[INFO] updating cached repository https://github.com/madadam/calendar.rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1feae481e779aba72c2232734be7470e14178ac0
[INFO] checking madadam/calendar.rs against try#ba14a92a10441c4b839ce71e6ef5f7a48bbff18f for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadadam%2Fcalendar.rs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madadam/calendar.rs on toolchain ba14a92a10441c4b839ce71e6ef5f7a48bbff18f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/madadam/calendar.rs
[INFO] finished tweaking git repo https://github.com/madadam/calendar.rs
[INFO] tweaked toml for git repo https://github.com/madadam/calendar.rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/madadam/calendar.rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 976810dcff1d8ff0055216f43f0e7c23b75ae2da7c52ae6c67ed17a251378287
[INFO] running `"docker" "start" "-a" "976810dcff1d8ff0055216f43f0e7c23b75ae2da7c52ae6c67ed17a251378287"`
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking calendar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: private type `advanced_iterator::Chunk<Self>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | /     fn chunk(self, size: usize) -> Chunk<Self>
[INFO] [stderr] 12 | |         where Self: Sized
[INFO] [stderr] 13 | |     {
[INFO] [stderr] 14 | |         Chunk{ inner: self, size: size }
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     fn interleave(self) -> Interleave<Self::Item>
[INFO] [stderr] 20 | |         where Self: Sized, Self::Item: Iterator
[INFO] [stderr] 21 | |     {
[INFO] [stderr] 22 | |         let inner = self.collect::<Vec<_>>();
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |         Interleave{ inner: inner, index: 0 }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Chunk<advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | /     fn transpose(self) -> Chunk<Interleave<Self::Item>>
[INFO] [stderr] 31 | |         where Self: Sized + ExactSizeIterator, Self::Item: Iterator
[INFO] [stderr] 32 | |     {
[INFO] [stderr] 33 | |         let len = self.len();
[INFO] [stderr] 34 | |         self.interleave().chunk(len)
[INFO] [stderr] 35 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | /     fn transpose(self) -> Chunk<Interleave<Self::Item>>
[INFO] [stderr] 31 | |         where Self: Sized + ExactSizeIterator, Self::Item: Iterator
[INFO] [stderr] 32 | |     {
[INFO] [stderr] 33 | |         let len = self.len();
[INFO] [stderr] 34 | |         self.interleave().chunk(len)
[INFO] [stderr] 35 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::ChainAll<Self>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | /     fn chain_all(self) -> ChainAll<Self>
[INFO] [stderr] 40 | |         where Self: Sized, Self::Item: Iterator
[INFO] [stderr] 41 | |     {
[INFO] [stderr] 42 | |         ChainAll { current: None, all: self }
[INFO] [stderr] 43 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     pub fn by_month(self) -> ByMonth {
[INFO] [stderr] 36 | |         self.group_by(Date::month)
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | /     pub fn by_week(self) -> ByWeek {
[INFO] [stderr] 40 | |         self.group_by(week_number)
[INFO] [stderr] 41 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub type ByMonth = GroupBy<fn(&Date) -> u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub type ByWeek  = GroupBy<fn(&Date) -> u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/format.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / pub type MonthLayout =
[INFO] [stderr] 9  | |     Chain<
[INFO] [stderr] 10 | |         Once<String>,
[INFO] [stderr] 11 | |         Chain<
[INFO] [stderr] 12 | |             Map<ByWeek, FnFormatWeek>,
[INFO] [stderr] 13 | |             Take<Repeat<String>>>>;
[INFO] [stderr]    | |___________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/format.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | / pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr] 16 | |     let week_count   = month.by_week().count();
[INFO] [stderr] 17 | |     let title        = once(month_title(month.start));
[INFO] [stderr] 18 | |     let padding_item = repeat(" ").take(22).collect::<String>();
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     title.chain(month.by_week().map(format_week as FnFormatWeek).chain(padding))
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] error: type `advanced_iterator::ChainAll<std::iter::Map<advanced_iterator::Chunk<std::iter::Map<date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>, fn(date::DateRange) -> std::iter::Chain<std::iter::Once<std::string::String>, std::iter::Chain<std::iter::Map<date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>, fn(date::DateRange) -> std::string::String>, std::iter::Take<std::iter::Repeat<std::string::String>>>> {format::layout_month}>>, [closure@src/main.rs:40:24: 40:41]>>` is private
[INFO] [stderr]   --> src/main.rs:36:20
[INFO] [stderr]    |
[INFO] [stderr] 36 |       let calendar = dates(args.arg_year)
[INFO] [stderr]    |  ____________________^
[INFO] [stderr] 37 | |                   .by_month()
[INFO] [stderr] 38 | |                   .map(layout_month)
[INFO] [stderr] 39 | |                   .chunk(args.flag_months_per_line)
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |                   .map(|c| c.collect::<String>())
[INFO] [stderr] 43 | |                   .join("\n");
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | /     Chain<
[INFO] [stderr] 10 | |         Once<String>,
[INFO] [stderr] 11 | |         Chain<
[INFO] [stderr] 12 | |             Map<ByWeek, FnFormatWeek>,
[INFO] [stderr] 13 | |             Take<Repeat<String>>>>;
[INFO] [stderr]    | |__________________________________^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:15:42
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr]    |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:15:54
[INFO] [stderr]    |
[INFO] [stderr] 15 |   pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr]    |  ______________________________________________________^
[INFO] [stderr] 16 | |     let week_count   = month.by_week().count();
[INFO] [stderr] 17 | |     let title        = once(month_title(month.start));
[INFO] [stderr] 18 | |     let padding_item = repeat(" ").take(22).collect::<String>();
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     title.chain(month.by_week().map(format_week as FnFormatWeek).chain(padding))
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `calendar`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: private type `advanced_iterator::Chunk<Self>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | /     fn chunk(self, size: usize) -> Chunk<Self>
[INFO] [stderr] 12 | |         where Self: Sized
[INFO] [stderr] 13 | |     {
[INFO] [stderr] 14 | |         Chunk{ inner: self, size: size }
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     fn interleave(self) -> Interleave<Self::Item>
[INFO] [stderr] 20 | |         where Self: Sized, Self::Item: Iterator
[INFO] [stderr] 21 | |     {
[INFO] [stderr] 22 | |         let inner = self.collect::<Vec<_>>();
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |         Interleave{ inner: inner, index: 0 }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Chunk<advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | /     fn transpose(self) -> Chunk<Interleave<Self::Item>>
[INFO] [stderr] 31 | |         where Self: Sized + ExactSizeIterator, Self::Item: Iterator
[INFO] [stderr] 32 | |     {
[INFO] [stderr] 33 | |         let len = self.len();
[INFO] [stderr] 34 | |         self.interleave().chunk(len)
[INFO] [stderr] 35 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::Interleave<<Self as std::iter::Iterator>::Item>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | /     fn transpose(self) -> Chunk<Interleave<Self::Item>>
[INFO] [stderr] 31 | |         where Self: Sized + ExactSizeIterator, Self::Item: Iterator
[INFO] [stderr] 32 | |     {
[INFO] [stderr] 33 | |         let len = self.len();
[INFO] [stderr] 34 | |         self.interleave().chunk(len)
[INFO] [stderr] 35 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `advanced_iterator::ChainAll<Self>` in public interface (error E0446)
[INFO] [stderr]   --> src/advanced_iterator.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | /     fn chain_all(self) -> ChainAll<Self>
[INFO] [stderr] 40 | |         where Self: Sized, Self::Item: Iterator
[INFO] [stderr] 41 | |     {
[INFO] [stderr] 42 | |         ChainAll { current: None, all: self }
[INFO] [stderr] 43 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     pub fn by_month(self) -> ByMonth {
[INFO] [stderr] 36 | |         self.group_by(Date::month)
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | /     pub fn by_week(self) -> ByWeek {
[INFO] [stderr] 40 | |         self.group_by(week_number)
[INFO] [stderr] 41 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub type ByMonth = GroupBy<fn(&Date) -> u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/date.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub type ByWeek  = GroupBy<fn(&Date) -> u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/format.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / pub type MonthLayout =
[INFO] [stderr] 9  | |     Chain<
[INFO] [stderr] 10 | |         Once<String>,
[INFO] [stderr] 11 | |         Chain<
[INFO] [stderr] 12 | |             Map<ByWeek, FnFormatWeek>,
[INFO] [stderr] 13 | |             Take<Repeat<String>>>>;
[INFO] [stderr]    | |___________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` in public interface (error E0446)
[INFO] [stderr]   --> src/format.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | / pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr] 16 | |     let week_count   = month.by_week().count();
[INFO] [stderr] 17 | |     let title        = once(month_title(month.start));
[INFO] [stderr] 18 | |     let padding_item = repeat(" ").take(22).collect::<String>();
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     title.chain(month.by_week().map(format_week as FnFormatWeek).chain(padding))
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] error: type `advanced_iterator::ChainAll<std::iter::Map<advanced_iterator::Chunk<std::iter::Map<date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>, fn(date::DateRange) -> std::iter::Chain<std::iter::Once<std::string::String>, std::iter::Chain<std::iter::Map<date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>, fn(date::DateRange) -> std::string::String>, std::iter::Take<std::iter::Repeat<std::string::String>>>> {format::layout_month}>>, [closure@src/main.rs:40:24: 40:41]>>` is private
[INFO] [stderr]   --> src/main.rs:36:20
[INFO] [stderr]    |
[INFO] [stderr] 36 |       let calendar = dates(args.arg_year)
[INFO] [stderr]    |  ____________________^
[INFO] [stderr] 37 | |                   .by_month()
[INFO] [stderr] 38 | |                   .map(layout_month)
[INFO] [stderr] 39 | |                   .chunk(args.flag_months_per_line)
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |                   .map(|c| c.collect::<String>())
[INFO] [stderr] 43 | |                   .join("\n");
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | /     Chain<
[INFO] [stderr] 10 | |         Once<String>,
[INFO] [stderr] 11 | |         Chain<
[INFO] [stderr] 12 | |             Map<ByWeek, FnFormatWeek>,
[INFO] [stderr] 13 | |             Take<Repeat<String>>>>;
[INFO] [stderr]    | |__________________________________^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:15:42
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr]    |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:15:54
[INFO] [stderr]    |
[INFO] [stderr] 15 |   pub fn layout_month(month: DateRange) -> MonthLayout {
[INFO] [stderr]    |  ______________________________________________________^
[INFO] [stderr] 16 | |     let week_count   = month.by_week().count();
[INFO] [stderr] 17 | |     let title        = once(month_title(month.start));
[INFO] [stderr] 18 | |     let padding_item = repeat(" ").take(22).collect::<String>();
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     title.chain(month.by_week().map(format_week as FnFormatWeek).chain(padding))
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:53:22
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let mut layout = layout_month(month);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:55:16
[INFO] [stderr]    |
[INFO] [stderr] 55 |     assert_eq!(layout.next().unwrap(), "       January        ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 |     assert_eq!(layout.next().unwrap(), "           1  2  3  4 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:57:16
[INFO] [stderr]    |
[INFO] [stderr] 57 |     assert_eq!(layout.next().unwrap(), "  5  6  7  8  9 10 11 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:58:16
[INFO] [stderr]    |
[INFO] [stderr] 58 |     assert_eq!(layout.next().unwrap(), " 12 13 14 15 16 17 18 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:59:16
[INFO] [stderr]    |
[INFO] [stderr] 59 |     assert_eq!(layout.next().unwrap(), " 19 20 21 22 23 24 25 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:60:16
[INFO] [stderr]    |
[INFO] [stderr] 60 |     assert_eq!(layout.next().unwrap(), " 26 27 28 29 30 31    ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:61:16
[INFO] [stderr]    |
[INFO] [stderr] 61 |     assert_eq!(layout.next().unwrap(), "                      ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 |     assert_eq!(layout.next(), None);
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:65:22
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut layout = layout_month(month);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:67:16
[INFO] [stderr]    |
[INFO] [stderr] 67 |     assert_eq!(layout.next().unwrap(), "       February       ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |     assert_eq!(layout.next().unwrap(), "  1  2  3  4  5  6  7 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 |     assert_eq!(layout.next().unwrap(), "  8  9 10 11 12 13 14 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:70:16
[INFO] [stderr]    |
[INFO] [stderr] 70 |     assert_eq!(layout.next().unwrap(), " 15 16 17 18 19 20 21 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:71:16
[INFO] [stderr]    |
[INFO] [stderr] 71 |     assert_eq!(layout.next().unwrap(), " 22 23 24 25 26 27 28 ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:72:16
[INFO] [stderr]    |
[INFO] [stderr] 72 |     assert_eq!(layout.next().unwrap(), "                      ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:73:16
[INFO] [stderr]    |
[INFO] [stderr] 73 |     assert_eq!(layout.next().unwrap(), "                      ");
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: type `date::GroupBy<for<'r> fn(&'r chrono::Date<chrono::UTC>) -> u32>` is private
[INFO] [stderr]   --> src/format.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |     assert_eq!(layout.next(), None);
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 22 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `calendar`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "976810dcff1d8ff0055216f43f0e7c23b75ae2da7c52ae6c67ed17a251378287"`
[INFO] running `"docker" "rm" "-f" "976810dcff1d8ff0055216f43f0e7c23b75ae2da7c52ae6c67ed17a251378287"`
[INFO] [stdout] 976810dcff1d8ff0055216f43f0e7c23b75ae2da7c52ae6c67ed17a251378287