imports
Dec 18 16:19:42.521 INFO [stderr] 
Dec 18 16:19:42.521 INFO [stderr] error: cannot determine resolution for the macro `assert_matches`
Dec 18 16:19:42.521 INFO [stderr]   --> tests/cursor.rs:16:9
Dec 18 16:19:42.521 INFO [stderr]    |
Dec 18 16:19:42.521 INFO [stderr] 16 |         assert_matches!(cursor.poll_write(ctx, &[6, 7]), Poll::Ready(Ok(0)));
Dec 18 16:19:42.521 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 16:19:42.521 INFO [stderr]    |
Dec 18 16:19:42.521 INFO [stderr]    = note: import resolution is stuck, try simplifying macro imports
Dec 18 16:19:42.521 INFO [stderr] 
Dec 18 16:19:42.521 INFO [stderr] error[E0425]: cannot find function `lazy` in this scope
Dec 18 16:19:42.521 INFO [stderr]   --> tests/cursor.rs:12:33
Dec 18 16:19:42.521 INFO [stderr]    |
Dec 18 16:19:42.521 INFO [stderr] 12 |     futures::executor::block_on(lazy(|ctx| {
Dec 18 16:19:42.521 INFO [stderr]    |                                 ^^^^ not found in this scope
Dec 18 16:19:42.521 INFO [stderr] 
Dec 18 16:19:42.521 INFO [stderr] error: aborting due to 10 previous errors
Dec 18 16:19:42.521 INFO [stderr] 
Dec 18 16:19:42.521 INFO [stderr] Some errors occurred: E0425, E0432, E0433.
Dec 18 16:19:42.521 INFO [stderr] For more information about an error, try `rustc --explain E0425`.
Dec 18 16:19:42.533 INFO [stderr] error: Could not compile `futures-io-preview`.
Dec 18 16:19:42.533 INFO [stderr] 
Dec 18 16:19:42.533 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 16:19:42.882 INFO running `"docker" "inspect" "b16af7cb2374715d7869290a501a4ac9ecc8acc2a0eb205206c4bea7e476908e"`
Dec 18 16:19:42.966 INFO running `"docker" "rm" "-f" "b16af7cb2374715d7869290a501a4ac9ecc8acc2a0eb205206c4bea7e476908e"`
Dec 18 16:19:43.047 INFO [stdout] b16af7cb2374715d7869290a501a4ac9ecc8acc2a0eb205206c4bea7e476908e