[INFO] crate proc-macro-rules 0.2.1 is already in cache
[INFO] checking proc-macro-rules-0.2.1 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate proc-macro-rules 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate proc-macro-rules 0.2.1 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate proc-macro-rules 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate proc-macro-rules 0.2.1
[INFO] tweaked toml for crates.io crate proc-macro-rules 0.2.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bfff23187b5e370a069aa04a842356ddf50d61454fdb532023386255a05dee13
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "bfff23187b5e370a069aa04a842356ddf50d61454fdb532023386255a05dee13"`
[INFO] [stderr]     Checking proc-macro-rules v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78 | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]    | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 90 | /         rules!(tokens => {
[INFO] [stderr] 91 | |             ($finish:ident ($($found:ident)+) # [ $($inner:tt)? ] $($rest:expr)*) => {
[INFO] [stderr] 92 | |                 assert_eq!(finish.to_string(), "hi");
[INFO] [stderr] 93 | |                 assert_eq!(found.len(), 3);
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |             }
[INFO] [stderr] 98 | |         });
[INFO] [stderr]    | |___________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78 | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]    | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 90 | /         rules!(tokens => {
[INFO] [stderr] 91 | |             ($finish:ident ($($found:ident)+) # [ $($inner:tt)? ] $($rest:expr)*) => {
[INFO] [stderr] 92 | |                 assert_eq!(finish.to_string(), "hi");
[INFO] [stderr] 93 | |                 assert_eq!(found.len(), 3);
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |             }
[INFO] [stderr] 98 | |         });
[INFO] [stderr]    | |___________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 105 | /         rules!(tokens => {
[INFO] [stderr] 106 | |             () => {
[INFO] [stderr] 107 | |                 return;
[INFO] [stderr] 108 | |             }
[INFO] [stderr] 109 | |         });
[INFO] [stderr]     | |___________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 105 | /         rules!(tokens => {
[INFO] [stderr] 106 | |             () => {
[INFO] [stderr] 107 | |                 return;
[INFO] [stderr] 108 | |             }
[INFO] [stderr] 109 | |         });
[INFO] [stderr]     | |___________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 117 | /         rules!(tokens => {
[INFO] [stderr] 118 | |             (bar) => {}
[INFO] [stderr] 119 | |         });
[INFO] [stderr]     | |___________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 125 | /             rules!(tokens => {
[INFO] [stderr] 126 | |                 (foo) => {
[INFO] [stderr] 127 | |                     if expected_branch == 0 {
[INFO] [stderr] 128 | |                         return;
[INFO] [stderr] ...   |
[INFO] [stderr] 152 | |                 }
[INFO] [stderr] 153 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 125 | /             rules!(tokens => {
[INFO] [stderr] 126 | |                 (foo) => {
[INFO] [stderr] 127 | |                     if expected_branch == 0 {
[INFO] [stderr] 128 | |                         return;
[INFO] [stderr] ...   |
[INFO] [stderr] 152 | |                 }
[INFO] [stderr] 153 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 165 | /             rules!(tokens => {
[INFO] [stderr] 166 | |                 (foo $(bar),? baz) => {
[INFO] [stderr] 167 | |                     return;
[INFO] [stderr] 168 | |                 }
[INFO] [stderr] 169 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 165 | /             rules!(tokens => {
[INFO] [stderr] 166 | |                 (foo $(bar),? baz) => {
[INFO] [stderr] 167 | |                     return;
[INFO] [stderr] 168 | |                 }
[INFO] [stderr] 169 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 181 | /             rules!(tokens => {
[INFO] [stderr] 182 | |                 (foo $(bar),+ baz) => {
[INFO] [stderr] 183 | |                     return;
[INFO] [stderr] 184 | |                 }
[INFO] [stderr] 185 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 181 | /             rules!(tokens => {
[INFO] [stderr] 182 | |                 (foo $(bar),+ baz) => {
[INFO] [stderr] 183 | |                     return;
[INFO] [stderr] 184 | |                 }
[INFO] [stderr] 185 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] ...
[INFO] [stderr] 200 | /             rules!(tokens => {
[INFO] [stderr] 201 | |                 (foo $(bar),* baz) => {
[INFO] [stderr] 202 | |                     return;
[INFO] [stderr] 203 | |                 }
[INFO] [stderr] 204 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] ...
[INFO] [stderr] 200 | /             rules!(tokens => {
[INFO] [stderr] 201 | |                 (foo $(bar),* baz) => {
[INFO] [stderr] 202 | |                     return;
[INFO] [stderr] 203 | |                 }
[INFO] [stderr] 204 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78 | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]    | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 90 | /         rules!(tokens => {
[INFO] [stderr] 91 | |             ($finish:ident ($($found:ident)+) # [ $($inner:tt)? ] $($rest:expr)*) => {
[INFO] [stderr] 92 | |                 assert_eq!(finish.to_string(), "hi");
[INFO] [stderr] 93 | |                 assert_eq!(found.len(), 3);
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |             }
[INFO] [stderr] 98 | |         });
[INFO] [stderr]    | |___________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 105 | /         rules!(tokens => {
[INFO] [stderr] 106 | |             () => {
[INFO] [stderr] 107 | |                 return;
[INFO] [stderr] 108 | |             }
[INFO] [stderr] 109 | |         });
[INFO] [stderr]     | |___________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 117 | /         rules!(tokens => {
[INFO] [stderr] 118 | |             (bar) => {}
[INFO] [stderr] 119 | |         });
[INFO] [stderr]     | |___________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 125 | /             rules!(tokens => {
[INFO] [stderr] 126 | |                 (foo) => {
[INFO] [stderr] 127 | |                     if expected_branch == 0 {
[INFO] [stderr] 128 | |                         return;
[INFO] [stderr] ...   |
[INFO] [stderr] 152 | |                 }
[INFO] [stderr] 153 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 165 | /             rules!(tokens => {
[INFO] [stderr] 166 | |                 (foo $(bar),? baz) => {
[INFO] [stderr] 167 | |                     return;
[INFO] [stderr] 168 | |                 }
[INFO] [stderr] 169 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 181 | /             rules!(tokens => {
[INFO] [stderr] 182 | |                 (foo $(bar),+ baz) => {
[INFO] [stderr] 183 | |                     return;
[INFO] [stderr] 184 | |                 }
[INFO] [stderr] 185 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outer`
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr] 78  | | pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | |______________________________________^ help: if this is intentional, prefix it with an underscore: `_outer`
[INFO] [stderr] ...
[INFO] [stderr] 200 | /             rules!(tokens => {
[INFO] [stderr] 201 | |                 (foo $(bar),* baz) => {
[INFO] [stderr] 202 | |                     return;
[INFO] [stderr] 203 | |                 }
[INFO] [stderr] 204 | |             });
[INFO] [stderr]     | |_______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 |    #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr]    |   _^
[INFO] [stderr]    |  |_|
[INFO] [stderr]    | ||
[INFO] [stderr] 78 | || pub use proc_macro_rules_macros::rules;
[INFO] [stderr]    | ||_|____________________________________^
[INFO] [stderr]    |  |_|
[INFO] [stderr]    |    help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 90 | /          rules!(tokens => {
[INFO] [stderr] 91 | |              ($finish:ident ($($found:ident)+) # [ $($inner:tt)? ] $($rest:expr)*) => {
[INFO] [stderr] 92 | |                  assert_eq!(finish.to_string(), "hi");
[INFO] [stderr] 93 | |                  assert_eq!(found.len(), 3);
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |              }
[INFO] [stderr] 98 | |          });
[INFO] [stderr]    | |____________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 |    #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr]    |   _^
[INFO] [stderr]    |  |_|
[INFO] [stderr]    | ||
[INFO] [stderr] 78 | || pub use proc_macro_rules_macros::rules;
[INFO] [stderr]    | ||_|____________________________________^
[INFO] [stderr]    |  |_|
[INFO] [stderr]    |    help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 90 | /          rules!(tokens => {
[INFO] [stderr] 91 | |              ($finish:ident ($($found:ident)+) # [ $($inner:tt)? ] $($rest:expr)*) => {
[INFO] [stderr] 92 | |                  assert_eq!(finish.to_string(), "hi");
[INFO] [stderr] 93 | |                  assert_eq!(found.len(), 3);
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |              }
[INFO] [stderr] 98 | |          });
[INFO] [stderr]    | |____________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  |    #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr]     |   _^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     | ||
[INFO] [stderr] 78  | || pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | ||_|____________________________________^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     |    help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 105 | /          rules!(tokens => {
[INFO] [stderr] 106 | |              () => {
[INFO] [stderr] 107 | |                  return;
[INFO] [stderr] 108 | |              }
[INFO] [stderr] 109 | |          });
[INFO] [stderr]     | |____________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  |    #[proc_macro_hack::proc_macro_hack]
[INFO] [stderr]     |   _^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     | ||
[INFO] [stderr] 78  | || pub use proc_macro_rules_macros::rules;
[INFO] [stderr]     | ||_|____________________________________^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     |    help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 125 | /              rules!(tokens => {
[INFO] [stderr] 126 | |                  (foo) => {
[INFO] [stderr] 127 | |                      if expected_branch == 0 {
[INFO] [stderr] 128 | |                          return;
[INFO] [stderr] ...   |
[INFO] [stderr] 152 | |                  }
[INFO] [stderr] 153 | |              });
[INFO] [stderr]     | |________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "bfff23187b5e370a069aa04a842356ddf50d61454fdb532023386255a05dee13"`
[INFO] running `"docker" "rm" "-f" "bfff23187b5e370a069aa04a842356ddf50d61454fdb532023386255a05dee13"`
[INFO] [stdout] bfff23187b5e370a069aa04a842356ddf50d61454fdb532023386255a05dee13
