[INFO] fetching crate tree 0.4.1...
[INFO] checking tree-0.4.1 against beta-2019-10-27 for pr-65897
[INFO] extracting crate tree 0.4.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate tree 0.4.1 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tree 0.4.1
[INFO] finished tweaking crates.io crate tree 0.4.1
[INFO] tweaked toml for crates.io crate tree 0.4.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=allow" "-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" "+beta-2019-10-27" "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] 92a5414e75172aae90a5e2b8f660400ef5dc2b6dcd4b5ae3893f95e15f030b35
[INFO] running `"docker" "start" "-a" "92a5414e75172aae90a5e2b8f660400ef5dc2b6dcd4b5ae3893f95e15f030b35"`
[INFO] [stderr]     Checking compare v0.0.6
[INFO] [stderr]     Checking ordered_iter v0.1.1
[INFO] [stderr]     Checking tree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 0 parameters were supplied
[INFO] [stderr]    --> src/set.rs:235:48
[INFO] [stderr]     |
[INFO] [stderr] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stderr]     |                                                ^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `map` found for type `map::Map<T, (), C>` in the current scope
[INFO] [stderr]    --> src/set.rs:235:54
[INFO] [stderr]     |
[INFO] [stderr] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stderr]     |                                                      ^^^ help: there is a method with a similar name: `max`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/map.rs:22:1
[INFO] [stderr]     |
[INFO] [stderr] 22  | pub struct Map<K, V, C = Natural<K>> where C: Compare<K> {
[INFO] [stderr]     | -------------------------------------------------------- method `map` not found for this
[INFO] [stderr]     |
[INFO] [stderr]     = note: the method `map` exists but the following trait bounds were not satisfied:
[INFO] [stderr]             `&mut map::Map<T, (), C> : std::iter::Iterator`
[INFO] [stderr]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]     = note: the following trait defines an item `map`, perhaps you need to implement it:
[INFO] [stderr]             candidate #1: `std::iter::Iterator`
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 0 parameters were supplied
[INFO] [stderr]    --> src/set.rs:291:48
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stderr]     |                                                ^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `map` found for type `map::Map<T, (), C>` in the current scope
[INFO] [stderr]    --> src/set.rs:291:54
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stderr]     |                                                      ^^^ help: there is a method with a similar name: `max`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/map.rs:22:1
[INFO] [stderr]     |
[INFO] [stderr] 22  | pub struct Map<K, V, C = Natural<K>> where C: Compare<K> {
[INFO] [stderr]     | -------------------------------------------------------- method `map` not found for this
[INFO] [stderr]     |
[INFO] [stderr]     = note: the method `map` exists but the following trait bounds were not satisfied:
[INFO] [stderr]             `&mut map::Map<T, (), C> : std::iter::Iterator`
[INFO] [stderr]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]     = note: the following trait defines an item `map`, perhaps you need to implement it:
[INFO] [stderr]             candidate #1: `std::iter::Iterator`
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 0 parameters were supplied
[INFO] [stderr]    --> src/set.rs:235:48
[INFO] [stderr]     |
[INFO] [stderr] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stderr]     |                                                ^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0061, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0061`.
[INFO] [stderr] error[E0599]: no method named `map` found for type `map::Map<T, (), C>` in the current scope
[INFO] [stderr]    --> src/set.rs:235:54
[INFO] [stderr]     |
[INFO] [stderr] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stderr]     |                                                      ^^^ help: there is a method with a similar name: `max`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/map.rs:22:1
[INFO] [stderr]     |
[INFO] [stderr] 22  | pub struct Map<K, V, C = Natural<K>> where C: Compare<K> {
[INFO] [stderr]     | -------------------------------------------------------- method `map` not found for this
[INFO] [stderr]     |
[INFO] [stderr]     = note: the method `map` exists but the following trait bounds were not satisfied:
[INFO] [stderr]             `&mut map::Map<T, (), C> : std::iter::Iterator`
[INFO] [stderr]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]     = note: the following trait defines an item `map`, perhaps you need to implement it:
[INFO] [stderr]             candidate #1: `std::iter::Iterator`
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 0 parameters were supplied
[INFO] [stderr]    --> src/set.rs:291:48
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stderr]     |                                                ^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `map` found for type `map::Map<T, (), C>` in the current scope
[INFO] [stderr]    --> src/set.rs:291:54
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stderr]     |                                                      ^^^ help: there is a method with a similar name: `max`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/map.rs:22:1
[INFO] [stderr]     |
[INFO] [stderr] 22  | pub struct Map<K, V, C = Natural<K>> where C: Compare<K> {
[INFO] [stderr]     | -------------------------------------------------------- method `map` not found for this
[INFO] [stderr]     |
[INFO] [stderr]     = note: the method `map` exists but the following trait bounds were not satisfied:
[INFO] [stderr]             `&mut map::Map<T, (), C> : std::iter::Iterator`
[INFO] [stderr]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stderr]     = note: the following trait defines an item `map`, perhaps you need to implement it:
[INFO] [stderr]             candidate #1: `std::iter::Iterator`
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `tree`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0061, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0061`.
[INFO] [stderr] error: could not compile `tree`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "92a5414e75172aae90a5e2b8f660400ef5dc2b6dcd4b5ae3893f95e15f030b35"`
[INFO] running `"docker" "rm" "-f" "92a5414e75172aae90a5e2b8f660400ef5dc2b6dcd4b5ae3893f95e15f030b35"`
[INFO] [stdout] 92a5414e75172aae90a5e2b8f660400ef5dc2b6dcd4b5ae3893f95e15f030b35