[INFO] fetching crate autour_core 0.1.10...
[INFO] checking autour_core-0.1.10 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate autour_core 0.1.10 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate autour_core 0.1.10 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate autour_core 0.1.10
[INFO] finished tweaking crates.io crate autour_core 0.1.10
[INFO] tweaked toml for crates.io crate autour_core 0.1.10 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded graphviz_dot_builder v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e462bb9415a73b4b5b735e43d864a47e15889e741ef4bc8f6797a2a99226bfac
[INFO] running `Command { std: "docker" "start" "-a" "e462bb9415a73b4b5b735e43d864a47e15889e741ef4bc8f6797a2a99226bfac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e462bb9415a73b4b5b735e43d864a47e15889e741ef4bc8f6797a2a99226bfac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e462bb9415a73b4b5b735e43d864a47e15889e741ef4bc8f6797a2a99226bfac", kill_on_drop: false }`
[INFO] [stdout] e462bb9415a73b4b5b735e43d864a47e15889e741ef4bc8f6797a2a99226bfac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e40cf1a3c84997df4e479f1e8c28ba892382f53f3d80cf4685336c0e0205ec7e
[INFO] running `Command { std: "docker" "start" "-a" "e40cf1a3c84997df4e479f1e8c28ba892382f53f3d80cf4685336c0e0205ec7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking graphviz_dot_builder v0.1.2
[INFO] [stderr]     Checking autour_core v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfa/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfait/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfa/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfait/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nfa/implem/build.rs:77:15
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn repeat(mut self, num : usize) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nfa/implem/build.rs:77:15
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn repeat(mut self, num : usize) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/states_map.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (row_id, row) in self.matrix_map_to_nfa_states.iter().enumerate() {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/states_map.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (row_id, row) in self.matrix_map_to_nfa_states.iter().enumerate() {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dfa`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:14
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_dfa`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sm`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:18
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |                  ^^ help: if this is intentional, prefix it with an underscore: `_sm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rsm`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:21
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_rsm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hide_alphabet`
[INFO] [stdout]   --> src/nfait/implem/letter.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn hide_letters(self, hide_alphabet : bool, should_hide: &dyn Fn(&Letter) -> bool) -> Self {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hide_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hide_alphabet`
[INFO] [stdout]   --> src/nfait/implem/letter.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn hide_letters(self, hide_alphabet : bool, should_hide: &dyn Fn(&Letter) -> bool) -> Self {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hide_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_alphabet`
[INFO] [stdout]   --> src/gnfa/implem/letter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 | ...                   new_alphabet: HashSet<Letter>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_term`
[INFO] [stdout]   --> src/bre/term.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |             TermBRE::Kleene(sub_term) => false
[INFO] [stdout]    |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_alphabet`
[INFO] [stdout]   --> src/gnfa/implem/letter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 | ...                   new_alphabet: HashSet<Letter>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_term`
[INFO] [stdout]   --> src/bre/term.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |             TermBRE::Kleene(sub_term) => false
[INFO] [stdout]    |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | /     orig_graph.print_dot(parent_folder,
[INFO] [stdout] 139 | |                          "orig",
[INFO] [stdout] 140 | |                          &GraphVizOutputFormat::png);
[INFO] [stdout]     | |____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let _ = orig_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | /     sm_graph.print_dot(parent_folder,
[INFO] [stdout] 142 | |                        "sm",
[INFO] [stdout] 143 | |                        &GraphVizOutputFormat::png);
[INFO] [stdout]     | |__________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let _ = sm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 | /     rsm_graph.print_dot(parent_folder,
[INFO] [stdout] 145 | |                         "rsm",
[INFO] [stdout] 146 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = rsm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 | /     min_graph.print_dot(parent_folder,
[INFO] [stdout] 148 | |                         "min",
[INFO] [stdout] 149 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let _ = min_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | /     bridge_graph.print_dot(&parent_folder,
[INFO] [stdout] 202 | |                            &name,
[INFO] [stdout] 203 | |                            &GraphVizOutputFormat::svg);
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let _ = bridge_graph.print_dot(&parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/bre/term.rs:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let _ = sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | /     orig_graph.print_dot(parent_folder,
[INFO] [stdout] 139 | |                          "orig",
[INFO] [stdout] 140 | |                          &GraphVizOutputFormat::png);
[INFO] [stdout]     | |____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let _ = orig_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | /     sm_graph.print_dot(parent_folder,
[INFO] [stdout] 142 | |                        "sm",
[INFO] [stdout] 143 | |                        &GraphVizOutputFormat::png);
[INFO] [stdout]     | |__________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let _ = sm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 | /     rsm_graph.print_dot(parent_folder,
[INFO] [stdout] 145 | |                         "rsm",
[INFO] [stdout] 146 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = rsm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 | /     min_graph.print_dot(parent_folder,
[INFO] [stdout] 148 | |                         "min",
[INFO] [stdout] 149 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let _ = min_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | /     bridge_graph.print_dot(&parent_folder,
[INFO] [stdout] 202 | |                            &name,
[INFO] [stdout] 203 | |                            &GraphVizOutputFormat::svg);
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let _ = bridge_graph.print_dot(&parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/bre/term.rs:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let _ = sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "e40cf1a3c84997df4e479f1e8c28ba892382f53f3d80cf4685336c0e0205ec7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40cf1a3c84997df4e479f1e8c28ba892382f53f3d80cf4685336c0e0205ec7e", kill_on_drop: false }`
[INFO] [stdout] e40cf1a3c84997df4e479f1e8c28ba892382f53f3d80cf4685336c0e0205ec7e
[INFO] checking autour_core-0.1.10 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate autour_core 0.1.10 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate autour_core 0.1.10 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate autour_core 0.1.10
[INFO] finished tweaking crates.io crate autour_core 0.1.10
[INFO] tweaked toml for crates.io crate autour_core 0.1.10 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0db82554864b40fad0e7aa0e363eabab742c39e0d0e7726c7577a89e0332d7d8
[INFO] running `Command { std: "docker" "start" "-a" "0db82554864b40fad0e7aa0e363eabab742c39e0d0e7726c7577a89e0332d7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db82554864b40fad0e7aa0e363eabab742c39e0d0e7726c7577a89e0332d7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db82554864b40fad0e7aa0e363eabab742c39e0d0e7726c7577a89e0332d7d8", kill_on_drop: false }`
[INFO] [stdout] 0db82554864b40fad0e7aa0e363eabab742c39e0d0e7726c7577a89e0332d7d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a06e7a37fefcc5e062ab70215ae739fdaaaf5c8779e0556a257db802b35b5ec
[INFO] running `Command { std: "docker" "start" "-a" "3a06e7a37fefcc5e062ab70215ae739fdaaaf5c8779e0556a257db802b35b5ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking graphviz_dot_builder v0.1.2
[INFO] [stderr]     Checking autour_core v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfa/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfait/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfa/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/nfait/implem/access.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nfa/implem/build.rs:77:15
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn repeat(mut self, num : usize) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nfa/implem/build.rs:77:15
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn repeat(mut self, num : usize) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/states_map.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (row_id, row) in self.matrix_map_to_nfa_states.iter().enumerate() {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/states_map.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (row_id, row) in self.matrix_map_to_nfa_states.iter().enumerate() {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dfa`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:14
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_dfa`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sm`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:18
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |                  ^^ help: if this is intentional, prefix it with an underscore: `_sm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rsm`
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:258:21
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let (dfa,sm,rsm,legit) = kameda_weiner_algorithm(&nfa);
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_rsm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hide_alphabet`
[INFO] [stdout]   --> src/nfait/implem/letter.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn hide_letters(self, hide_alphabet : bool, should_hide: &dyn Fn(&Letter) -> bool) -> Self {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hide_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hide_alphabet`
[INFO] [stdout]   --> src/nfait/implem/letter.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn hide_letters(self, hide_alphabet : bool, should_hide: &dyn Fn(&Letter) -> bool) -> Self {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hide_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/access.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn make_accessible(mut self) -> Self {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn unite(mut self, other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |              ----^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn concatenate(mut self, mut other: Self) -> Result<Self,AutError<Letter>> {
[INFO] [stdout]    |                              ----^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn repeat(self, num : usize) -> Self {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn kleene(mut self) -> Self {
[INFO] [stdout]    |               ----^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gnfa/implem/build.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn at_most(mut self, num: usize) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn at_least(self, num: usize) -> Self {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/gnfa/implem/build.rs:50:50
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn repeat_range<R: RangeBounds<usize>>(self, r: R) -> Self {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_alphabet`
[INFO] [stdout]   --> src/gnfa/implem/letter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 | ...                   new_alphabet: HashSet<Letter>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_states`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                       active_states: &HashSet<usize>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `letter`
[INFO] [stdout]   --> src/gnfa/implem/run.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                       letter: &Letter) ->  Result<HashSet<usize>,AutError<Letter>> {
[INFO] [stdout]    |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_letter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_alphabet`
[INFO] [stdout]   --> src/gnfa/implem/letter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 | ...                   new_alphabet: HashSet<Letter>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_alphabet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_term`
[INFO] [stdout]   --> src/bre/term.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |             TermBRE::Kleene(sub_term) => false
[INFO] [stdout]    |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_term`
[INFO] [stdout]   --> src/bre/term.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |             TermBRE::Kleene(sub_term) => false
[INFO] [stdout]    |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_WILDCARD_HASHTAG` is never used
[INFO] [stdout]   --> src/printers/commons.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const SYNTAX_WILDCARD_HASHTAG : &str = "#";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SYNTAX_CONCATENATION_DOT` is never used
[INFO] [stdout]   --> src/printers/commons.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub const SYNTAX_CONCATENATION_DOT : &str = ".";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | /     orig_graph.print_dot(parent_folder,
[INFO] [stdout] 139 | |                          "orig",
[INFO] [stdout] 140 | |                          &GraphVizOutputFormat::png);
[INFO] [stdout]     | |____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let _ = orig_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | /     sm_graph.print_dot(parent_folder,
[INFO] [stdout] 142 | |                        "sm",
[INFO] [stdout] 143 | |                        &GraphVizOutputFormat::png);
[INFO] [stdout]     | |__________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let _ = sm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 | /     rsm_graph.print_dot(parent_folder,
[INFO] [stdout] 145 | |                         "rsm",
[INFO] [stdout] 146 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = rsm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 | /     min_graph.print_dot(parent_folder,
[INFO] [stdout] 148 | |                         "min",
[INFO] [stdout] 149 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let _ = min_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | /     bridge_graph.print_dot(&parent_folder,
[INFO] [stdout] 202 | |                            &name,
[INFO] [stdout] 203 | |                            &GraphVizOutputFormat::svg);
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let _ = bridge_graph.print_dot(&parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | /     orig_graph.print_dot(parent_folder,
[INFO] [stdout] 139 | |                          "orig",
[INFO] [stdout] 140 | |                          &GraphVizOutputFormat::png);
[INFO] [stdout]     | |____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let _ = orig_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | /     sm_graph.print_dot(parent_folder,
[INFO] [stdout] 142 | |                        "sm",
[INFO] [stdout] 143 | |                        &GraphVizOutputFormat::png);
[INFO] [stdout]     | |__________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let _ = sm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 | /     rsm_graph.print_dot(parent_folder,
[INFO] [stdout] 145 | |                         "rsm",
[INFO] [stdout] 146 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = rsm_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 | /     min_graph.print_dot(parent_folder,
[INFO] [stdout] 148 | |                         "min",
[INFO] [stdout] 149 | |                         &GraphVizOutputFormat::png);
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |     let _ = min_graph.print_dot(parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/nfa/algos/kameda_weiner/algo.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | /     bridge_graph.print_dot(&parent_folder,
[INFO] [stdout] 202 | |                            &name,
[INFO] [stdout] 203 | |                            &GraphVizOutputFormat::svg);
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |     let _ = bridge_graph.print_dot(&parent_folder,
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/bre/term.rs:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let _ = sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/bre/term.rs:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let _ = sub2.into_iter().map(|t| sub1.insert(t));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "3a06e7a37fefcc5e062ab70215ae739fdaaaf5c8779e0556a257db802b35b5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a06e7a37fefcc5e062ab70215ae739fdaaaf5c8779e0556a257db802b35b5ec", kill_on_drop: false }`
[INFO] [stdout] 3a06e7a37fefcc5e062ab70215ae739fdaaaf5c8779e0556a257db802b35b5ec
