[INFO] cloning repository https://github.com/tcr/rust-corrode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tcr/rust-corrode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Frust-corrode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Frust-corrode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 383a5a1c872935e95235e9dbb4f8039cfe7ae53f
[INFO] documenting tcr/rust-corrode against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcr%2Frust-corrode" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tcr/rust-corrode on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tcr/rust-corrode
[INFO] finished tweaking git repo https://github.com/tcr/rust-corrode
[INFO] tweaked toml for git repo https://github.com/tcr/rust-corrode written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/tcr/rust-corrode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcba247f0570129fda8795eeae6e22286aa91cd79edd1c498b7d9625a11abacc
[INFO] running `Command { std: "docker" "start" "-a" "bcba247f0570129fda8795eeae6e22286aa91cd79edd1c498b7d9625a11abacc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcba247f0570129fda8795eeae6e22286aa91cd79edd1c498b7d9625a11abacc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcba247f0570129fda8795eeae6e22286aa91cd79edd1c498b7d9625a11abacc", kill_on_drop: false }`
[INFO] [stdout] bcba247f0570129fda8795eeae6e22286aa91cd79edd1c498b7d9625a11abacc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d45c61b77cc9ebc571e0a8590f1ea42aff39d454fd14c3a6c56540c0fafd283
[INFO] running `Command { std: "docker" "start" "-a" "5d45c61b77cc9ebc571e0a8590f1ea42aff39d454fd14c3a6c56540c0fafd283", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling quote v0.1.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking maplit v0.1.4
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling syn v0.7.1
[INFO] [stderr]     Checking itertools v0.6.1
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling num-derive v0.1.40
[INFO] [stderr]     Checking support-map v0.1.0 (/opt/rustwide/workdir/support-map)
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking num-bigint v0.1.39
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> support-map/src/lib.rs:64:58
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn unionWith<A: Hash + Eq + Clone, B>(apply: Box<Fn(B, B) -> B>, left: HashMap<A, B>, right: HashMap<A, B>) -> HashMap<A, B> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 -     pub fn unionWith<A: Hash + Eq + Clone, B>(apply: Box<Fn(B, B) -> B>, left: HashMap<A, B>, right: HashMap<A, B>) -> HashMap<A, B> {
[INFO] [stdout] 64 +     pub fn unionWith<A: Hash + Eq + Clone, B>(apply: Box<dyn Fn(B, B) -> B>, left: HashMap<A, B>, right: HashMap<A, B>) -> HashMap<A, B> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> support-map/src/lib.rs:69:61
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn fromListWith<A: Hash + Eq + Clone, B>(apply: Box<Fn(B, B) -> B>, input: Vec<(A, B)>) -> HashMap<A, 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] 69 -     pub fn fromListWith<A: Hash + Eq + Clone, B>(apply: Box<Fn(B, B) -> B>, input: Vec<(A, B)>) -> HashMap<A, B> {
[INFO] [stdout] 69 +     pub fn fromListWith<A: Hash + Eq + Clone, B>(apply: Box<dyn Fn(B, B) -> B>, input: Vec<(A, B)>) -> HashMap<A, B> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:166:36
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn unionWith<B>(apply: Box<Fn(B, B) -> B>, left: HashMap<isize, B>, right: HashMap<isize, B>) -> HashMap<isize, 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] 166 -     pub fn unionWith<B>(apply: Box<Fn(B, B) -> B>, left: HashMap<isize, B>, right: HashMap<isize, B>) -> HashMap<isize, B> {
[INFO] [stdout] 166 +     pub fn unionWith<B>(apply: Box<dyn Fn(B, B) -> B>, left: HashMap<isize, B>, right: HashMap<isize, B>) -> HashMap<isize, B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:223:49
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn intersectionWith<A, B, C>(apply: Box<Fn(A, B) -> C>, left: IntMap<A>, right: IntMap<B>) -> IntMap<C> {
[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] 223 -     pub fn intersectionWith<A, B, C>(apply: Box<Fn(A, B) -> C>, left: IntMap<A>, right: IntMap<B>) -> IntMap<C> {
[INFO] [stdout] 223 +     pub fn intersectionWith<A, B, C>(apply: Box<dyn Fn(A, B) -> C>, left: IntMap<A>, right: IntMap<B>) -> IntMap<C> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:228:39
[INFO] [stdout]     |
[INFO] [stdout] 228 |     pub fn fromListWith<B>(apply: Box<Fn(B, B) -> B>, input: Vec<(isize, B)>) -> IntMap<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] 228 -     pub fn fromListWith<B>(apply: Box<Fn(B, B) -> B>, input: Vec<(isize, B)>) -> IntMap<B> {
[INFO] [stdout] 228 +     pub fn fromListWith<B>(apply: Box<dyn Fn(B, B) -> B>, input: Vec<(isize, B)>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:248:45
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn mapMaybeWithKey<A, B>(apply: Box<Fn(isize, A) -> Option<B>>, input: IntMap<A>) -> IntMap<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] 248 -     pub fn mapMaybeWithKey<A, B>(apply: Box<Fn(isize, A) -> Option<B>>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout] 248 +     pub fn mapMaybeWithKey<A, B>(apply: Box<dyn Fn(isize, A) -> Option<B>>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:258:34
[INFO] [stdout]     |
[INFO] [stdout] 258 |     pub fn fromSet<B>(apply: Box<Fn(isize) -> B>, input: HashSet<isize>) -> IntMap<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] 258 -     pub fn fromSet<B>(apply: Box<Fn(isize) -> B>, input: HashSet<isize>) -> IntMap<B> {
[INFO] [stdout] 258 +     pub fn fromSet<B>(apply: Box<dyn Fn(isize) -> B>, input: HashSet<isize>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:263:33
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn map<A, B>(apply: Box<Fn(A) -> B>, input: IntMap<A>) -> IntMap<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] 263 -     pub fn map<A, B>(apply: Box<Fn(A) -> B>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout] 263 +     pub fn map<A, B>(apply: Box<dyn Fn(A) -> B>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:273:37
[INFO] [stdout]     |
[INFO] [stdout] 273 |     pub fn unionsWith<B>(apply: Box<Fn(B, B) -> B>, left: IntMap<B>, right: IntMap<B>) -> IntMap<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] 273 -     pub fn unionsWith<B>(apply: Box<Fn(B, B) -> B>, left: IntMap<B>, right: IntMap<B>) -> IntMap<B> {
[INFO] [stdout] 273 +     pub fn unionsWith<B>(apply: Box<dyn Fn(B, B) -> B>, left: IntMap<B>, right: IntMap<B>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:278:46
[INFO] [stdout]     |
[INFO] [stdout] 278 |     pub fn updateLookupWithKey<B>(apply: Box<Fn(isize, B) -> Option<B>>, key: isize, input: IntMap<B>) -> (Option<B>, IntMap<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] 278 -     pub fn updateLookupWithKey<B>(apply: Box<Fn(isize, B) -> Option<B>>, key: isize, input: IntMap<B>) -> (Option<B>, IntMap<B>) {
[INFO] [stdout] 278 +     pub fn updateLookupWithKey<B>(apply: Box<dyn Fn(isize, B) -> Option<B>>, key: isize, input: IntMap<B>) -> (Option<B>, IntMap<B>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:293:40
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn filterWithKey<B>(apply: Box<Fn(isize, B) -> bool>, input: IntMap<B>) -> IntMap<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] 293 -     pub fn filterWithKey<B>(apply: Box<Fn(isize, B) -> bool>, input: IntMap<B>) -> IntMap<B> {
[INFO] [stdout] 293 +     pub fn filterWithKey<B>(apply: Box<dyn Fn(isize, B) -> bool>, input: IntMap<B>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:298:38
[INFO] [stdout]     |
[INFO] [stdout] 298 |     pub fn mapMaybe<A, B>(apply: Box<Fn(A) -> Option<B>>, input: IntMap<A>) -> IntMap<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] 298 -     pub fn mapMaybe<A, B>(apply: Box<Fn(A) -> Option<B>>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout] 298 +     pub fn mapMaybe<A, B>(apply: Box<dyn Fn(A) -> Option<B>>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:303:42
[INFO] [stdout]     |
[INFO] [stdout] 303 |     pub fn mapEither<A, B, C>(apply: Box<Fn(A) -> Result<C, B>>, input: IntMap<A>) -> (IntMap<B>, IntMap<C>) {
[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] 303 -     pub fn mapEither<A, B, C>(apply: Box<Fn(A) -> Result<C, B>>, input: IntMap<A>) -> (IntMap<B>, IntMap<C>) {
[INFO] [stdout] 303 +     pub fn mapEither<A, B, C>(apply: Box<dyn Fn(A) -> Result<C, B>>, input: IntMap<A>) -> (IntMap<B>, IntMap<C>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:313:40
[INFO] [stdout]     |
[INFO] [stdout] 313 |     pub fn mapWithKey<A, B>(apply: Box<Fn(isize, A) -> B>, input: IntMap<A>) -> IntMap<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] 313 -     pub fn mapWithKey<A, B>(apply: Box<Fn(isize, A) -> B>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout] 313 +     pub fn mapWithKey<A, B>(apply: Box<dyn Fn(isize, A) -> B>, input: IntMap<A>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> support-map/src/lib.rs:318:33
[INFO] [stdout]     |
[INFO] [stdout] 318 |     pub fn filter<B>(apply: Box<Fn(B) -> bool>, input: IntMap<B>) -> IntMap<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] 318 -     pub fn filter<B>(apply: Box<Fn(B) -> bool>, input: IntMap<B>) -> IntMap<B> {
[INFO] [stdout] 318 +     pub fn filter<B>(apply: Box<dyn Fn(B) -> bool>, input: IntMap<B>) -> IntMap<B> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]    Compiling parser-c-macro v0.3.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/parser-c-macro-0.3.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `parser-c-macro` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5d45c61b77cc9ebc571e0a8590f1ea42aff39d454fd14c3a6c56540c0fafd283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d45c61b77cc9ebc571e0a8590f1ea42aff39d454fd14c3a6c56540c0fafd283", kill_on_drop: false }`
[INFO] [stdout] 5d45c61b77cc9ebc571e0a8590f1ea42aff39d454fd14c3a6c56540c0fafd283