[INFO] updating cached repository https://github.com/strout/worthy-opponent
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 6b5ca0410ab62a200ca90420c8a5537d38f6b41d
[INFO] checking strout/worthy-opponent against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrout%2Fworthy-opponent" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strout/worthy-opponent on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/strout/worthy-opponent
[INFO] finished tweaking git repo https://github.com/strout/worthy-opponent
[INFO] tweaked toml for git repo https://github.com/strout/worthy-opponent written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/strout/worthy-opponent already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0d75430938478d1e6bd6d95a17fd43907cb1c21944a967431386caf4e041d20e
[INFO] running `"docker" "start" "-a" "0d75430938478d1e6bd6d95a17fd43907cb1c21944a967431386caf4e041d20e"`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]     Checking ascii v0.8.7
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.34
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking rand_os v0.1.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking criterion-stats v0.3.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking tiny_http v0.6.1
[INFO] [stderr]     Checking worthy-opponent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |             try!(write!(fmt, "("));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:254:31
[INFO] [stderr]     |
[INFO] [stderr] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:362:13
[INFO] [stderr]     |
[INFO] [stderr] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:364:17
[INFO] [stderr]     |
[INFO] [stderr] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:25:24
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         try!(','.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         try!(self.to.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         try!(','.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:371:95
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Vec<Thing<'b>>> + 'a`
[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/ggp.rs:375:71
[INFO] [stderr]     |
[INFO] [stderr] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:384:89
[INFO] [stderr]     |
[INFO] [stderr] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stderr]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Fact<'b>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:385:46
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:510:56
[INFO] [stderr]     |
[INFO] [stderr] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=IExpr> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:521:74
[INFO] [stderr]     |
[INFO] [stderr] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Assignments> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:529:118
[INFO] [stderr]     |
[INFO] [stderr] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]  --> src/connectfour.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem::uninitialized;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/connectfour.rs:16:75
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/ggp.rs:214:19
[INFO] [stderr]     |
[INFO] [stderr] 214 |     let mut s = s.trim_left();
[INFO] [stderr]     |                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/ggp.rs:216:51
[INFO] [stderr]     |
[INFO] [stderr] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stderr]     |                                                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr]     Checking handlebars v1.0.5
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking criterion-plot v0.2.7
[INFO] [stderr]     Checking criterion v0.2.7
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |             try!(write!(fmt, "("));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ggp.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:254:31
[INFO] [stderr]     |
[INFO] [stderr] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:362:13
[INFO] [stderr]     |
[INFO] [stderr] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ggp.rs:364:17
[INFO] [stderr]     |
[INFO] [stderr] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:25:24
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         try!(','.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         try!(self.to.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ninemensmorris.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         try!(','.fmt(formatter));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/basics.rs:120:36
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn shrink(self: &Space) -> Box<Iterator<Item=Space>> {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Space>`
[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/ggp.rs:371:95
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Vec<Thing<'b>>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:375:71
[INFO] [stderr]     |
[INFO] [stderr] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:384:89
[INFO] [stderr]     |
[INFO] [stderr] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stderr]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Fact<'b>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:385:46
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:510:56
[INFO] [stderr]     |
[INFO] [stderr] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=IExpr> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:521:74
[INFO] [stderr]     |
[INFO] [stderr] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Assignments> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ggp.rs:529:118
[INFO] [stderr]     |
[INFO] [stderr] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]  --> src/connectfour.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem::uninitialized;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/connectfour.rs:16:75
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/ggp.rs:214:19
[INFO] [stderr]     |
[INFO] [stderr] 214 |     let mut s = s.trim_left();
[INFO] [stderr]     |                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/ggp.rs:216:51
[INFO] [stderr]     |
[INFO] [stderr] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stderr]     |                                                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `SliceRandom` is imported redundantly
[INFO] [stderr]    --> benches/benchmarks.rs:169:16
[INFO] [stderr]     |
[INFO] [stderr] 6   | use ::rand::{Rng, FromEntropy, rngs::SmallRng, distributions::Standard, seq::SliceRandom};
[INFO] [stderr]     |                                                                         ---------------- the item `SliceRandom` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 169 |     use rand::{seq::SliceRandom, FromEntropy, rngs::SmallRng};
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `FromEntropy` is imported redundantly
[INFO] [stderr]    --> benches/benchmarks.rs:169:34
[INFO] [stderr]     |
[INFO] [stderr] 6   | use ::rand::{Rng, FromEntropy, rngs::SmallRng, distributions::Standard, seq::SliceRandom};
[INFO] [stderr]     |                   ----------- the item `FromEntropy` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 169 |     use rand::{seq::SliceRandom, FromEntropy, rngs::SmallRng};
[INFO] [stderr]     |                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `SmallRng` is imported redundantly
[INFO] [stderr]    --> benches/benchmarks.rs:169:47
[INFO] [stderr]     |
[INFO] [stderr] 6   | use ::rand::{Rng, FromEntropy, rngs::SmallRng, distributions::Standard, seq::SliceRandom};
[INFO] [stderr]     |                                -------------- the item `SmallRng` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 169 |     use rand::{seq::SliceRandom, FromEntropy, rngs::SmallRng};
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `"docker" "inspect" "0d75430938478d1e6bd6d95a17fd43907cb1c21944a967431386caf4e041d20e"`
[INFO] running `"docker" "rm" "-f" "0d75430938478d1e6bd6d95a17fd43907cb1c21944a967431386caf4e041d20e"`
[INFO] [stdout] 0d75430938478d1e6bd6d95a17fd43907cb1c21944a967431386caf4e041d20e