[INFO] cloning repository https://github.com/strout/worthy-opponent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strout/worthy-opponent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrout%2Fworthy-opponent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrout%2Fworthy-opponent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b3b0dcc7fbcb179cbb98e0a1e789c200c480147
[INFO] testing strout/worthy-opponent against master#2fe50cd72c476ebacdedb14893e9632b4de961c2 for pr-116088-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrout%2Fworthy-opponent" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strout/worthy-opponent on toolchain 2fe50cd72c476ebacdedb14893e9632b4de961c2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/strout/worthy-opponent already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4924c13fd8ad8bf942d6703ff8310fbec1e823a12774425087a4e80520575d48
[INFO] running `Command { std: "docker" "start" "-a" "4924c13fd8ad8bf942d6703ff8310fbec1e823a12774425087a4e80520575d48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4924c13fd8ad8bf942d6703ff8310fbec1e823a12774425087a4e80520575d48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4924c13fd8ad8bf942d6703ff8310fbec1e823a12774425087a4e80520575d48", kill_on_drop: false }`
[INFO] [stdout] 4924c13fd8ad8bf942d6703ff8310fbec1e823a12774425087a4e80520575d48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d12508cb45005a276e55c8f23503e7f067f9a1cc038879fe04c308e8c055caf5
[INFO] running `Command { std: "docker" "start" "-a" "d12508cb45005a276e55c8f23503e7f067f9a1cc038879fe04c308e8c055caf5", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.6
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[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
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[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling ascii v1.0.0
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling tiny_http v0.8.0
[INFO] [stderr]    Compiling worthy-opponent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.14s
[INFO] running `Command { std: "docker" "inspect" "d12508cb45005a276e55c8f23503e7f067f9a1cc038879fe04c308e8c055caf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d12508cb45005a276e55c8f23503e7f067f9a1cc038879fe04c308e8c055caf5", kill_on_drop: false }`
[INFO] [stdout] d12508cb45005a276e55c8f23503e7f067f9a1cc038879fe04c308e8c055caf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b28b049b673938d03df95222f7da14724d72627c947dc85d130f583299621075
[INFO] running `Command { std: "docker" "start" "-a" "b28b049b673938d03df95222f7da14724d72627c947dc85d130f583299621075", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling criterion-stats v0.3.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling quickcheck v0.7.2
[INFO] [stderr]    Compiling serde_json v1.0.34
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling handlebars v1.0.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling criterion-plot v0.2.7
[INFO] [stderr]    Compiling criterion v0.2.7
[INFO] [stderr]    Compiling worthy-opponent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/basics.rs:120:36
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn shrink(self: &Space) -> Box<Iterator<Item=Space>> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn shrink(self: &Space) -> Box<dyn Iterator<Item=Space>> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 46.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.7
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b28b049b673938d03df95222f7da14724d72627c947dc85d130f583299621075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b28b049b673938d03df95222f7da14724d72627c947dc85d130f583299621075", kill_on_drop: false }`
[INFO] [stdout] b28b049b673938d03df95222f7da14724d72627c947dc85d130f583299621075
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ba904fc8478e32c16e1550d95e5144fb8f0b7119ab1187b8c38cd7a97a2f12ed
[INFO] running `Command { std: "docker" "start" "-a" "ba904fc8478e32c16e1550d95e5144fb8f0b7119ab1187b8c38cd7a97a2f12ed", kill_on_drop: false }`
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/game.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stderr]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]  --> src/connectfour.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem::uninitialized;
[INFO] [stderr]   |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `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: 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]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               +++
[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]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stderr]     |                                                                                         +++
[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]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stderr]     |                                                        +++
[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]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stderr]     |                                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `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]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: replace the use of the deprecated method
[INFO] [stderr]     |
[INFO] [stderr] 214 |     let mut s = s.trim_start();
[INFO] [stderr]     |                   ~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `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]     |                                                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: replace the use of the deprecated method
[INFO] [stderr]     |
[INFO] [stderr] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stderr]     |                                                   ~~~~~~~~~~
[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]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stderr]     |                                                                       +++
[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]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stderr]     |                                              +++
[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 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                                                                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[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]    |                                                                           this code causes undefined behavior when executed
[INFO] [stderr]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stderr]   --> src/basics.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub enum Space { Empty, Black, White }
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/go.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]    |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]    |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/go.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                                 ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                    ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:123:32
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]     |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:136:32
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]     |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:151:25
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |                         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |                         ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |            ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:155:35
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                                   ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                      ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: `worthy-opponent` (lib) generated 34 warnings (run `cargo fix --lib -p worthy-opponent` to apply 16 suggestions)
[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]     |                                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn shrink(self: &Space) -> Box<dyn Iterator<Item=Space>> {
[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]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `worthy-opponent` (lib test) generated 35 warnings (33 duplicates) (run `cargo fix --lib -p worthy-opponent --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.7
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/worthy_opponent-0beeea16168863a4)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test ggp::tests::tic_tac_toe ... ok
[INFO] [stdout] test ggp::tests::preds ... ok
[INFO] [stdout] test ggp::tests::atoms ... ok
[INFO] [stdout] test ninemensmorris::tests::all_spaces_in_seen_by_four ... ok
[INFO] [stdout] test ninemensmorris::tests::adjacency_is_mutual ... ok
[INFO] [stdout] test basics::tests::history_present_iff_added ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 12.36s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/two-player.rs (/opt/rustwide/target/debug/deps/two_player-d971c8d4e1355703)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/worthy-opponent.rs (/opt/rustwide/target/debug/deps/worthy_opponent-02342fa2b01bf1c8)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests worthy-opponent
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ba904fc8478e32c16e1550d95e5144fb8f0b7119ab1187b8c38cd7a97a2f12ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba904fc8478e32c16e1550d95e5144fb8f0b7119ab1187b8c38cd7a97a2f12ed", kill_on_drop: false }`
[INFO] [stdout] ba904fc8478e32c16e1550d95e5144fb8f0b7119ab1187b8c38cd7a97a2f12ed
[INFO] testing strout/worthy-opponent against try#9c1665de5d324fe858dc15371578d6f928bfc123 for pr-116088-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrout%2Fworthy-opponent" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strout/worthy-opponent on toolchain 9c1665de5d324fe858dc15371578d6f928bfc123
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/strout/worthy-opponent already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 113ede163a22530a36bc0dd00b375ad41a3a8f48a8a36aec64e3ec3d823e1a92
[INFO] running `Command { std: "docker" "start" "-a" "113ede163a22530a36bc0dd00b375ad41a3a8f48a8a36aec64e3ec3d823e1a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "113ede163a22530a36bc0dd00b375ad41a3a8f48a8a36aec64e3ec3d823e1a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "113ede163a22530a36bc0dd00b375ad41a3a8f48a8a36aec64e3ec3d823e1a92", kill_on_drop: false }`
[INFO] [stdout] 113ede163a22530a36bc0dd00b375ad41a3a8f48a8a36aec64e3ec3d823e1a92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0c6b864883db1ecf632ae13c466ecdc6c8fd4f2bdeabdd70c4fe1ab07f5a205
[INFO] running `Command { std: "docker" "start" "-a" "f0c6b864883db1ecf632ae13c466ecdc6c8fd4f2bdeabdd70c4fe1ab07f5a205", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling ascii v1.0.0
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling tiny_http v0.8.0
[INFO] [stderr]    Compiling worthy-opponent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.50s
[INFO] running `Command { std: "docker" "inspect" "f0c6b864883db1ecf632ae13c466ecdc6c8fd4f2bdeabdd70c4fe1ab07f5a205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0c6b864883db1ecf632ae13c466ecdc6c8fd4f2bdeabdd70c4fe1ab07f5a205", kill_on_drop: false }`
[INFO] [stdout] f0c6b864883db1ecf632ae13c466ecdc6c8fd4f2bdeabdd70c4fe1ab07f5a205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f517da979d0f27c36f872300009cf0ee2b8986501d8a78cbf3a748b3d6f3ec6d
[INFO] running `Command { std: "docker" "start" "-a" "f517da979d0f27c36f872300009cf0ee2b8986501d8a78cbf3a748b3d6f3ec6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling criterion-stats v0.3.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_json v1.0.34
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling quickcheck v0.7.2
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[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling criterion-plot v0.2.7
[INFO] [stderr]    Compiling criterion v0.2.7
[INFO] [stderr]    Compiling worthy-opponent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/game.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     try!(write!(fmt, "({}", name));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             try!(write!(fmt, "("));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write_interned(fmt, self.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ggp.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 try!(write!(fmt, " {}", arg));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:254:31
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let (arg, next) = try!(parse_sexpr(rest));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             try!(write!(fmt, "(<= {}", self.head));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/ggp.rs:364:17
[INFO] [stdout]     |
[INFO] [stdout] 364 |                 try!(write!(fmt, " {}", p));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let t: usize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let r: isize = try!(ss.next().and_then(|s| s.parse().ok()).ok_or(()));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.from.map(|x| x as isize).unwrap_or(-1).fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         try!(self.to.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/ninemensmorris.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(','.fmt(formatter));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/connectfour.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::uninitialized;
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/basics.rs:120:36
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn shrink(self: &Space) -> Box<Iterator<Item=Space>> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn shrink(self: &Space) -> Box<dyn Iterator<Item=Space>> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:371:95
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:384:89
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stdout]     |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:510:56
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:521:74
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:214:19
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_left();
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 214 |     let mut s = s.trim_start();
[INFO] [stdout]     |                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]    --> src/ggp.rs:216:51
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_left();
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stdout]     |                                                   ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:375:71
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:385:46
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<Iterator<Item=_>>;
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ggp.rs:529:118
[INFO] [stdout]     |
[INFO] [stdout] 529 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stdout]     |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> src/connectfour.rs:16:75
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut b = unsafe /* hold on to your hat, 'cause here we go */ { uninitialized::<[Space; WIDTH * HEIGHT]>() };
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                           |
[INFO] [stdout]    |                                                                           this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stdout]   --> src/basics.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub enum Space { Empty, Black, White }
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]    |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]    |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/go.rs:60:33
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                                 ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stdout]    |                    ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:123:32
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stdout]     |                                ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stdout]     |                   ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:151:25
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |                         ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stdout]     |            ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/go.rs:155:35
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                                   ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stdout]     |                      ++++++++++++++++++++++++            ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 40.77s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.7
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f517da979d0f27c36f872300009cf0ee2b8986501d8a78cbf3a748b3d6f3ec6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f517da979d0f27c36f872300009cf0ee2b8986501d8a78cbf3a748b3d6f3ec6d", kill_on_drop: false }`
[INFO] [stdout] f517da979d0f27c36f872300009cf0ee2b8986501d8a78cbf3a748b3d6f3ec6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a5877ada7fd4ec0ef4e4dbff11809f5bae6e8093d29908772521a613ac438d6
[INFO] running `Command { std: "docker" "start" "-a" "2a5877ada7fd4ec0ef4e4dbff11809f5bae6e8093d29908772521a613ac438d6", kill_on_drop: false }`
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/game.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn play(&mut self, &Self::Move);
[INFO] [stderr]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Move`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]  --> src/connectfour.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem::uninitialized;
[INFO] [stderr]   |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `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: 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]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               +++
[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]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 384 | fn add_args<'a, 'b, I: Iterator<Item=&'a Expr<'b>>>(head: &'a Expr<'b>, from: I) -> Box<dyn Iterator<Item=Fact<'b>> + 'a> {
[INFO] [stderr]     |                                                                                         +++
[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]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 510 |     pub fn query<'b>(&'b self, expr: &'b IExpr) -> Box<dyn Iterator<Item=IExpr> + 'b> {
[INFO] [stderr]     |                                                        +++
[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]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 521 |     fn query_inner<'b>(&'b self, expr: ValExpr, asg: Assignments) -> Box<dyn Iterator<Item=Assignments> + 'b> {
[INFO] [stderr]     |                                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `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]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: replace the use of the deprecated method
[INFO] [stderr]     |
[INFO] [stderr] 214 |     let mut s = s.trim_start();
[INFO] [stderr]     |                   ~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `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]     |                                                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: replace the use of the deprecated method
[INFO] [stderr]     |
[INFO] [stderr] 216 |         s = &s[s.find('\n').unwrap_or(s.len())..].trim_start();
[INFO] [stderr]     |                                                   ~~~~~~~~~~
[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]     |                                                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 375 |             "and" => Box::new(args.iter().fold(Box::new(sofar) as Box<dyn Iterator<Item=_>>, add_arg)),
[INFO] [stderr]     |                                                                       +++
[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]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let base = Box::new(once(vec![])) as Box<dyn Iterator<Item=_>>;
[INFO] [stderr]     |                                              +++
[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 | ...|asg| (asg, vars)).into_iter()) as Box<Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 529 |                     body.iter().fold(Box::new(asg.unify_val(&expr, &head).map(|asg| (asg, vars)).into_iter()) as Box<dyn Iterator<Item=(Assignments, HashMap<usize, usize>)> + 'b>, move |asgs, t| {
[INFO] [stderr]     |                                                                                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: the type `[basics::Space; 42]` does not permit being left uninitialized
[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]    |                                                                           this code causes undefined behavior when executed
[INFO] [stderr]    |                                                                           help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr] note: enums with multiple inhabited variants have to be initialized to a variant
[INFO] [stderr]   --> src/basics.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub enum Space { Empty, Black, White }
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/go.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]    |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]    |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/go.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if neighbors(p).into_iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if neighbors(p).iter().flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                                 ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| !capture_inner(c, p, b, captured)) { return false }
[INFO] [stderr]    |                    ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:123:32
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 123 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]     |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:136:32
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in neighbors(p).into_iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in neighbors(p).iter().flat_map(|x| x) {
[INFO] [stderr]     |                                ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for &p in IntoIterator::into_iter(neighbors(p)).flat_map(|x| x) {
[INFO] [stderr]     |                   ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:151:25
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if neighbors(p).into_iter().flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |                         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if neighbors(p).iter().flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |                         ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if IntoIterator::into_iter(neighbors(p)).flat_map(|x| x).any(|&p| {
[INFO] [stderr]     |            ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/go.rs:155:35
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => neighbors(p).into_iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => neighbors(p).iter().filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                                   ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 c => IntoIterator::into_iter(neighbors(p)).filter_map(|&x| x).filter(|&p| self.board[p] != c.enemy()).count() == 1
[INFO] [stderr]     |                      ++++++++++++++++++++++++            ~
[INFO] [stderr] 
[INFO] [stderr] warning: `worthy-opponent` (lib) generated 34 warnings (run `cargo fix --lib -p worthy-opponent` to apply 16 suggestions)
[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]     |                                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn shrink(self: &Space) -> Box<dyn Iterator<Item=Space>> {
[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]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn add_arg<'a, 'b, I: Iterator<Item=Vec<Thing<'b>>> + 'a>(sofar: I, arg: &'a Expr<'b>) -> Box<dyn Iterator<Item=Vec<Thing<'b>>> + 'a> {
[INFO] [stderr]     |                                                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `worthy-opponent` (lib test) generated 35 warnings (33 duplicates) (run `cargo fix --lib -p worthy-opponent --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.7
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/worthy_opponent-0beeea16168863a4)
[INFO] [stdout] running 6 tests
[INFO] [stdout] test ggp::tests::atoms ... ok
[INFO] [stdout] test ggp::tests::preds ... ok
[INFO] [stdout] test ninemensmorris::tests::all_spaces_in_seen_by_four ... ok
[INFO] [stdout] test ninemensmorris::tests::adjacency_is_mutual ... ok
[INFO] [stdout] test ggp::tests::tic_tac_toe ... ok
[INFO] [stdout] test basics::tests::history_present_iff_added ... ok
[INFO] [stderr]      Running unittests src/bin/two-player.rs (/opt/rustwide/target/debug/deps/two_player-d971c8d4e1355703)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.28s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/worthy-opponent.rs (/opt/rustwide/target/debug/deps/worthy_opponent-02342fa2b01bf1c8)
[INFO] [stderr]    Doc-tests worthy-opponent
[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; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a5877ada7fd4ec0ef4e4dbff11809f5bae6e8093d29908772521a613ac438d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a5877ada7fd4ec0ef4e4dbff11809f5bae6e8093d29908772521a613ac438d6", kill_on_drop: false }`
[INFO] [stdout] 2a5877ada7fd4ec0ef4e4dbff11809f5bae6e8093d29908772521a613ac438d6
