[INFO] fetching crate subslice 0.2.3...
[INFO] testing subslice-0.2.3 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate subslice 0.2.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate subslice 0.2.3 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subslice 0.2.3
[INFO] finished tweaking crates.io crate subslice 0.2.3
[INFO] tweaked toml for crates.io crate subslice 0.2.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded defmac v0.1.3
[INFO] [stderr]   Downloaded jetscii v0.3.1
[INFO] [stderr]   Downloaded galil-seiferas v0.1.5
[INFO] [stderr]   Downloaded quickcheck v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4c36f9b82cfefc43a74a25607e62444d9f0f8f169c053e3c2c9500695645553
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e4c36f9b82cfefc43a74a25607e62444d9f0f8f169c053e3c2c9500695645553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4c36f9b82cfefc43a74a25607e62444d9f0f8f169c053e3c2c9500695645553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c36f9b82cfefc43a74a25607e62444d9f0f8f169c053e3c2c9500695645553", kill_on_drop: false }`
[INFO] [stdout] e4c36f9b82cfefc43a74a25607e62444d9f0f8f169c053e3c2c9500695645553
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff2eb577d2c77c205cf8bdfff9e4ae3825598537ed002eeca66b6241d1e58759
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ff2eb577d2c77c205cf8bdfff9e4ae3825598537ed002eeca66b6241d1e58759", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling subslice v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:18
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:25
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:24
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                        ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "ff2eb577d2c77c205cf8bdfff9e4ae3825598537ed002eeca66b6241d1e58759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff2eb577d2c77c205cf8bdfff9e4ae3825598537ed002eeca66b6241d1e58759", kill_on_drop: false }`
[INFO] [stdout] ff2eb577d2c77c205cf8bdfff9e4ae3825598537ed002eeca66b6241d1e58759
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 201095cf71b2b80020c95d316e8c9362056e7c6db20263db2b19c57ab498ccd1
[INFO] running `Command { std: "docker" "start" "-a" "201095cf71b2b80020c95d316e8c9362056e7c6db20263db2b19c57ab498ccd1", kill_on_drop: false }`
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:18
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:25
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:24
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                        ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling odds v0.2.26
[INFO] [stderr]    Compiling macro-attr v0.2.0
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling quickcheck v0.5.0
[INFO] [stderr]    Compiling subslice v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:305:39
[INFO] [stdout]     |
[INFO] [stdout] 305 |     assert_eq!(2, compute_max_suf_pos((b"aab")));
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:307:39
[INFO] [stdout]     |
[INFO] [stdout] 307 |     assert_eq!(2, compute_max_suf_pos((b"aabaa")));
[INFO] [stdout]     |                                       ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:309:39
[INFO] [stdout]     |
[INFO] [stdout] 309 |     assert_eq!(0, compute_max_suf_pos((b"gcagagag")));
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:310:39
[INFO] [stdout]     |
[INFO] [stdout] 310 |     assert_eq!(2, compute_max_suf_pos((b"banana")));
[INFO] [stdout]     |                                       ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:315:42
[INFO] [stdout]     |
[INFO] [stdout] 315 |     assert_eq!((2, 1), maxsuf_and_period((b"aab")));
[INFO] [stdout]     |                                          ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:316:42
[INFO] [stdout]     |
[INFO] [stdout] 316 |     assert_eq!((2, 3), maxsuf_and_period((b"aabaa")));
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/tw.rs:317:42
[INFO] [stdout]     |
[INFO] [stdout] 317 |     assert_eq!((0, 7), maxsuf_and_period((b"gcagagag")));
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:18
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:735:25
[INFO] [stdout]     |
[INFO] [stdout] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stdout]     |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:17
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:736:24
[INFO] [stdout]     |
[INFO] [stdout] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stdout]     |                        ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.46s
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "201095cf71b2b80020c95d316e8c9362056e7c6db20263db2b19c57ab498ccd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "201095cf71b2b80020c95d316e8c9362056e7c6db20263db2b19c57ab498ccd1", kill_on_drop: false }`
[INFO] [stdout] 201095cf71b2b80020c95d316e8c9362056e7c6db20263db2b19c57ab498ccd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d872b8fe4283375e31cbc05818ef26dd0078b02107c05aff6ca78c1dbcd1db4c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d872b8fe4283375e31cbc05818ef26dd0078b02107c05aff6ca78c1dbcd1db4c", kill_on_drop: false }`
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stderr]    --> src/lib.rs:735:18
[INFO] [stderr]     |
[INFO] [stderr] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stderr]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stderr]    --> src/lib.rs:735:25
[INFO] [stderr]     |
[INFO] [stderr] 735 |     fn rejecting(usize, usize) -> Self::Output;
[INFO] [stderr]     |                         ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stderr]    --> src/lib.rs:736:17
[INFO] [stderr]     |
[INFO] [stderr] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stderr]     |                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stderr]    --> src/lib.rs:736:24
[INFO] [stderr]     |
[INFO] [stderr] 736 |     fn matching(usize, usize) -> Self::Output;
[INFO] [stderr]     |                        ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: `subslice` (lib) generated 4 warnings
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:305:39
[INFO] [stderr]     |
[INFO] [stderr] 305 |     assert_eq!(2, compute_max_suf_pos((b"aab")));
[INFO] [stderr]     |                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:307:39
[INFO] [stderr]     |
[INFO] [stderr] 307 |     assert_eq!(2, compute_max_suf_pos((b"aabaa")));
[INFO] [stderr]     |                                       ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:309:39
[INFO] [stderr]     |
[INFO] [stderr] 309 |     assert_eq!(0, compute_max_suf_pos((b"gcagagag")));
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:310:39
[INFO] [stderr]     |
[INFO] [stderr] 310 |     assert_eq!(2, compute_max_suf_pos((b"banana")));
[INFO] [stderr]     |                                       ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:315:42
[INFO] [stderr]     |
[INFO] [stderr] 315 |     assert_eq!((2, 1), maxsuf_and_period((b"aab")));
[INFO] [stderr]     |                                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:316:42
[INFO] [stderr]     |
[INFO] [stderr] 316 |     assert_eq!((2, 3), maxsuf_and_period((b"aabaa")));
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/tw.rs:317:42
[INFO] [stderr]     |
[INFO] [stderr] 317 |     assert_eq!((0, 7), maxsuf_and_period((b"gcagagag")));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: `subslice` (lib test) generated 11 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/subslice-d3e9c6ef9bb9e72a)
[INFO] [stdout] running 8 tests
[INFO] [stdout] test maximal_suffix ... ok
[INFO] [stdout] test tw::test_find ... ok
[INFO] [stdout] test tw::test_max_suf_pos ... ok
[INFO] [stdout] test tw::test_maxsuf_and_period ... ok
[INFO] [stdout] test tw::test_max ... ok
[INFO] [stdout] test bmh::bmh_preprocess ... ok
[INFO] [stdout] test maximal_suffix_verbose ... ok
[INFO] [stdout] test bmh::bmh_find ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/quick.rs (/opt/rustwide/target/debug/deps/quick-bb95075eaf4563cd)
[INFO] [stderr]    Doc-tests subslice
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d872b8fe4283375e31cbc05818ef26dd0078b02107c05aff6ca78c1dbcd1db4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d872b8fe4283375e31cbc05818ef26dd0078b02107c05aff6ca78c1dbcd1db4c", kill_on_drop: false }`
[INFO] [stdout] d872b8fe4283375e31cbc05818ef26dd0078b02107c05aff6ca78c1dbcd1db4c