[INFO] crate hypercore 0.8.1 is already in cache
[INFO] extracting crate hypercore 0.8.1 into work/ex/clippy-test-run/sources/stable/reg/hypercore/0.8.1
[INFO] extracting crate hypercore 0.8.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hypercore/0.8.1
[INFO] validating manifest of hypercore-0.8.1 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hypercore-0.8.1 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hypercore-0.8.1
[INFO] finished frobbing hypercore-0.8.1
[INFO] frobbed toml for hypercore-0.8.1 written to work/ex/clippy-test-run/sources/stable/reg/hypercore/0.8.1/Cargo.toml
[INFO] started frobbing hypercore-0.8.1
[INFO] finished frobbing hypercore-0.8.1
[INFO] frobbed toml for hypercore-0.8.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hypercore/0.8.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting hypercore-0.8.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/hypercore/0.8.1:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 255faa545d6cf758513a9553071dd8222f59752abac4311e5049a017146ee53b
[INFO] running `"docker" "start" "-a" "255faa545d6cf758513a9553071dd8222f59752abac4311e5049a017146ee53b"`
[INFO] [stderr]     Checking mkdirp v0.1.0
[INFO] [stderr]     Checking flat-tree v3.7.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking memory-pager v0.8.0
[INFO] [stderr]     Checking random-access-storage v0.6.0
[INFO] [stderr]     Checking sleep-parser v0.7.0
[INFO] [stderr]     Checking pretty-hash v0.4.0
[INFO] [stderr]     Checking random-access-memory v0.5.0
[INFO] [stderr]     Checking random-access-disk v0.6.0
[INFO] [stderr]     Checking merkle-tree-stream v0.7.0
[INFO] [stderr]     Checking sparse-bitfield v0.8.1
[INFO] [stderr]    Compiling curve25519-dalek v0.20.0
[INFO] [stderr]     Checking tree-index v0.5.0
[INFO] [stderr]     Checking ed25519-dalek v0.8.1
[INFO] [stderr]     Checking hypercore v0.8.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> benches/bench.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[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 `hypercore`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> tests/bitfield.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |   assert_eq!(b.get(1424244), false);
[INFO] [stderr]    |                    ^^^^^^^ help: consider: `1_424_244`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> tests/bitfield.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |   assert_eq!(b.set(1424244, true), Changed);
[INFO] [stderr]    |                    ^^^^^^^ help: consider: `1_424_244`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> tests/bitfield.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 |   assert_eq!(b.set(1424244, true), Unchanged);
[INFO] [stderr]    |                    ^^^^^^^ help: consider: `1_424_244`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> tests/bitfield.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |   assert_eq!(b.get(1424244), true);
[INFO] [stderr]    |                    ^^^^^^^ help: consider: `1_424_244`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> tests/feed.rs:181:7
[INFO] [stderr]     |
[INFO] [stderr] 181 |       return (public, secret);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(public, secret)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "255faa545d6cf758513a9553071dd8222f59752abac4311e5049a017146ee53b"`
[INFO] running `"docker" "rm" "-f" "255faa545d6cf758513a9553071dd8222f59752abac4311e5049a017146ee53b"`
[INFO] [stdout] 255faa545d6cf758513a9553071dd8222f59752abac4311e5049a017146ee53b