[INFO] updating cached repository https://github.com/joelverhagen/euler
[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] c480377a8b30f8f719edebdc6ff96e69b47d4638
[INFO] checking joelverhagen/euler against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoelverhagen%2Feuler" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joelverhagen/euler on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/joelverhagen/euler
[INFO] finished tweaking git repo https://github.com/joelverhagen/euler
[INFO] tweaked toml for git repo https://github.com/joelverhagen/euler written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/joelverhagen/euler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 935c9adbc5d65bbf37f6e7c41ab5f272667e29b159410531f3f17ae98cbe1b0b
[INFO] running `"docker" "start" "-a" "935c9adbc5d65bbf37f6e7c41ab5f272667e29b159410531f3f17ae98cbe1b0b"`
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking projecteuler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/support/files.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut file = try!(File::open(path));
[INFO] [stderr]   |                    ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/support/files.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     try!(file.read_to_string(&mut content));
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/problems/problem17.rs:63:6
[INFO] [stderr]    |
[INFO] [stderr] 63 |         (2 ... 9, 0) => match ten_to_word(t) {
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/problems/problem17.rs:67:6
[INFO] [stderr]    |
[INFO] [stderr] 67 |         (2 ... 9, _) => match (ten_to_word(t), digit_to_word(u)) {
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/support/files.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut file = try!(File::open(path));
[INFO] [stderr]   |                    ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/support/files.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     try!(file.read_to_string(&mut content));
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/problems/problem17.rs:63:6
[INFO] [stderr]    |
[INFO] [stderr] 63 |         (2 ... 9, 0) => match ten_to_word(t) {
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/problems/problem17.rs:67:6
[INFO] [stderr]    |
[INFO] [stderr] 67 |         (2 ... 9, _) => match (ten_to_word(t), digit_to_word(u)) {
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: private type `support::digits::IntegerDigits<T>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/digits.rs:28:2
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn iter_digits(&self) -> IntegerDigits<T>;
[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 `support::digits::IntegerDigits<T>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/digits.rs:32:2
[INFO] [stderr]    |
[INFO] [stderr] 32 |       fn iter_digits(&self) -> IntegerDigits<T> {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 33 | |         IntegerDigits { remaining: self.clone() }
[INFO] [stderr] 34 | |     }
[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 `support::graph::model::Successors<'_, N, E>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/graph/model.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 | /     pub fn successors(&self, source: NodeIndex) -> Successors<N, E> {
[INFO] [stderr] 67 | |         let first_outgoing_edge = self.nodes[source].first_outgoing_edge;
[INFO] [stderr] 68 | |         Successors { graph: self, current_edge_index: first_outgoing_edge }
[INFO] [stderr] 69 | |     }
[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 `support::graph::model::Successors<N, E>` is private
[INFO] [stderr]   --> src/support/graph/search.rs:20:26
[INFO] [stderr]    |
[INFO] [stderr] 20 |         for successor in graph.successors(node_index) {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::graph::model::Successors<N, i32>` is private
[INFO] [stderr]   --> src/support/graph/search.rs:89:22
[INFO] [stderr]    |
[INFO] [stderr] 89 |             for s in graph.successors(u) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<i32>` is private
[INFO] [stderr]  --> src/problems/problem4.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let digits: Vec<u8> = i.iter_digits().collect();
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<num::BigInt>` is private
[INFO] [stderr]   --> src/problems/problem16.rs:8:2
[INFO] [stderr]    |
[INFO] [stderr] 8  |       pow(BigInt::from_u64(2).unwrap(), 1000)
[INFO] [stderr]    |  _____^
[INFO] [stderr] 9  | |         .iter_digits()
[INFO] [stderr] 10 | |         .map(|d| d as u64)
[INFO] [stderr] 11 | |         .fold(0, |s, v| s + v)
[INFO] [stderr]    | |______________________________^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]   --> src/problems/problem17.rs:76:28
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut digits: Vec<u8> = n.iter_digits().collect();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<num::BigInt>` is private
[INFO] [stderr]  --> src/problems/problem20.rs:6:2
[INFO] [stderr]   |
[INFO] [stderr] 6 |     factorial(100).iter_digits().map(|d| d as i32).fold(0, |s, v| s + v)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]  --> src/problems/problem30.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 |         if new_max.iter_digits().count() < digits {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]   --> src/problems/problem30.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let maybe_i = i.iter_digits().fold(0, |s, d| s + pow(d as u64, p));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `projecteuler`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: private type `support::digits::IntegerDigits<T>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/digits.rs:28:2
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn iter_digits(&self) -> IntegerDigits<T>;
[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 `support::digits::IntegerDigits<T>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/digits.rs:32:2
[INFO] [stderr]    |
[INFO] [stderr] 32 |       fn iter_digits(&self) -> IntegerDigits<T> {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 33 | |         IntegerDigits { remaining: self.clone() }
[INFO] [stderr] 34 | |     }
[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 `support::graph::model::Successors<'_, N, E>` in public interface (error E0446)
[INFO] [stderr]   --> src/support/graph/model.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 | /     pub fn successors(&self, source: NodeIndex) -> Successors<N, E> {
[INFO] [stderr] 67 | |         let first_outgoing_edge = self.nodes[source].first_outgoing_edge;
[INFO] [stderr] 68 | |         Successors { graph: self, current_edge_index: first_outgoing_edge }
[INFO] [stderr] 69 | |     }
[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 `support::graph::model::Successors<N, E>` is private
[INFO] [stderr]   --> src/support/graph/search.rs:20:26
[INFO] [stderr]    |
[INFO] [stderr] 20 |         for successor in graph.successors(node_index) {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::graph::model::Successors<N, i32>` is private
[INFO] [stderr]   --> src/support/graph/search.rs:89:22
[INFO] [stderr]    |
[INFO] [stderr] 89 |             for s in graph.successors(u) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<i32>` is private
[INFO] [stderr]  --> src/problems/problem4.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let digits: Vec<u8> = i.iter_digits().collect();
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<num::BigInt>` is private
[INFO] [stderr]   --> src/problems/problem16.rs:8:2
[INFO] [stderr]    |
[INFO] [stderr] 8  |       pow(BigInt::from_u64(2).unwrap(), 1000)
[INFO] [stderr]    |  _____^
[INFO] [stderr] 9  | |         .iter_digits()
[INFO] [stderr] 10 | |         .map(|d| d as u64)
[INFO] [stderr] 11 | |         .fold(0, |s, v| s + v)
[INFO] [stderr]    | |______________________________^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]   --> src/problems/problem17.rs:76:28
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut digits: Vec<u8> = n.iter_digits().collect();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<num::BigInt>` is private
[INFO] [stderr]  --> src/problems/problem20.rs:6:2
[INFO] [stderr]   |
[INFO] [stderr] 6 |     factorial(100).iter_digits().map(|d| d as i32).fold(0, |s, v| s + v)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]  --> src/problems/problem30.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 |         if new_max.iter_digits().count() < digits {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: type `support::digits::IntegerDigits<u64>` is private
[INFO] [stderr]   --> src/problems/problem30.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let maybe_i = i.iter_digits().fold(0, |s, d| s + pow(d as u64, p));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ private type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `projecteuler`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "935c9adbc5d65bbf37f6e7c41ab5f272667e29b159410531f3f17ae98cbe1b0b"`
[INFO] running `"docker" "rm" "-f" "935c9adbc5d65bbf37f6e7c41ab5f272667e29b159410531f3f17ae98cbe1b0b"`
[INFO] [stdout] 935c9adbc5d65bbf37f6e7c41ab5f272667e29b159410531f3f17ae98cbe1b0b
