[INFO] fetching crate topdown-rs 0.3.3...
[INFO] checking topdown-rs-0.3.3 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate topdown-rs 0.3.3 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate topdown-rs 0.3.3 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate topdown-rs 0.3.3
[INFO] finished tweaking crates.io crate topdown-rs 0.3.3
[INFO] tweaked toml for crates.io crate topdown-rs 0.3.3 written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3266a5041272b3a79786ce29a241dee1b349b7350e18ef823659909abe70f8f
[INFO] running `Command { std: "docker" "start" "-a" "f3266a5041272b3a79786ce29a241dee1b349b7350e18ef823659909abe70f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3266a5041272b3a79786ce29a241dee1b349b7350e18ef823659909abe70f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3266a5041272b3a79786ce29a241dee1b349b7350e18ef823659909abe70f8f", kill_on_drop: false }`
[INFO] [stdout] f3266a5041272b3a79786ce29a241dee1b349b7350e18ef823659909abe70f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b85a09991c64ef30cfc47d2f6a8a27e742317f575e8bd5ca56f9e5cfdb29be81
[INFO] running `Command { std: "docker" "start" "-a" "b85a09991c64ef30cfc47d2f6a8a27e742317f575e8bd5ca56f9e5cfdb29be81", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking topdown-rs v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     term: &'a (Parser<T>+'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:53
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:64
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     term: &'a (Parser<T>+'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:53
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:64
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/choice.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parsers: &'a [&'a(Parser<T>+'a)]
[INFO] [stdout]   |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/choice.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn choice<'a, T>(p: &'a [&'a (Parser<T> + 'a)]) -> Choice<'a, T> {
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/until.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/until.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn until<'a, T>(t:&'a (Parser<T>+'a)) -> Until<'a, T> {
[INFO] [stdout]   |                            ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn many<'a, T>(p: &'a (Parser<T> + 'a)) -> Many<'a, T> {
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many1.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many1.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn many1<'a, T>(p: &'a (Parser<T> + 'a)) -> Many1<'a, T> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/try.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T> + 'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/try.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn try<'a, T>(p: &'a(Parser<T>+'a)) -> Try<'a, T> {
[INFO] [stdout]   |                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     cond: &'a (Parser<S> + 'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     parser: &'a (Parser<T> + 'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn cond<'a, S, T:Clone>(c: &'a (Parser<S> + 'a), p: &'a (Parser<T> + 'a), e: T) -> Cond<'a, S, T> {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn cond<'a, S, T:Clone>(c: &'a (Parser<S> + 'a), p: &'a (Parser<T> + 'a), e: T) -> Cond<'a, S, T> {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/opt.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/opt.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn opt<'a, T:Clone>(p:&'a (Parser<T>+'a), d: T) -> Opt<'a, T> {
[INFO] [stdout]   |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     delim: &'a (Parser<String>+'a),
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:9:29
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn split<'a, T>(p: &'a (Parser<T> + 'a), d: &'a (Parser<String> + 'a), a: bool) -> Split<'a, T> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:9:54
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn split<'a, T>(p: &'a (Parser<T> + 'a), d: &'a (Parser<String> + 'a), a: bool) -> Split<'a, T> {
[INFO] [stdout]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     parser: &'a (Parser<S>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     stop: &'a (Parser<T>+'a)
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn many_until<'a, S, T>(p: &'a (Parser<S> + 'a), s: &'a (Parser<T> + 'a)) -> ManyUntil<'a, S, T> {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn many_until<'a, S, T>(p: &'a (Parser<S> + 'a), s: &'a (Parser<T> + 'a)) -> ManyUntil<'a, S, T> {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |     hooks: Vec<&'a (ParserHook+'a)>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn ParserHook+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:178:43
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn add_hook(&mut self, hook: &'a (ParserHook+'a)) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn ParserHook+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:195:37
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn accept<T>(&mut self, p: &Parser<T>) -> ParserResult<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn Parser<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     term: &'a (Parser<T>+'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:53
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainl.rs:9:64
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainl<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a), a: bool) -> Chainl<'a, T> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainl.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     impl<'a> Parser<Box<Fn(isize, isize) -> isize + 'a>> for Op<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainl.rs:57:64
[INFO] [stdout]    |
[INFO] [stdout] 57 |         fn _parse(&self, cs: &mut CharSeq) -> ParserResult<Box<Fn(isize, isize) -> isize + 'a>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainl.rs:61:75
[INFO] [stdout]    |
[INFO] [stdout] 61 |                         return (Box::new(|a:isize, b:isize|  a+b)) as Box<Fn(isize, isize) -> isize + 'a>;
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainl.rs:63:75
[INFO] [stdout]    |
[INFO] [stdout] 63 |                         return (Box::new(|a:isize, b:isize|  a-b)) as Box<Fn(isize, isize) -> isize + 'a>;
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     term: &'a (Parser<T>+'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     operator: &'a (Parser<Box<Fn(T, T) -> T + 'a>>+'a),
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:53
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<Box<Fn(T, T) -> T + 'a>> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/chainr.rs:9:64
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn chainr<'a, T>(p: &'a (Parser<T>+'a), o: &'a (Parser<Box<Fn(T, T) -> T + 'a>> + 'a), a: bool) -> Chainr<'a, T> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, T) -> T + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainr.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |     impl<'a> Parser<Box<Fn(isize, isize) -> isize + 'a>> for Op<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainr.rs:50:64
[INFO] [stdout]    |
[INFO] [stdout] 50 |         fn _parse(&self, cs: &mut CharSeq) -> ParserResult<Box<Fn(isize, isize) -> isize + 'a>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainr.rs:54:80
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   return (Box::new(|a:isize, b:isize|  a+b)) as Box<Fn(isize, isize) -> isize + 'a>;
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/chainr.rs:56:80
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   return (Box::new(|a:isize, b:isize|  a-b)) as Box<Fn(isize, isize) -> isize + 'a>;
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(isize, isize) -> isize + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/choice.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parsers: &'a [&'a(Parser<T>+'a)]
[INFO] [stdout]   |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/choice.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn choice<'a, T>(p: &'a [&'a (Parser<T> + 'a)]) -> Choice<'a, T> {
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/choice.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let l: &[&Parser<String>] = &[&("abc"), &("def")];
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/choice.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let l: &[&Parser<String>] = &[&("ghi"), &("def")];
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/choice.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let l: &[&Parser<String>] = &[&a, &b];
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/until.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/until.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn until<'a, T>(t:&'a (Parser<T>+'a)) -> Until<'a, T> {
[INFO] [stdout]   |                            ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn many<'a, T>(p: &'a (Parser<T> + 'a)) -> Many<'a, T> {
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many1.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many1.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn many1<'a, T>(p: &'a (Parser<T> + 'a)) -> Many1<'a, T> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/try.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T> + 'a)
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/try.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn try<'a, T>(p: &'a(Parser<T>+'a)) -> Try<'a, T> {
[INFO] [stdout]   |                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     cond: &'a (Parser<S> + 'a),
[INFO] [stdout]   |                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     parser: &'a (Parser<T> + 'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn cond<'a, S, T:Clone>(c: &'a (Parser<S> + 'a), p: &'a (Parser<T> + 'a), e: T) -> Cond<'a, S, T> {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cond.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn cond<'a, S, T:Clone>(c: &'a (Parser<S> + 'a), p: &'a (Parser<T> + 'a), e: T) -> Cond<'a, S, T> {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/opt.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/opt.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn opt<'a, T:Clone>(p:&'a (Parser<T>+'a), d: T) -> Opt<'a, T> {
[INFO] [stdout]   |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     parser: &'a (Parser<T>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |     delim: &'a (Parser<String>+'a),
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:9:29
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn split<'a, T>(p: &'a (Parser<T> + 'a), d: &'a (Parser<String> + 'a), a: bool) -> Split<'a, T> {
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/split.rs:9:54
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn split<'a, T>(p: &'a (Parser<T> + 'a), d: &'a (Parser<String> + 'a), a: bool) -> Split<'a, T> {
[INFO] [stdout]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<String> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     parser: &'a (Parser<S>+'a),
[INFO] [stdout]   |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     stop: &'a (Parser<T>+'a)
[INFO] [stdout]   |                ^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T>+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn many_until<'a, S, T>(p: &'a (Parser<S> + 'a), s: &'a (Parser<T> + 'a)) -> ManyUntil<'a, S, T> {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<S> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/many_until.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn many_until<'a, S, T>(p: &'a (Parser<S> + 'a), s: &'a (Parser<T> + 'a)) -> ManyUntil<'a, S, T> {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Parser<T> + 'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |     hooks: Vec<&'a (ParserHook+'a)>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn ParserHook+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:178:43
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn add_hook(&mut self, hook: &'a (ParserHook+'a)) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn ParserHook+'a`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:195:37
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn accept<T>(&mut self, p: &Parser<T>) -> ParserResult<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn Parser<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/chainl.rs:54:15
[INFO] [stdout]    |
[INFO] [stdout] 54 |     struct Op<'a>;
[INFO] [stdout]    |               ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: parameter `'a` is never used
[INFO] [stdout]   --> src/chainr.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |     struct Op<'a>;
[INFO] [stdout]    |               ^^ unused parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 50 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `topdown-rs` due to 3 previous errors; 50 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b85a09991c64ef30cfc47d2f6a8a27e742317f575e8bd5ca56f9e5cfdb29be81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85a09991c64ef30cfc47d2f6a8a27e742317f575e8bd5ca56f9e5cfdb29be81", kill_on_drop: false }`
[INFO] [stdout] b85a09991c64ef30cfc47d2f6a8a27e742317f575e8bd5ca56f9e5cfdb29be81