[INFO] fetching crate sorted-collections 0.0.8...
[INFO] checking sorted-collections-0.0.8 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate sorted-collections 0.0.8 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate sorted-collections 0.0.8 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bb9749b44750bcc4118379b1e94801226c2d29bf9994eeb1a64051baf189d462
[INFO] running `Command { std: "docker" "start" "-a" "bb9749b44750bcc4118379b1e94801226c2d29bf9994eeb1a64051baf189d462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb9749b44750bcc4118379b1e94801226c2d29bf9994eeb1a64051baf189d462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb9749b44750bcc4118379b1e94801226c2d29bf9994eeb1a64051baf189d462", kill_on_drop: false }`
[INFO] [stdout] bb9749b44750bcc4118379b1e94801226c2d29bf9994eeb1a64051baf189d462
[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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cd886a572290f2f14318095e0b40db2d069f9ed5ac26d8ca70853235fb1df81
[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" "2cd886a572290f2f14318095e0b40db2d069f9ed5ac26d8ca70853235fb1df81", kill_on_drop: false }`
[INFO] [stderr]     Checking sorted-collections v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(collections, core)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(collections, core)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(test, feature(test))] #[cfg(test)] extern crate test;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[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: 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: 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: 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: 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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method 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 method 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 `sortedset::SortedSetExt::first(...)` to keep using the current method
[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: a method 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 method 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 `sortedset::SortedSetExt::last(...)` to keep using the current method
[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: 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: 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: 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: 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: 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: 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: 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 11 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sorted-collections`.
[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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[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: a method 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 method 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 `sortedset::SortedSetExt::first(...)` to keep using the current method
[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: a method 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 method 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 `sortedset::SortedSetExt::last(...)` to keep using the current method
[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: 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: 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: 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: 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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method 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 method 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 `sortedset::SortedSetExt::first(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method 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 method 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 `sortedset::SortedSetExt::last(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2cd886a572290f2f14318095e0b40db2d069f9ed5ac26d8ca70853235fb1df81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd886a572290f2f14318095e0b40db2d069f9ed5ac26d8ca70853235fb1df81", kill_on_drop: false }`
[INFO] [stdout] 2cd886a572290f2f14318095e0b40db2d069f9ed5ac26d8ca70853235fb1df81
