[INFO] crate gll 0.0.2 is already in cache
[INFO] extracting crate gll 0.0.2 into work/ex/clippy-test-run/sources/stable/reg/gll/0.0.2
[INFO] extracting crate gll 0.0.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gll/0.0.2
[INFO] validating manifest of gll-0.0.2 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 gll-0.0.2 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 gll-0.0.2
[INFO] finished frobbing gll-0.0.2
[INFO] frobbed toml for gll-0.0.2 written to work/ex/clippy-test-run/sources/stable/reg/gll/0.0.2/Cargo.toml
[INFO] started frobbing gll-0.0.2
[INFO] finished frobbing gll-0.0.2
[INFO] frobbed toml for gll-0.0.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gll/0.0.2/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 gll-0.0.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/gll/0.0.2:/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] 16975e34184ad0b246255bdf9a1e80ca99d17bf79f0c2156de7418eee77a5042
[INFO] running `"docker" "start" "-a" "16975e34184ad0b246255bdf9a1e80ca99d17bf79f0c2156de7418eee77a5042"`
[INFO] [stderr]    Compiling indexing v0.3.2
[INFO] [stderr]    Compiling gll v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1477:21
[INFO] [stderr]      |
[INFO] [stderr] 1477 | /                     write!(
[INFO] [stderr] 1478 | |                         s,
[INFO] [stderr] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stderr] 1480 | |                         i,
[INFO] [stderr] ...    |
[INFO] [stderr] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stderr] 1484 | |                     );
[INFO] [stderr]      | |______________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1486:17
[INFO] [stderr]      |
[INFO] [stderr] 1486 |                 write!(s, " }}");
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]    --> src/generate/rust.rs:230:1
[INFO] [stderr]     |
[INFO] [stderr] 230 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::deprecated_cfg_attr)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]     --> src/generate/rust.rs:1090:5
[INFO] [stderr]      |
[INFO] [stderr] 1090 |     #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]     --> src/generate/rust.rs:1343:5
[INFO] [stderr]      |
[INFO] [stderr] 1343 |     #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]    --> src/generate/rust.rs:230:1
[INFO] [stderr]     |
[INFO] [stderr] 230 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::deprecated_cfg_attr)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]     --> src/generate/rust.rs:1090:5
[INFO] [stderr]      |
[INFO] [stderr] 1090 |     #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool_attributes
[INFO] [stderr]     --> src/generate/rust.rs:1343:5
[INFO] [stderr]      |
[INFO] [stderr] 1343 |     #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `#[rustfmt::skip]`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1354:17
[INFO] [stderr]      |
[INFO] [stderr] 1354 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1353:28
[INFO] [stderr]      |
[INFO] [stderr] 1353 |                 let cont = check(&code).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1360:17
[INFO] [stderr]      |
[INFO] [stderr] 1360 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1359:28
[INFO] [stderr]      |
[INFO] [stderr] 1359 |                 let cont = check(&code).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1408:17
[INFO] [stderr]      |
[INFO] [stderr] 1408 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1407:28
[INFO] [stderr]      |
[INFO] [stderr] 1407 |                 let cont = opt(rule.generate_parse(parse_nodes)).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: Try not to call a closure in the expression where it is declared.
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:1793:9
[INFO] [stderr]      |
[INFO] [stderr] 1793 | /         (|| Ok({
[INFO] [stderr] 1794 | |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1795 | |             let node = self.node.unpack_alias();
[INFO] [stderr] 1796 | |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1797 | |             Or::from_sppf(self.parser, node, r)
[INFO] [stderr] 1798 | |         }))().map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_closure_call)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stderr] help: Try doing something like: 
[INFO] [stderr]      |
[INFO] [stderr] 1793 |         Ok({
[INFO] [stderr] 1794 |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1795 |             let node = self.node.unpack_alias();
[INFO] [stderr] 1796 |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1797 |             Or::from_sppf(self.parser, node, r)
[INFO] [stderr] 1798 |         }).map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: Try not to call a closure in the expression where it is declared.
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:1894:9
[INFO] [stderr]      |
[INFO] [stderr] 1894 | /         (|| Ok({
[INFO] [stderr] 1895 | |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1896 | |             let node = self.node.unpack_alias();
[INFO] [stderr] 1897 | |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1898 | |             Concat::from_sppf(self.parser, node, r)
[INFO] [stderr] 1899 | |         }))().map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stderr] help: Try doing something like: 
[INFO] [stderr]      |
[INFO] [stderr] 1894 |         Ok({
[INFO] [stderr] 1895 |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1896 |             let node = self.node.unpack_alias();
[INFO] [stderr] 1897 |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1898 |             Concat::from_sppf(self.parser, node, r)
[INFO] [stderr] 1899 |         }).map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2781:21
[INFO] [stderr]      |
[INFO] [stderr] 2781 | /                     if p.input_consume_left(_range, " ").is_none() {
[INFO] [stderr] 2782 | |                         if p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2783 | |                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2792 | |                         }
[INFO] [stderr] 2793 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2781 |                     if p.input_consume_left(_range, " ").is_none() && p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2782 |     if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2783 |         if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |             if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |                 if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |                 p.ret(c, _range);
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2782:25
[INFO] [stderr]      |
[INFO] [stderr] 2782 | /                         if p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2783 | |                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2791 | |                             }
[INFO] [stderr] 2792 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2782 |                         if p.input_consume_left(_range, "\t").is_none() && p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2783 |     if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |         if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |             if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |             p.ret(c, _range);
[INFO] [stderr] 2787 |             }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2783:29
[INFO] [stderr]      |
[INFO] [stderr] 2783 | /                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2790 | |                                 }
[INFO] [stderr] 2791 | |                             }
[INFO] [stderr]      | |_____________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2783 |                             if p.input_consume_left(_range, "\n").is_none() && p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |         p.ret(c, _range);
[INFO] [stderr] 2787 |         }
[INFO] [stderr] 2788 |     }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2784:33
[INFO] [stderr]      |
[INFO] [stderr] 2784 | /                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2787 | |                                         p.ret(c, _range);
[INFO] [stderr] 2788 | |                                         }
[INFO] [stderr] 2789 | |                                     }
[INFO] [stderr] 2790 | |                                 }
[INFO] [stderr]      | |_________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2784 |                                 if p.input_consume_left(_range, "\r").is_none() && p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |     if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |     p.ret(c, _range);
[INFO] [stderr] 2787 |     }
[INFO] [stderr] 2788 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2785:37
[INFO] [stderr]      |
[INFO] [stderr] 2785 | /                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2787 | |                                         p.ret(c, _range);
[INFO] [stderr] 2788 | |                                         }
[INFO] [stderr] 2789 | |                                     }
[INFO] [stderr]      | |_____________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2785 |                                     if p.input_consume_left(_range, "//").is_none() && p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 | p.ret(c, _range);
[INFO] [stderr] 2787 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2925:21
[INFO] [stderr]      |
[INFO] [stderr] 2925 | /                     if p.input_consume_left(_range, 'a'..='z').is_none() {
[INFO] [stderr] 2926 | |                         if p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2927 | |                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2932 | |                         }
[INFO] [stderr] 2933 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2925 |                     if p.input_consume_left(_range, 'a'..='z').is_none() && p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2926 |     if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2927 |         if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 |         p.ret(c, _range);
[INFO] [stderr] 2929 |         }
[INFO] [stderr] 2930 |     }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2926:25
[INFO] [stderr]      |
[INFO] [stderr] 2926 | /                         if p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2927 | |                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2929 | |                                 p.ret(c, _range);
[INFO] [stderr] 2930 | |                                 }
[INFO] [stderr] 2931 | |                             }
[INFO] [stderr] 2932 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2926 |                         if p.input_consume_left(_range, 'A'..='Z').is_none() && p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2927 |     if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 |     p.ret(c, _range);
[INFO] [stderr] 2929 |     }
[INFO] [stderr] 2930 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2927:29
[INFO] [stderr]      |
[INFO] [stderr] 2927 | /                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2929 | |                                 p.ret(c, _range);
[INFO] [stderr] 2930 | |                                 }
[INFO] [stderr] 2931 | |                             }
[INFO] [stderr]      | |_____________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2927 |                             if p.input_consume_left(_range, "_").is_none() && p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 | p.ret(c, _range);
[INFO] [stderr] 2929 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2976:21
[INFO] [stderr]      |
[INFO] [stderr] 2976 | /                     if p.input_consume_left(_range, "\\").is_none() {
[INFO] [stderr] 2977 | |                         if p.input_consume_left(_range, "\"").is_none() {
[INFO] [stderr] 2978 | |                             if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 2979 | |                             c.code = _C::StrLit__1__1;
[INFO] [stderr] ...    |
[INFO] [stderr] 2982 | |                         }
[INFO] [stderr] 2983 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2976 |                     if p.input_consume_left(_range, "\\").is_none() && p.input_consume_left(_range, "\"").is_none() {
[INFO] [stderr] 2977 |     if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 2978 |     c.code = _C::StrLit__1__1;
[INFO] [stderr] 2979 |     p.threads.spawn(c, _range);
[INFO] [stderr] 2980 |     }
[INFO] [stderr] 2981 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:3004:25
[INFO] [stderr]      |
[INFO] [stderr] 3004 | /                         if p.input_consume_left(_range, "\\").is_none() {
[INFO] [stderr] 3005 | |                             if p.input_consume_left(_range, "\'").is_none() {
[INFO] [stderr] 3006 | |                                 if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 3007 | |                                 c.code = _C::CharLit__0;
[INFO] [stderr] ...    |
[INFO] [stderr] 3010 | |                             }
[INFO] [stderr] 3011 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 3004 |                         if p.input_consume_left(_range, "\\").is_none() && p.input_consume_left(_range, "\'").is_none() {
[INFO] [stderr] 3005 |     if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 3006 |     c.code = _C::CharLit__0;
[INFO] [stderr] 3007 |     p.threads.spawn(c, _range);
[INFO] [stderr] 3008 |     }
[INFO] [stderr] 3009 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1354:17
[INFO] [stderr]      |
[INFO] [stderr] 1354 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1353:28
[INFO] [stderr]      |
[INFO] [stderr] 1353 |                 let cont = check(&code).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1360:17
[INFO] [stderr]      |
[INFO] [stderr] 1360 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1359:28
[INFO] [stderr]      |
[INFO] [stderr] 1359 |                 let cont = check(&code).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]     --> src/generate/rust.rs:1408:17
[INFO] [stderr]      |
[INFO] [stderr] 1408 |                 cont
[INFO] [stderr]      |                 ^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]     --> src/generate/rust.rs:1407:28
[INFO] [stderr]      |
[INFO] [stderr] 1407 |                 let cont = opt(rule.generate_parse(parse_nodes)).apply(cont);
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: Try not to call a closure in the expression where it is declared.
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:1793:9
[INFO] [stderr]      |
[INFO] [stderr] 1793 | /         (|| Ok({
[INFO] [stderr] 1794 | |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1795 | |             let node = self.node.unpack_alias();
[INFO] [stderr] 1796 | |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1797 | |             Or::from_sppf(self.parser, node, r)
[INFO] [stderr] 1798 | |         }))().map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_closure_call)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stderr] help: Try doing something like: 
[INFO] [stderr]      |
[INFO] [stderr] 1793 |         Ok({
[INFO] [stderr] 1794 |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1795 |             let node = self.node.unpack_alias();
[INFO] [stderr] 1796 |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1797 |             Or::from_sppf(self.parser, node, r)
[INFO] [stderr] 1798 |         }).map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: Try not to call a closure in the expression where it is declared.
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:1894:9
[INFO] [stderr]      |
[INFO] [stderr] 1894 | /         (|| Ok({
[INFO] [stderr] 1895 | |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1896 | |             let node = self.node.unpack_alias();
[INFO] [stderr] 1897 | |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1898 | |             Concat::from_sppf(self.parser, node, r)
[INFO] [stderr] 1899 | |         }))().map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stderr] help: Try doing something like: 
[INFO] [stderr]      |
[INFO] [stderr] 1894 |         Ok({
[INFO] [stderr] 1895 |             let sppf = &self.parser.sppf;
[INFO] [stderr] 1896 |             let node = self.node.unpack_alias();
[INFO] [stderr] 1897 |             let r = traverse!(one(sppf, node) _);
[INFO] [stderr] 1898 |             Concat::from_sppf(self.parser, node, r)
[INFO] [stderr] 1899 |         }).map_err(|::gll::runtime::MoreThanOne| Ambiguity(self))
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2781:21
[INFO] [stderr]      |
[INFO] [stderr] 2781 | /                     if p.input_consume_left(_range, " ").is_none() {
[INFO] [stderr] 2782 | |                         if p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2783 | |                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2792 | |                         }
[INFO] [stderr] 2793 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2781 |                     if p.input_consume_left(_range, " ").is_none() && p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2782 |     if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2783 |         if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |             if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |                 if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |                 p.ret(c, _range);
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2782:25
[INFO] [stderr]      |
[INFO] [stderr] 2782 | /                         if p.input_consume_left(_range, "\t").is_none() {
[INFO] [stderr] 2783 | |                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2791 | |                             }
[INFO] [stderr] 2792 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2782 |                         if p.input_consume_left(_range, "\t").is_none() && p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2783 |     if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |         if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |             if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |             p.ret(c, _range);
[INFO] [stderr] 2787 |             }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2783:29
[INFO] [stderr]      |
[INFO] [stderr] 2783 | /                             if p.input_consume_left(_range, "\n").is_none() {
[INFO] [stderr] 2784 | |                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2790 | |                                 }
[INFO] [stderr] 2791 | |                             }
[INFO] [stderr]      | |_____________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2783 |                             if p.input_consume_left(_range, "\n").is_none() && p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2784 |     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |         p.ret(c, _range);
[INFO] [stderr] 2787 |         }
[INFO] [stderr] 2788 |     }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2784:33
[INFO] [stderr]      |
[INFO] [stderr] 2784 | /                                 if p.input_consume_left(_range, "\r").is_none() {
[INFO] [stderr] 2785 | |                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2787 | |                                         p.ret(c, _range);
[INFO] [stderr] 2788 | |                                         }
[INFO] [stderr] 2789 | |                                     }
[INFO] [stderr] 2790 | |                                 }
[INFO] [stderr]      | |_________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2784 |                                 if p.input_consume_left(_range, "\r").is_none() && p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2785 |     if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 |     p.ret(c, _range);
[INFO] [stderr] 2787 |     }
[INFO] [stderr] 2788 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2785:37
[INFO] [stderr]      |
[INFO] [stderr] 2785 | /                                     if p.input_consume_left(_range, "//").is_none() {
[INFO] [stderr] 2786 | |                                         if p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2787 | |                                         p.ret(c, _range);
[INFO] [stderr] 2788 | |                                         }
[INFO] [stderr] 2789 | |                                     }
[INFO] [stderr]      | |_____________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2785 |                                     if p.input_consume_left(_range, "//").is_none() && p.input_consume_left(_range, "/*").is_none() {
[INFO] [stderr] 2786 | p.ret(c, _range);
[INFO] [stderr] 2787 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2925:21
[INFO] [stderr]      |
[INFO] [stderr] 2925 | /                     if p.input_consume_left(_range, 'a'..='z').is_none() {
[INFO] [stderr] 2926 | |                         if p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2927 | |                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] ...    |
[INFO] [stderr] 2932 | |                         }
[INFO] [stderr] 2933 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2925 |                     if p.input_consume_left(_range, 'a'..='z').is_none() && p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2926 |     if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2927 |         if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 |         p.ret(c, _range);
[INFO] [stderr] 2929 |         }
[INFO] [stderr] 2930 |     }
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2926:25
[INFO] [stderr]      |
[INFO] [stderr] 2926 | /                         if p.input_consume_left(_range, 'A'..='Z').is_none() {
[INFO] [stderr] 2927 | |                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2929 | |                                 p.ret(c, _range);
[INFO] [stderr] 2930 | |                                 }
[INFO] [stderr] 2931 | |                             }
[INFO] [stderr] 2932 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2926 |                         if p.input_consume_left(_range, 'A'..='Z').is_none() && p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2927 |     if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 |     p.ret(c, _range);
[INFO] [stderr] 2929 |     }
[INFO] [stderr] 2930 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2927:29
[INFO] [stderr]      |
[INFO] [stderr] 2927 | /                             if p.input_consume_left(_range, "_").is_none() {
[INFO] [stderr] 2928 | |                                 if p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2929 | |                                 p.ret(c, _range);
[INFO] [stderr] 2930 | |                                 }
[INFO] [stderr] 2931 | |                             }
[INFO] [stderr]      | |_____________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2927 |                             if p.input_consume_left(_range, "_").is_none() && p.input_consume_left(_range, '0'..='9').is_none() {
[INFO] [stderr] 2928 | p.ret(c, _range);
[INFO] [stderr] 2929 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2976:21
[INFO] [stderr]      |
[INFO] [stderr] 2976 | /                     if p.input_consume_left(_range, "\\").is_none() {
[INFO] [stderr] 2977 | |                         if p.input_consume_left(_range, "\"").is_none() {
[INFO] [stderr] 2978 | |                             if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 2979 | |                             c.code = _C::StrLit__1__1;
[INFO] [stderr] ...    |
[INFO] [stderr] 2982 | |                         }
[INFO] [stderr] 2983 | |                     }
[INFO] [stderr]      | |_____________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 2976 |                     if p.input_consume_left(_range, "\\").is_none() && p.input_consume_left(_range, "\"").is_none() {
[INFO] [stderr] 2977 |     if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 2978 |     c.code = _C::StrLit__1__1;
[INFO] [stderr] 2979 |     p.threads.spawn(c, _range);
[INFO] [stderr] 2980 |     }
[INFO] [stderr] 2981 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:3004:25
[INFO] [stderr]      |
[INFO] [stderr] 3004 | /                         if p.input_consume_left(_range, "\\").is_none() {
[INFO] [stderr] 3005 | |                             if p.input_consume_left(_range, "\'").is_none() {
[INFO] [stderr] 3006 | |                                 if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 3007 | |                                 c.code = _C::CharLit__0;
[INFO] [stderr] ...    |
[INFO] [stderr] 3010 | |                             }
[INFO] [stderr] 3011 | |                         }
[INFO] [stderr]      | |_________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 3004 |                         if p.input_consume_left(_range, "\\").is_none() && p.input_consume_left(_range, "\'").is_none() {
[INFO] [stderr] 3005 |     if let Some(_range) = p.input_consume_left(_range, '\u{0}'..='\u{10ffff}') {
[INFO] [stderr] 3006 |     c.code = _C::CharLit__0;
[INFO] [stderr] 3007 |     p.threads.spawn(c, _range);
[INFO] [stderr] 3008 |     }
[INFO] [stderr] 3009 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/generate/rust.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |     ) -> Option<Vec<(Rc<Rule<Pat>>, &str, OrderMap<&str, OrderSet<Vec<usize>>>)>> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/generate/rust.rs:45:24
[INFO] [stderr]    |
[INFO] [stderr] 45 |                     if path.len() == 0 {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `path.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/generate/rust.rs:108:22
[INFO] [stderr]     |
[INFO] [stderr] 108 |           parse_nodes: &RefCell<
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 109 | |             OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 110 | |         >,
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/generate/rust.rs:168:22
[INFO] [stderr]     |
[INFO] [stderr] 168 |           parse_nodes: &RefCell<
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 169 | |             OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 170 | |         >,
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 70
[INFO] [stderr]     --> src/generate/rust.rs:235:5
[INFO] [stderr]      |
[INFO] [stderr] 235  | /     pub fn generate_rust_with_options(&self, options: Options) -> String {
[INFO] [stderr] 236  | |         self.check();
[INFO] [stderr] 237  | |
[INFO] [stderr] 238  | |         let mut out = String::new();
[INFO] [stderr] ...    |
[INFO] [stderr] 1019 | |         out
[INFO] [stderr] 1020 | |     }
[INFO] [stderr]      | |_____^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/generate/rust.rs:862:9
[INFO] [stderr]     |
[INFO] [stderr] 862 | /         let mut substitute = vec![];
[INFO] [stderr] 863 | |         if options.no_macros {
[INFO] [stderr] 864 | |             substitute = all_parse_nodes.iter().enumerate().map(|(i, (kind, _, _))| {
[INFO] [stderr] 865 | |                 (kind.to_string(), format!("_P::_{}", i))
[INFO] [stderr] ...   |
[INFO] [stderr] 876 | | ");
[INFO] [stderr] 877 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]     |
[INFO] [stderr] 862 |         let <mut> substitute = if options.no_macros { all_parse_nodes.iter().enumerate().map(|(i, (kind, _, _))| {
[INFO] [stderr] 863 |                 (kind.to_string(), format!("_P::_{}", i))
[INFO] [stderr] 864 |             }).collect() } else { ..; < [ _ ] > :: into_vec ( box [ $ ( $ x ) , * ] ) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]     --> src/generate/rust.rs:1059:18
[INFO] [stderr]      |
[INFO] [stderr] 1059 |     fn to_inline(&mut self) -> &mut String {
[INFO] [stderr]      |                  ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]     --> src/generate/rust.rs:1079:17
[INFO] [stderr]      |
[INFO] [stderr] 1079 |     fn to_label(&mut self) -> &mut CodeLabel {
[INFO] [stderr]      |                 ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]     --> src/generate/rust.rs:1289:24
[INFO] [stderr]      |
[INFO] [stderr] 1289 |                   if let None = nested_frames[child_cont.nested_frames.len() - 1] {
[INFO] [stderr]      |  _________________-      ^^^^
[INFO] [stderr] 1290 | |                     let inner_fn_label = mem::replace(child_cont.fn_code_label, outer_fn_label);
[INFO] [stderr] 1291 | |                     child_cont.reify_as(inner_fn_label);
[INFO] [stderr] 1292 | |                     child_cont =
[INFO] [stderr] 1293 | |                         call(mem::replace(child_cont.to_label(), ret_label)).apply(child_cont);
[INFO] [stderr] 1294 | |                     *child_cont.nested_frames.last_mut().unwrap() = None;
[INFO] [stderr] 1295 | |                 }
[INFO] [stderr]      | |_________________- help: try this: `if nested_frames[child_cont.nested_frames.len() - 1].is_none()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]     --> src/generate/rust.rs:1346:22
[INFO] [stderr]      |
[INFO] [stderr] 1346 |         parse_nodes: Option<&'a RefCell<OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>>>
[INFO] [stderr]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/generate/rust.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |     ) -> Option<Vec<(Rc<Rule<Pat>>, &str, OrderMap<&str, OrderSet<Vec<usize>>>)>> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/generate/rust.rs:45:24
[INFO] [stderr]    |
[INFO] [stderr] 45 |                     if path.len() == 0 {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `path.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/generate/rust.rs:108:22
[INFO] [stderr]     |
[INFO] [stderr] 108 |           parse_nodes: &RefCell<
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 109 | |             OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 110 | |         >,
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/generate/rust.rs:168:22
[INFO] [stderr]     |
[INFO] [stderr] 168 |           parse_nodes: &RefCell<
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 169 | |             OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 170 | |         >,
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]     --> src/generate/rust.rs:1452:22
[INFO] [stderr]      |
[INFO] [stderr] 1452 |           parse_nodes: &RefCell<
[INFO] [stderr]      |  ______________________^
[INFO] [stderr] 1453 | |             OrderMap<Rc<Self>, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 1454 | |         >,
[INFO] [stderr]      | |_________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1477:21
[INFO] [stderr]      |
[INFO] [stderr] 1477 | /                     write!(
[INFO] [stderr] 1478 | |                         s,
[INFO] [stderr] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stderr] 1480 | |                         i,
[INFO] [stderr] ...    |
[INFO] [stderr] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stderr] 1484 | |                     );
[INFO] [stderr]      | |______________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1486:17
[INFO] [stderr]      |
[INFO] [stderr] 1486 |                 write!(s, " }}");
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 70
[INFO] [stderr]     --> src/generate/rust.rs:235:5
[INFO] [stderr]      |
[INFO] [stderr] 235  | /     pub fn generate_rust_with_options(&self, options: Options) -> String {
[INFO] [stderr] 236  | |         self.check();
[INFO] [stderr] 237  | |
[INFO] [stderr] 238  | |         let mut out = String::new();
[INFO] [stderr] ...    |
[INFO] [stderr] 1019 | |         out
[INFO] [stderr] 1020 | |     }
[INFO] [stderr]      | |_____^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `grammar::Grammar<Pat>`
[INFO] [stderr]   --> src/grammar.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | /     pub fn new() -> Self {
[INFO] [stderr] 44 | |         Grammar {
[INFO] [stderr] 45 | |             rules: OrderMap::new(),
[INFO] [stderr] 46 | |         }
[INFO] [stderr] 47 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 38 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/runtime.rs:63:20
[INFO] [stderr]    |
[INFO] [stderr] 63 |             .split("\n")
[INFO] [stderr]    |                    ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stderr]    --> src/runtime.rs:103:18
[INFO] [stderr]     |
[INFO] [stderr] 103 |         unsafe { self.begin().offset(self.0.len() as isize) }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.begin().add(self.0.len())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_offset_with_cast)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/generate/rust.rs:862:9
[INFO] [stderr]     |
[INFO] [stderr] 862 | /         let mut substitute = vec![];
[INFO] [stderr] 863 | |         if options.no_macros {
[INFO] [stderr] 864 | |             substitute = all_parse_nodes.iter().enumerate().map(|(i, (kind, _, _))| {
[INFO] [stderr] 865 | |                 (kind.to_string(), format!("_P::_{}", i))
[INFO] [stderr] ...   |
[INFO] [stderr] 876 | | ");
[INFO] [stderr] 877 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]     |
[INFO] [stderr] 862 |         let <mut> substitute = if options.no_macros { all_parse_nodes.iter().enumerate().map(|(i, (kind, _, _))| {
[INFO] [stderr] 863 |                 (kind.to_string(), format!("_P::_{}", i))
[INFO] [stderr] 864 |             }).collect() } else { ..; < [ _ ] > :: into_vec ( box [ $ ( $ x ) , * ] ) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/runtime.rs:368:24
[INFO] [stderr]     |
[INFO] [stderr] 368 |                     if !t.range.contains(old.range.start()).is_some() {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t.range.contains(old.range.start()).is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `runtime::nd::Id<T>`
[INFO] [stderr]    --> src/runtime.rs:739:9
[INFO] [stderr]     |
[INFO] [stderr] 739 | /         pub fn new() -> Self {
[INFO] [stderr] 740 | |             Id(PhantomData)
[INFO] [stderr] 741 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 736 |     #[derive(Default)]
[INFO] [stderr] 737 |     pub struct Id<T>(PhantomData<T>);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]     --> src/generate/rust.rs:1059:18
[INFO] [stderr]      |
[INFO] [stderr] 1059 |     fn to_inline(&mut self) -> &mut String {
[INFO] [stderr]      |                  ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]     --> src/generate/rust.rs:1079:17
[INFO] [stderr]      |
[INFO] [stderr] 1079 |     fn to_label(&mut self) -> &mut CodeLabel {
[INFO] [stderr]      |                 ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]     --> src/generate/rust.rs:1289:24
[INFO] [stderr]      |
[INFO] [stderr] 1289 |                   if let None = nested_frames[child_cont.nested_frames.len() - 1] {
[INFO] [stderr]      |  _________________-      ^^^^
[INFO] [stderr] 1290 | |                     let inner_fn_label = mem::replace(child_cont.fn_code_label, outer_fn_label);
[INFO] [stderr] 1291 | |                     child_cont.reify_as(inner_fn_label);
[INFO] [stderr] 1292 | |                     child_cont =
[INFO] [stderr] 1293 | |                         call(mem::replace(child_cont.to_label(), ret_label)).apply(child_cont);
[INFO] [stderr] 1294 | |                     *child_cont.nested_frames.last_mut().unwrap() = None;
[INFO] [stderr] 1295 | |                 }
[INFO] [stderr]      | |_________________- help: try this: `if nested_frames[child_cont.nested_frames.len() - 1].is_none()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]     --> src/generate/rust.rs:1346:22
[INFO] [stderr]      |
[INFO] [stderr] 1346 |         parse_nodes: Option<&'a RefCell<OrderMap<Self, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>>>
[INFO] [stderr]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]     --> src/generate/rust.rs:1452:22
[INFO] [stderr]      |
[INFO] [stderr] 1452 |           parse_nodes: &RefCell<
[INFO] [stderr]      |  ______________________^
[INFO] [stderr] 1453 | |             OrderMap<Rc<Self>, (ParseNodeKind, Option<ParseNodeShape<ParseNodeKind>>)>,
[INFO] [stderr] 1454 | |         >,
[INFO] [stderr]      | |_________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:958:31
[INFO] [stderr]     |
[INFO] [stderr] 958 |     fn one_list_head(self) -> ListHead<Result<(Handle<'a, 'i, I, T>, Handle<'a, 'i, I, [T]>), Ambiguity<Self>>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1477:21
[INFO] [stderr]      |
[INFO] [stderr] 1477 | /                     write!(
[INFO] [stderr] 1478 | |                         s,
[INFO] [stderr] 1479 | |                         "{} _{}: {} => {},",
[INFO] [stderr] 1480 | |                         i,
[INFO] [stderr] ...    |
[INFO] [stderr] 1483 | |                         rule.generate_traverse_shape(true, parse_nodes)
[INFO] [stderr] 1484 | |                     );
[INFO] [stderr]      | |______________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/generate/rust.rs:1486:17
[INFO] [stderr]      |
[INFO] [stderr] 1486 |                 write!(s, " }}");
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]      = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `grammar::Grammar<Pat>`
[INFO] [stderr]   --> src/grammar.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | /     pub fn new() -> Self {
[INFO] [stderr] 44 | |         Grammar {
[INFO] [stderr] 45 | |             rules: OrderMap::new(),
[INFO] [stderr] 46 | |         }
[INFO] [stderr] 47 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 38 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/runtime.rs:63:20
[INFO] [stderr]    |
[INFO] [stderr] 63 |             .split("\n")
[INFO] [stderr]    |                    ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stderr]    --> src/runtime.rs:103:18
[INFO] [stderr]     |
[INFO] [stderr] 103 |         unsafe { self.begin().offset(self.0.len() as isize) }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.begin().add(self.0.len())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_offset_with_cast)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/runtime.rs:368:24
[INFO] [stderr]     |
[INFO] [stderr] 368 |                     if !t.range.contains(old.range.start()).is_some() {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t.range.contains(old.range.start()).is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `runtime::nd::Id<T>`
[INFO] [stderr]    --> src/runtime.rs:739:9
[INFO] [stderr]     |
[INFO] [stderr] 739 | /         pub fn new() -> Self {
[INFO] [stderr] 740 | |             Id(PhantomData)
[INFO] [stderr] 741 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 736 |     #[derive(Default)]
[INFO] [stderr] 737 |     pub struct Id<T>(PhantomData<T>);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:958:31
[INFO] [stderr]     |
[INFO] [stderr] 958 |     fn one_list_head(self) -> ListHead<Result<(Handle<'a, 'i, I, T>, Handle<'a, 'i, I, [T]>), Ambiguity<Self>>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 108
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2775:1
[INFO] [stderr]      |
[INFO] [stderr] 2775 | / fn parse<I>(p: &mut ::gll::runtime::Parser<_P, _C, I>)
[INFO] [stderr] 2776 | | where I: ::gll::runtime::Input<Slice = str>
[INFO] [stderr] 2777 | | {
[INFO] [stderr] 2778 | |     while let Some(Call { callee: mut c, range: _range }) = p.threads.steal() {
[INFO] [stderr] ...    |
[INFO] [stderr] 3530 | |     }
[INFO] [stderr] 3531 | | }
[INFO] [stderr]      | |_^
[INFO] [stderr]      |
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 108
[INFO] [stderr]     --> /opt/crater/target/debug/build/gll-2d2ee29eaa4faf6a/out/parse_grammar.rs:2775:1
[INFO] [stderr]      |
[INFO] [stderr] 2775 | / fn parse<I>(p: &mut ::gll::runtime::Parser<_P, _C, I>)
[INFO] [stderr] 2776 | | where I: ::gll::runtime::Input<Slice = str>
[INFO] [stderr] 2777 | | {
[INFO] [stderr] 2778 | |     while let Some(Call { callee: mut c, range: _range }) = p.threads.steal() {
[INFO] [stderr] ...    |
[INFO] [stderr] 3530 | |     }
[INFO] [stderr] 3531 | | }
[INFO] [stderr]      | |_^
[INFO] [stderr]      |
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.50s
[INFO] running `"docker" "inspect" "16975e34184ad0b246255bdf9a1e80ca99d17bf79f0c2156de7418eee77a5042"`
[INFO] running `"docker" "rm" "-f" "16975e34184ad0b246255bdf9a1e80ca99d17bf79f0c2156de7418eee77a5042"`
[INFO] [stdout] 16975e34184ad0b246255bdf9a1e80ca99d17bf79f0c2156de7418eee77a5042