[INFO] fetching crate sorted-collections 0.0.8...
[INFO] checking sorted-collections-0.0.8 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate sorted-collections 0.0.8 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sorted-collections 0.0.8 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sorted-collections 0.0.8
[INFO] finished tweaking crates.io crate sorted-collections 0.0.8
[INFO] tweaked toml for crates.io crate sorted-collections 0.0.8 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 069aaeefaaff616cbaa1a9ca0281a19069eae1546324d95523c4b86410b6904a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "069aaeefaaff616cbaa1a9ca0281a19069eae1546324d95523c4b86410b6904a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "069aaeefaaff616cbaa1a9ca0281a19069eae1546324d95523c4b86410b6904a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "069aaeefaaff616cbaa1a9ca0281a19069eae1546324d95523c4b86410b6904a", kill_on_drop: false }`
[INFO] [stdout] 069aaeefaaff616cbaa1a9ca0281a19069eae1546324d95523c4b86410b6904a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bb4b03b5d9d56ff7b16e31b048ba9c25dcc16ec23e77dc1e84083bbbc2b3b23
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2bb4b03b5d9d56ff7b16e31b048ba9c25dcc16ec23e77dc1e84083bbbc2b3b23", kill_on_drop: false }`
[INFO] [stderr]     Checking sorted-collections v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:333:18
[INFO] [stdout]      |
[INFO] [stdout] 333  |             self.range(Included(key), Unbounded).map(|(k, _)| k).min()
[INFO] [stdout]      |                  ^^^^^ -------------  --------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:350:18
[INFO] [stdout]      |
[INFO] [stdout] 350  |             self.range(Unbounded, Included(key)).map(|(k, _)| k).max()
[INFO] [stdout]      |                  ^^^^^ ---------  ------------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:367:18
[INFO] [stdout]      |
[INFO] [stdout] 367  |             self.range(Excluded(key), Unbounded).map(|(k, _)| k).min()
[INFO] [stdout]      |                  ^^^^^ -------------  --------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:384:18
[INFO] [stdout]      |
[INFO] [stdout] 384  |             self.range(Unbounded, Excluded(key)).map(|(k, _)| k).max()
[INFO] [stdout]      |                  ^^^^^ ---------  ------------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:401:37
[INFO] [stdout]      |
[INFO] [stdout] 401  |             let keys: Vec<K> = self.range(from_key, to_key).map(|(k, _)| k.clone()).collect();
[INFO] [stdout]      |                                     ^^^^^ --------  ------ supplied 2 arguments
[INFO] [stdout]      |                                     |
[INFO] [stdout]      |                                     expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:333:18
[INFO] [stdout]      |
[INFO] [stdout] 333  |             self.range(Included(key), Unbounded).map(|(k, _)| k).min()
[INFO] [stdout]      |                  ^^^^^ -------------  --------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:350:18
[INFO] [stdout]      |
[INFO] [stdout] 350  |             self.range(Unbounded, Included(key)).map(|(k, _)| k).max()
[INFO] [stdout]      |                  ^^^^^ ---------  ------------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:367:18
[INFO] [stdout]      |
[INFO] [stdout] 367  |             self.range(Excluded(key), Unbounded).map(|(k, _)| k).min()
[INFO] [stdout]      |                  ^^^^^ -------------  --------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:384:18
[INFO] [stdout]      |
[INFO] [stdout] 384  |             self.range(Unbounded, Excluded(key)).map(|(k, _)| k).max()
[INFO] [stdout]      |                  ^^^^^ ---------  ------------- supplied 2 arguments
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/sortedmap.rs:401:37
[INFO] [stdout]      |
[INFO] [stdout] 401  |             let keys: Vec<K> = self.range(from_key, to_key).map(|(k, _)| k.clone()).collect();
[INFO] [stdout]      |                                     ^^^^^ --------  ------ supplied 2 arguments
[INFO] [stdout]      |                                     |
[INFO] [stdout]      |                                     expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 416  |     sortedmap_impl!(BTreeMap<K, V>, BTreeMapRangeRemove, BTreeMapRangeRemove<K, V>);
[INFO] [stdout]      |     -------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:278:24
[INFO] [stdout]     |
[INFO] [stdout] 278 |             match self.first().cloned() {
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::first(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::first`
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:295:24
[INFO] [stdout]     |
[INFO] [stdout] 295 |             match self.last().cloned() {
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::last(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::last`
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:308:18
[INFO] [stdout]     |
[INFO] [stdout] 308 |             self.range(Included(elem), Unbounded).min()
[INFO] [stdout]     |                  ^^^^^ --------------  --------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:325:18
[INFO] [stdout]     |
[INFO] [stdout] 325 |             self.range(Unbounded, Included(elem)).max()
[INFO] [stdout]     |                  ^^^^^ ---------  -------------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:342:18
[INFO] [stdout]     |
[INFO] [stdout] 342 |             self.range(Excluded(elem), Unbounded).min()
[INFO] [stdout]     |                  ^^^^^ --------------  --------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:359:18
[INFO] [stdout]     |
[INFO] [stdout] 359 |             self.range(Unbounded, Excluded(elem)).max()
[INFO] [stdout]     |                  ^^^^^ ---------  -------------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:376:34
[INFO] [stdout]     |
[INFO] [stdout] 376 |             let ret: $typ = self.range(from_elem, to_elem).cloned().collect();
[INFO] [stdout]     |                                  ^^^^^ ---------  ------- supplied 2 arguments
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sorted-collections`
[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] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:278:24
[INFO] [stdout]     |
[INFO] [stdout] 278 |             match self.first().cloned() {
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::first(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::first`
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:295:24
[INFO] [stdout]     |
[INFO] [stdout] 295 |             match self.last().cloned() {
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::last(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::last`
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:308:18
[INFO] [stdout]     |
[INFO] [stdout] 308 |             self.range(Included(elem), Unbounded).min()
[INFO] [stdout]     |                  ^^^^^ --------------  --------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:325:18
[INFO] [stdout]     |
[INFO] [stdout] 325 |             self.range(Unbounded, Included(elem)).max()
[INFO] [stdout]     |                  ^^^^^ ---------  -------------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:342:18
[INFO] [stdout]     |
[INFO] [stdout] 342 |             self.range(Excluded(elem), Unbounded).min()
[INFO] [stdout]     |                  ^^^^^ --------------  --------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:359:18
[INFO] [stdout]     |
[INFO] [stdout] 359 |             self.range(Unbounded, Excluded(elem)).max()
[INFO] [stdout]     |                  ^^^^^ ---------  -------------- supplied 2 arguments
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> src/sortedset.rs:376:34
[INFO] [stdout]     |
[INFO] [stdout] 376 |             let ret: $typ = self.range(from_elem, to_elem).cloned().collect();
[INFO] [stdout]     |                                  ^^^^^ ---------  ------- supplied 2 arguments
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 393 |     sortedset_impl!(BTreeSet<T>, BTreeSetRangeRemove, BTreeSetRangeRemove<T>);
[INFO] [stdout]     |     -------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:422:24
[INFO] [stdout]     |
[INFO] [stdout] 422 |         assert_eq!(set.first().unwrap(), &1u32);
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::first(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/sortedset.rs:435:24
[INFO] [stdout]     |
[INFO] [stdout] 435 |         assert_eq!(set.last().unwrap(), &5u32);
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `SortedSetExt::last(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(map_first_last)]` to the crate attributes to enable `BTreeSet::<T>::last`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2bb4b03b5d9d56ff7b16e31b048ba9c25dcc16ec23e77dc1e84083bbbc2b3b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb4b03b5d9d56ff7b16e31b048ba9c25dcc16ec23e77dc1e84083bbbc2b3b23", kill_on_drop: false }`
[INFO] [stdout] 2bb4b03b5d9d56ff7b16e31b048ba9c25dcc16ec23e77dc1e84083bbbc2b3b23