[INFO] updating cached repository https://github.com/remexre/datalog
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 58da741a50543d581c6f29a5a56dac7b90dec907
[INFO] checking remexre/datalog against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremexre%2Fdatalog" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/remexre/datalog on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/remexre/datalog
[INFO] finished tweaking git repo https://github.com/remexre/datalog
[INFO] tweaked toml for git repo https://github.com/remexre/datalog written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/remexre/datalog already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a8dbae031ba4a000971d232ba7bdf575f9759850d034989fecf9fb13cc968a44
[INFO] running `"docker" "start" "-a" "a8dbae031ba4a000971d232ba7bdf575f9759850d034989fecf9fb13cc968a44"`
[INFO] [stderr]     Checking bytecount v0.1.7
[INFO] [stderr]    Compiling pest v1.0.2
[INFO] [stderr]     Checking try_opt v0.1.1
[INFO] [stderr]     Checking itertools v0.7.6
[INFO] [stderr]     Checking symbol v0.1.1
[INFO] [stderr]     Checking clap v2.29.2
[INFO] [stderr]     Checking proptest v0.4.2
[INFO] [stderr]     Checking liner v0.4.4
[INFO] [stderr]    Compiling pest_derive v1.0.2
[INFO] [stderr] warning[E0503]: cannot use `self.key_bindings` because it was mutably borrowed
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/liner-0.4.4/src/context.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 96 |             let ed = try!(Editor::new_with_init_buffer(stdout, prompt, self, buffer));
[INFO] [stderr]    |                                                                        ---- borrow of `*self` occurs here
[INFO] [stderr] 97 |             match self.key_bindings {
[INFO] [stderr] 98 |                 KeyBindings::Emacs => Self::handle_keys(keymap::Emacs::new(ed), handler),
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ use of borrowed `*self`
[INFO] [stderr] 99 |                 KeyBindings::Vi => Self::handle_keys(keymap::Vi::new(ed), handler),
[INFO] [stderr]    |                                                                      -- borrow later used here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]    = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking sparkly v0.1.4
[INFO] [stderr]     Checking datalog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[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/naive/mod.rs:36:14
[INFO] [stderr]    |
[INFO] [stderr] 36 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:52:14
[INFO] [stderr]    |
[INFO] [stderr] 52 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:69:14
[INFO] [stderr]    |
[INFO] [stderr] 69 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/naive/mod.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:58:14
[INFO] [stderr]    |
[INFO] [stderr] 58 |     ) -> Box<'a + Iterator<Item = Bindings>>;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |     ) -> Result<Box<'a + Iterator<Item = Bindings>>> {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:123:14
[INFO] [stderr]     |
[INFO] [stderr] 123 |     ) -> Box<'a + Iterator<Item = Bindings>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |     ) -> Result<Box<'a + Iterator<Item = Bindings>>> {
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / error_chain! {
[INFO] [stderr] 10 | |     errors {
[INFO] [stderr] 11 | |         NoSuchClause(clause: Clause) {
[INFO] [stderr] 12 | |             description("A non-existent clause was found")
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/ast/mod.rs:119:26
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let Clause(head, body) = self.clone();
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_body`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/ast/mod.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let Literal(name, mut hargs) = head;
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]  --> src/ast/eq.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn alpha_eq(&self, other: &Clause) -> bool {
[INFO] [stderr]   |                            ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lv`
[INFO] [stderr]   --> src/ast/pattern_match.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |             (Term::Var(lv), Term::Var(rv)) => {}
[INFO] [stderr]    |                        ^^ help: consider prefixing with an underscore: `_lv`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rv`
[INFO] [stderr]   --> src/ast/pattern_match.rs:32:39
[INFO] [stderr]    |
[INFO] [stderr] 32 |             (Term::Var(lv), Term::Var(rv)) => {}
[INFO] [stderr]    |                                       ^^ help: consider prefixing with an underscore: `_rv`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clause`
[INFO] [stderr]    --> src/naive/mod.rs:103:34
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn run_retraction(&mut self, clause: Clause) -> Result<()> {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_clause`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `entry_fn`
[INFO] [stderr]   --> src/util.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / pub fn entry_fn<F, K, V>(map: &mut HashMap<K, V>, key: K, f: F)
[INFO] [stderr] 8  | | where
[INFO] [stderr] 9  | |     F: FnOnce(&K, Option<V>) -> Option<V>,
[INFO] [stderr] 10 | |     K: Eq + Hash,
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[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/naive/mod.rs:36:14
[INFO] [stderr]    |
[INFO] [stderr] 36 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:52:14
[INFO] [stderr]    |
[INFO] [stderr] 52 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/naive/mod.rs:69:14
[INFO] [stderr]    |
[INFO] [stderr] 69 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/naive/mod.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |     ) -> Box<'a + Iterator<Item = BTreeMap<Variable, Name>>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = BTreeMap<Variable, Name>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:58:14
[INFO] [stderr]    |
[INFO] [stderr] 58 |     ) -> Box<'a + Iterator<Item = Bindings>>;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |     ) -> Result<Box<'a + Iterator<Item = Bindings>>> {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:123:14
[INFO] [stderr]     |
[INFO] [stderr] 123 |     ) -> Box<'a + Iterator<Item = Bindings>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |     ) -> Result<Box<'a + Iterator<Item = Bindings>>> {
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn 'a + Iterator<Item = Bindings>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/ast/name.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | / lazy_static!{
[INFO] [stderr] 55 | |     static ref NAME_REGEX: Regex = Regex::new("^[^A-Z_].*$").unwrap();
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/ast/variable.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | / lazy_static!{
[INFO] [stderr] 56 | |     static ref VARIABLE_REGEX: Regex = Regex::new("^[A-Z_][A-Za-z0-9_]*$").unwrap();
[INFO] [stderr] 57 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / error_chain! {
[INFO] [stderr] 10 | |     errors {
[INFO] [stderr] 11 | |         NoSuchClause(clause: Clause) {
[INFO] [stderr] 12 | |             description("A non-existent clause was found")
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     }
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/ast/mod.rs:119:26
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let Clause(head, body) = self.clone();
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_body`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/ast/mod.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let Literal(name, mut hargs) = head;
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]  --> src/ast/eq.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn alpha_eq(&self, other: &Clause) -> bool {
[INFO] [stderr]   |                            ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lv`
[INFO] [stderr]   --> src/ast/pattern_match.rs:32:24
[INFO] [stderr]    |
[INFO] [stderr] 32 |             (Term::Var(lv), Term::Var(rv)) => {}
[INFO] [stderr]    |                        ^^ help: consider prefixing with an underscore: `_lv`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rv`
[INFO] [stderr]   --> src/ast/pattern_match.rs:32:39
[INFO] [stderr]    |
[INFO] [stderr] 32 |             (Term::Var(lv), Term::Var(rv)) => {}
[INFO] [stderr]    |                                       ^^ help: consider prefixing with an underscore: `_rv`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clause`
[INFO] [stderr]    --> src/naive/mod.rs:103:34
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn run_retraction(&mut self, clause: Clause) -> Result<()> {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_clause`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `entry_fn`
[INFO] [stderr]   --> src/util.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / pub fn entry_fn<F, K, V>(map: &mut HashMap<K, V>, key: K, f: F)
[INFO] [stderr] 8  | | where
[INFO] [stderr] 9  | |     F: FnOnce(&K, Option<V>) -> Option<V>,
[INFO] [stderr] 10 | |     K: Eq + Hash,
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.85s
[INFO] running `"docker" "inspect" "a8dbae031ba4a000971d232ba7bdf575f9759850d034989fecf9fb13cc968a44"`
[INFO] running `"docker" "rm" "-f" "a8dbae031ba4a000971d232ba7bdf575f9759850d034989fecf9fb13cc968a44"`
[INFO] [stdout] a8dbae031ba4a000971d232ba7bdf575f9759850d034989fecf9fb13cc968a44