[INFO] updating cached repository thecreamedcorn/peg_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/thecreamedcorn/peg_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/thecreamedcorn/peg_rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/thecreamedcorn/peg_rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thecreamedcorn/peg_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thecreamedcorn/peg_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 446114320b5baa4cb9ebcab14215fb3871a8ed76
[INFO] sha for GitHub repo thecreamedcorn/peg_rs: 446114320b5baa4cb9ebcab14215fb3871a8ed76
[INFO] validating manifest of thecreamedcorn/peg_rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thecreamedcorn/peg_rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing thecreamedcorn/peg_rs
[INFO] finished frobbing thecreamedcorn/peg_rs
[INFO] frobbed toml for thecreamedcorn/peg_rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs/Cargo.toml
[INFO] started frobbing thecreamedcorn/peg_rs
[INFO] finished frobbing thecreamedcorn/peg_rs
[INFO] frobbed toml for thecreamedcorn/peg_rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thecreamedcorn/peg_rs/Cargo.toml
[INFO] crate thecreamedcorn/peg_rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing thecreamedcorn/peg_rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] dacfca3811b871ea0d5b03a10ccca8b1e48a72232882b2a07787d7e95b23f6d0
[INFO] running `"docker" "start" "-a" "dacfca3811b871ea0d5b03a10ccca8b1e48a72232882b2a07787d7e95b23f6d0"`
[INFO] [stderr]    Compiling peg_rs v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/and.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(child: Box<Buildable>) -> Box<Buildable> {
[INFO] [stderr]   |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/and.rs:7:46
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(child: Box<Buildable>) -> Box<Buildable> {
[INFO] [stderr]   |                                              ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/anything.rs:23:130
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/capture.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:12:16
[INFO] [stderr]    |
[INFO] [stderr] 12 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:55:39
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn new(name: &str, child: Box<Buildable>) -> Box<Capture> {
[INFO] [stderr]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:64:128
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/char_class.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 | type CharTester = Fn(char) -> bool;
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/char_class.rs:37:130
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/choice.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub choices: Vec<Box<GrammarNode>>,
[INFO] [stderr]   |                          ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/choice.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     choices: Vec<Box<Buildable>>
[INFO] [stderr]   |                      ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(choices: Vec<Box<Buildable>>) -> Box<Choice> {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:31:128
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/not.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/not.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/not.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<Not> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/not.rs:32:128
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/one_or_more.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 |     child: Box<GrammarNode>,
[INFO] [stderr]   |                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:14:27
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(child: Box<Buildable>) -> Box<OneOrMore> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:52:128
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/production.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub child: Box<GrammarNode>
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub child: Box<Buildable>
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production.rs:34:39
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn new(name: &str, child: Box<Buildable>) -> Production {
[INFO] [stderr]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production_ref.rs:29:128
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/sem_act.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub func: Rc<Fn(&CaptureTree)>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:15:14
[INFO] [stderr]    |
[INFO] [stderr] 15 |     func: Rc<Fn(&CaptureTree)>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(child: Box<Buildable>, func: Rc<Fn(&CaptureTree)>) -> Box<SemAct> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:19:48
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(child: Box<Buildable>, func: Rc<Fn(&CaptureTree)>) -> Box<SemAct> {
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:72:128
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/str_lit.rs:49:130
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/union.rs:6:22
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub seq: Vec<Box<GrammarNode>>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 |     seq: Vec<Box<Buildable>>
[INFO] [stderr]    |                  ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:14:29
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(seq: Vec<Box<Buildable>>) -> Box<Union> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:43:128
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_more.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 |     child: Box<GrammarNode>,
[INFO] [stderr]   |                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_more.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_more.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<ZeroOrMore> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_more.rs:43:128
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_one.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_one.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_one.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<ZeroOrOne> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_one.rs:28:128
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/utils/parse_result.rs:8:28
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub call_list: Vec<(Rc<Fn(&CaptureTree)>, Rc<CaptureTree>)>,
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/interfaces/buildable.rs:9:128
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String>;
[INFO] [stderr]   |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:22:38
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 ParseResult::Success(mut parse_data) => return ParseResult::Success(parse_data),
[INFO] [stderr]    |                                      ----^^^^^^^^^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "dacfca3811b871ea0d5b03a10ccca8b1e48a72232882b2a07787d7e95b23f6d0"`
[INFO] running `"docker" "rm" "-f" "dacfca3811b871ea0d5b03a10ccca8b1e48a72232882b2a07787d7e95b23f6d0"`
[INFO] [stdout] dacfca3811b871ea0d5b03a10ccca8b1e48a72232882b2a07787d7e95b23f6d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d77971a8fa43cd7a505692f24b5ce6bc0ae0cfde6079cecfdc9bd4ddeb446cf9
[INFO] running `"docker" "start" "-a" "d77971a8fa43cd7a505692f24b5ce6bc0ae0cfde6079cecfdc9bd4ddeb446cf9"`
[INFO] [stderr]    Compiling peg_rs v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/and.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(child: Box<Buildable>) -> Box<Buildable> {
[INFO] [stderr]   |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/and.rs:7:46
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(child: Box<Buildable>) -> Box<Buildable> {
[INFO] [stderr]   |                                              ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/anything.rs:23:130
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/capture.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:12:16
[INFO] [stderr]    |
[INFO] [stderr] 12 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:55:39
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn new(name: &str, child: Box<Buildable>) -> Box<Capture> {
[INFO] [stderr]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/capture.rs:64:128
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/char_class.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 | type CharTester = Fn(char) -> bool;
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/char_class.rs:37:130
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/choice.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub choices: Vec<Box<GrammarNode>>,
[INFO] [stderr]   |                          ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/choice.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     choices: Vec<Box<Buildable>>
[INFO] [stderr]   |                      ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(choices: Vec<Box<Buildable>>) -> Box<Choice> {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:31:128
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/not.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/not.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/not.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<Not> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/not.rs:32:128
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/one_or_more.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 |     child: Box<GrammarNode>,
[INFO] [stderr]   |                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:14:27
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(child: Box<Buildable>) -> Box<OneOrMore> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/one_or_more.rs:52:128
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/production.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub child: Box<GrammarNode>
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub child: Box<Buildable>
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production.rs:34:39
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn new(name: &str, child: Box<Buildable>) -> Production {
[INFO] [stderr]    |                                       ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/production_ref.rs:29:128
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/sem_act.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub func: Rc<Fn(&CaptureTree)>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     child: Box<Buildable>,
[INFO] [stderr]    |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:15:14
[INFO] [stderr]    |
[INFO] [stderr] 15 |     func: Rc<Fn(&CaptureTree)>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(child: Box<Buildable>, func: Rc<Fn(&CaptureTree)>) -> Box<SemAct> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:19:48
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(child: Box<Buildable>, func: Rc<Fn(&CaptureTree)>) -> Box<SemAct> {
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/sem_act.rs:72:128
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/str_lit.rs:49:130
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn build(&self, _map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, _prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/union.rs:6:22
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub seq: Vec<Box<GrammarNode>>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 |     seq: Vec<Box<Buildable>>
[INFO] [stderr]    |                  ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:14:29
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(seq: Vec<Box<Buildable>>) -> Box<Union> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/union.rs:43:128
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_more.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 |     child: Box<GrammarNode>,
[INFO] [stderr]   |                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_more.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_more.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<ZeroOrMore> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_more.rs:43:128
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_one.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub child: Box<GrammarNode>,
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/grammar_nodes/zero_or_one.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     child: Box<Buildable>,
[INFO] [stderr]   |                ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_one.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(child: Box<Buildable>) -> Box<ZeroOrOne> {
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn Buildable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/zero_or_one.rs:28:128
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String> {
[INFO] [stderr]    |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/utils/parse_result.rs:8:28
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub call_list: Vec<(Rc<Fn(&CaptureTree)>, Rc<CaptureTree>)>,
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&CaptureTree)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/peg_rs/interfaces/buildable.rs:9:128
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn build(&self, map: &mut HashMap<String, Rc<RefCell<ProductionNode>>>, prods: &HashMap<String, Production>) -> Result<Box<GrammarNode>, String>;
[INFO] [stderr]   |                                                                                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn GrammarNode`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/peg_rs/grammar_nodes/char_class.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 |     let num: Rc<RefCell<i64>> = Rc::new(RefCell::new(5));
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_num`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:22:38
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 ParseResult::Success(mut parse_data) => return ParseResult::Success(parse_data),
[INFO] [stderr]    |                                      ----^^^^^^^^^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "d77971a8fa43cd7a505692f24b5ce6bc0ae0cfde6079cecfdc9bd4ddeb446cf9"`
[INFO] running `"docker" "rm" "-f" "d77971a8fa43cd7a505692f24b5ce6bc0ae0cfde6079cecfdc9bd4ddeb446cf9"`
[INFO] [stdout] d77971a8fa43cd7a505692f24b5ce6bc0ae0cfde6079cecfdc9bd4ddeb446cf9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/thecreamedcorn/peg_rs:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8f694b6de67b5fba99827ef4915d681303dbab46afe47eb6cde6cfc4f5014de5
[INFO] running `"docker" "start" "-a" "8f694b6de67b5fba99827ef4915d681303dbab46afe47eb6cde6cfc4f5014de5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/peg_rs-e878e6c16172e324
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test peg_rs::grammar_nodes::and::test_and ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::capture::test_capture ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::char_class::test_char_class ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::production::test_production ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::one_or_more::test_one_or_more ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::sem_act::test_semantic_actions ... ok
[INFO] [stdout] test peg_rs::calculator_test ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::choice::test_choice ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::not::test_not ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::str_lit::test_str_lit ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::union::test_union ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::zero_or_more::test_zero_or_more ... ok
[INFO] [stdout] test peg_rs::grammar_nodes::zero_or_one::test_zero_or_one ... ok
[INFO] [stdout] test peg_rs::utils::parsable::test_parsable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests peg_rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8f694b6de67b5fba99827ef4915d681303dbab46afe47eb6cde6cfc4f5014de5"`
[INFO] running `"docker" "rm" "-f" "8f694b6de67b5fba99827ef4915d681303dbab46afe47eb6cde6cfc4f5014de5"`
[INFO] [stdout] 8f694b6de67b5fba99827ef4915d681303dbab46afe47eb6cde6cfc4f5014de5