Dec 19 12:05:36.699 INFO checking naens/parse-exs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:05:36.699 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/naens/parse-exs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:05:37.290 INFO [stdout] 29d7a31f050f372294ea4bd49c2029e0072cc889d192e909dd3a4b730ee3b093
Dec 19 12:05:37.296 INFO running `"docker" "start" "-a" "29d7a31f050f372294ea4bd49c2029e0072cc889d192e909dd3a4b730ee3b093"`
Dec 19 12:05:39.493 INFO [stderr]     Checking parse-exs v0.1.0 (/opt/crater/workdir)
Dec 19 12:05:39.912 INFO [stderr] warning: unused variable: `op`
Dec 19 12:05:39.912 INFO [stderr]   --> src/regex.rs:57:12
Dec 19 12:05:39.912 INFO [stderr]    |
Dec 19 12:05:39.912 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:39.912 INFO [stderr]    |            ^^ help: consider using `_op` instead
Dec 19 12:05:39.912 INFO [stderr]    |
Dec 19 12:05:39.912 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:05:39.912 INFO [stderr] 
Dec 19 12:05:39.912 INFO [stderr] warning: unused variable: `se`
Dec 19 12:05:39.912 INFO [stderr]   --> src/regex.rs:57:31
Dec 19 12:05:39.912 INFO [stderr]    |
Dec 19 12:05:39.912 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:39.912 INFO [stderr]    |                               ^^ help: consider using `_se` instead
Dec 19 12:05:39.912 INFO [stderr] 
Dec 19 12:05:39.940 INFO [stderr] warning: unused variable: `op`
Dec 19 12:05:39.940 INFO [stderr]   --> src/regex.rs:57:12
Dec 19 12:05:39.940 INFO [stderr]    |
Dec 19 12:05:39.940 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:39.940 INFO [stderr]    |            ^^ help: consider using `_op` instead
Dec 19 12:05:39.940 INFO [stderr]    |
Dec 19 12:05:39.940 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:05:39.940 INFO [stderr] 
Dec 19 12:05:39.940 INFO [stderr] warning: unused variable: `se`
Dec 19 12:05:39.941 INFO [stderr]   --> src/regex.rs:57:31
Dec 19 12:05:39.941 INFO [stderr]    |
Dec 19 12:05:39.941 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:39.941 INFO [stderr]    |                               ^^ help: consider using `_se` instead
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Not`
Dec 19 12:05:39.941 INFO [stderr]  --> src/regex.rs:5:5
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr] 5 |     Not(Box<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Plus`
Dec 19 12:05:39.941 INFO [stderr]  --> src/regex.rs:6:5
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr] 6 |     Plus(Box<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Star`
Dec 19 12:05:39.941 INFO [stderr]  --> src/regex.rs:7:5
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr] 7 |     Star(Box<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Option`
Dec 19 12:05:39.941 INFO [stderr]  --> src/regex.rs:8:5
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr] 8 |     Option(Box<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Concat`
Dec 19 12:05:39.941 INFO [stderr]  --> src/regex.rs:9:5
Dec 19 12:05:39.941 INFO [stderr]   |
Dec 19 12:05:39.941 INFO [stderr] 9 |     Concat(Vec<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `And`
Dec 19 12:05:39.941 INFO [stderr]   --> src/regex.rs:10:5
Dec 19 12:05:39.941 INFO [stderr]    |
Dec 19 12:05:39.941 INFO [stderr] 10 |     And(BTreeSet<SubElement>),
Dec 19 12:05:39.941 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.941 INFO [stderr] warning: variant is never constructed: `Or`
Dec 19 12:05:39.941 INFO [stderr]   --> src/regex.rs:11:5
Dec 19 12:05:39.941 INFO [stderr]    |
Dec 19 12:05:39.941 INFO [stderr] 11 |     Or(BTreeSet<SubElement>)
Dec 19 12:05:39.941 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.941 INFO [stderr] 
Dec 19 12:05:39.948 INFO [stderr] warning: variant is never constructed: `Operator`
Dec 19 12:05:39.948 INFO [stderr]   --> src/regex.rs:22:5
Dec 19 12:05:39.948 INFO [stderr]    |
Dec 19 12:05:39.948 INFO [stderr] 22 |     Operator(Operator),
Dec 19 12:05:39.948 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.948 INFO [stderr] 
Dec 19 12:05:39.948 INFO [stderr] warning: variant is never constructed: `SymbolRange`
Dec 19 12:05:39.948 INFO [stderr]   --> src/regex.rs:23:5
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 23 |     SymbolRange(SymbolRange),
Dec 19 12:05:39.949 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: variant is never constructed: `String`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:24:5
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 24 |     String(Vec<char>)
Dec 19 12:05:39.949 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_not`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:27:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 27 | pub fn make_not(se: SubElement) -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_plus`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:31:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 31 | pub fn make_plus(se: SubElement) -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_star`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:35:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 35 | pub fn make_star(se: SubElement) -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_option`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:39:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 39 | pub fn make_option(se: SubElement) -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_concat`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:43:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 43 | pub fn make_concat() -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_and`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:47:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 47 | pub fn make_and() -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `make_or`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:51:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 51 | pub fn make_or() -> Operator {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: function is never used: `sim_add`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:57:1
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:39.949 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.949 INFO [stderr] warning: method is never used: `add`
Dec 19 12:05:39.949 INFO [stderr]   --> src/regex.rs:63:5
Dec 19 12:05:39.949 INFO [stderr]    |
Dec 19 12:05:39.949 INFO [stderr] 63 |     pub fn add(&mut self, se: SubElement) {
Dec 19 12:05:39.949 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.949 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Not`
Dec 19 12:05:39.998 INFO [stderr]  --> src/regex.rs:5:5
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr] 5 |     Not(Box<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Plus`
Dec 19 12:05:39.998 INFO [stderr]  --> src/regex.rs:6:5
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr] 6 |     Plus(Box<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Star`
Dec 19 12:05:39.998 INFO [stderr]  --> src/regex.rs:7:5
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr] 7 |     Star(Box<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Option`
Dec 19 12:05:39.998 INFO [stderr]  --> src/regex.rs:8:5
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr] 8 |     Option(Box<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Concat`
Dec 19 12:05:39.998 INFO [stderr]  --> src/regex.rs:9:5
Dec 19 12:05:39.998 INFO [stderr]   |
Dec 19 12:05:39.998 INFO [stderr] 9 |     Concat(Vec<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `And`
Dec 19 12:05:39.998 INFO [stderr]   --> src/regex.rs:10:5
Dec 19 12:05:39.998 INFO [stderr]    |
Dec 19 12:05:39.998 INFO [stderr] 10 |     And(BTreeSet<SubElement>),
Dec 19 12:05:39.998 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Or`
Dec 19 12:05:39.998 INFO [stderr]   --> src/regex.rs:11:5
Dec 19 12:05:39.998 INFO [stderr]    |
Dec 19 12:05:39.998 INFO [stderr] 11 |     Or(BTreeSet<SubElement>)
Dec 19 12:05:39.998 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `Operator`
Dec 19 12:05:39.998 INFO [stderr]   --> src/regex.rs:22:5
Dec 19 12:05:39.998 INFO [stderr]    |
Dec 19 12:05:39.998 INFO [stderr] 22 |     Operator(Operator),
Dec 19 12:05:39.998 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:05:39.998 INFO [stderr] 
Dec 19 12:05:39.998 INFO [stderr] warning: variant is never constructed: `SymbolRange`
Dec 19 12:05:39.998 INFO [stderr]   --> src/regex.rs:23:5
Dec 19 12:05:39.998 INFO [stderr]    |
Dec 19 12:05:39.998 INFO [stderr] 23 |     SymbolRange(SymbolRange),
Dec 19 12:05:39.998 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.004 INFO [stderr] 
Dec 19 12:05:40.004 INFO [stderr] warning: variant is never constructed: `String`
Dec 19 12:05:40.004 INFO [stderr]   --> src/regex.rs:24:5
Dec 19 12:05:40.004 INFO [stderr]    |
Dec 19 12:05:40.004 INFO [stderr] 24 |     String(Vec<char>)
Dec 19 12:05:40.004 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.004 INFO [stderr] 
Dec 19 12:05:40.004 INFO [stderr] warning: function is never used: `make_not`
Dec 19 12:05:40.004 INFO [stderr]   --> src/regex.rs:27:1
Dec 19 12:05:40.004 INFO [stderr]    |
Dec 19 12:05:40.004 INFO [stderr] 27 | pub fn make_not(se: SubElement) -> Operator {
Dec 19 12:05:40.004 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_plus`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:31:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 31 | pub fn make_plus(se: SubElement) -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_star`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:35:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 35 | pub fn make_star(se: SubElement) -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_option`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:39:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 39 | pub fn make_option(se: SubElement) -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_concat`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:43:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 43 | pub fn make_concat() -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_and`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:47:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 47 | pub fn make_and() -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `make_or`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:51:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 51 | pub fn make_or() -> Operator {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: function is never used: `sim_add`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:57:1
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
Dec 19 12:05:40.005 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.005 INFO [stderr] warning: method is never used: `add`
Dec 19 12:05:40.005 INFO [stderr]   --> src/regex.rs:63:5
Dec 19 12:05:40.005 INFO [stderr]    |
Dec 19 12:05:40.005 INFO [stderr] 63 |     pub fn add(&mut self, se: SubElement) {
Dec 19 12:05:40.005 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:05:40.005 INFO [stderr] 
Dec 19 12:05:40.345 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Dec 19 12:05:41.188 INFO running `"docker" "inspect" "29d7a31f050f372294ea4bd49c2029e0072cc889d192e909dd3a4b730ee3b093"`
Dec 19 12:05:41.504 INFO running `"docker" "rm" "-f" "29d7a31f050f372294ea4bd49c2029e0072cc889d192e909dd3a4b730ee3b093"`
Dec 19 12:05:41.838 INFO [stdout] 29d7a31f050f372294ea4bd49c2029e0072cc889d192e909dd3a4b730ee3b093