[INFO] crate improved_slice_patterns 2.0.0 is already in cache
[INFO] checking improved_slice_patterns-2.0.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate improved_slice_patterns 2.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate improved_slice_patterns 2.0.0 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate improved_slice_patterns 2.0.0
[INFO] finished tweaking crates.io crate improved_slice_patterns 2.0.0
[INFO] tweaked toml for crates.io crate improved_slice_patterns 2.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6ec029f8b186b9bb370ae00f15aba10f700b400649ffa2ec31977991a26acd9e
[INFO] running `"docker" "start" "-a" "6ec029f8b186b9bb370ae00f15aba10f700b400649ffa2ec31977991a26acd9e"`
[INFO] [stderr]     Checking improved_slice_patterns v2.0.0 (/opt/rustwide/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(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/lib.rs:180:26
[INFO] [stderr]     |
[INFO] [stderr] 180 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^ help: try using the maximum value for the type: `_y..MAX`
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/lib.rs:180:26
[INFO] [stderr]     |
[INFO] [stderr] 180 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^ help: try using the maximum value for the type: `_x..MAX`
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `improved_slice_patterns`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/lib.rs:187:26
[INFO] [stderr]     |
[INFO] [stderr] 187 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^ help: try using the maximum value for the type: `ys..MAX`
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_y` in this scope
[INFO] [stderr]    --> src/lib.rs:285:20
[INFO] [stderr]     |
[INFO] [stderr] 285 |             [None, _y..] => 3,
[INFO] [stderr]     |                    ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_x` in this scope
[INFO] [stderr]    --> src/lib.rs:286:14
[INFO] [stderr]     |
[INFO] [stderr] 286 |             [_x.., Some(y), Some(z), None] => y - z,
[INFO] [stderr]     |              ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `ys` in this scope
[INFO] [stderr]    --> src/lib.rs:287:19
[INFO] [stderr]     |
[INFO] [stderr] 287 |             [Some(ys)..] => ys.sum(),
[INFO] [stderr]     |                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/lib.rs:180:26
[INFO] [stderr]     |
[INFO] [stderr] 180 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/lib.rs:180:26
[INFO] [stderr]     |
[INFO] [stderr] 180 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/lib.rs:187:26
[INFO] [stderr]     |
[INFO] [stderr] 187 |               ($($acc)*, $x..),
[INFO] [stderr]     |                            ^^
[INFO] [stderr] ...
[INFO] [stderr] 281 | /         match_vec!(v.into_iter();
[INFO] [stderr] 282 | |             [Some(_x), None, None] => 4,
[INFO] [stderr] 283 | |             [Some(_x), None] => 2,
[INFO] [stderr] 284 | |             [None, Some(y)] => 1,
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |             [..] => -1,
[INFO] [stderr] 290 | |         )
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `improved_slice_patterns`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6ec029f8b186b9bb370ae00f15aba10f700b400649ffa2ec31977991a26acd9e"`
[INFO] running `"docker" "rm" "-f" "6ec029f8b186b9bb370ae00f15aba10f700b400649ffa2ec31977991a26acd9e"`
[INFO] [stdout] 6ec029f8b186b9bb370ae00f15aba10f700b400649ffa2ec31977991a26acd9e