[INFO] fetching crate vec-option 0.3.0...
[INFO] testing vec-option-0.3.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate vec-option 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate vec-option 0.3.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vec-option 0.3.0
[INFO] finished tweaking crates.io crate vec-option 0.3.0
[INFO] tweaked toml for crates.io crate vec-option 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fd5698c29e05171ae1f6d4851ef309dc1c7422797d5064bd288820e0bff07c8
[INFO] running `Command { std: "docker" "start" "-a" "7fd5698c29e05171ae1f6d4851ef309dc1c7422797d5064bd288820e0bff07c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fd5698c29e05171ae1f6d4851ef309dc1c7422797d5064bd288820e0bff07c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fd5698c29e05171ae1f6d4851ef309dc1c7422797d5064bd288820e0bff07c8", kill_on_drop: false }`
[INFO] [stdout] 7fd5698c29e05171ae1f6d4851ef309dc1c7422797d5064bd288820e0bff07c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b640d5789b8c908f611344c81511fc988a7bb5b47a45096141913573363c1f4c
[INFO] running `Command { std: "docker" "start" "-a" "b640d5789b8c908f611344c81511fc988a7bb5b47a45096141913573363c1f4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec-option v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:379:40
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let data = self.data.pop().unwrap_unchecked();
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:885:41
[INFO] [stdout]     |
[INFO] [stdout] 885 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:904:45
[INFO] [stdout]     |
[INFO] [stdout] 904 |                 let data = self.data.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:916:46
[INFO] [stdout]     |
[INFO] [stdout] 916 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:955:41
[INFO] [stdout]     |
[INFO] [stdout] 955 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:968:41
[INFO] [stdout]     |
[INFO] [stdout] 968 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:979:46
[INFO] [stdout]     |
[INFO] [stdout] 979 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1008:41
[INFO] [stdout]      |
[INFO] [stdout] 1008 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1021:41
[INFO] [stdout]      |
[INFO] [stdout] 1021 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1032:46
[INFO] [stdout]      |
[INFO] [stdout] 1032 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "b640d5789b8c908f611344c81511fc988a7bb5b47a45096141913573363c1f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b640d5789b8c908f611344c81511fc988a7bb5b47a45096141913573363c1f4c", kill_on_drop: false }`
[INFO] [stdout] b640d5789b8c908f611344c81511fc988a7bb5b47a45096141913573363c1f4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35d3feb9c3554c46148e29786a05af9d38bc28ea23894d926f10df0cfd4b46e3
[INFO] running `Command { std: "docker" "start" "-a" "35d3feb9c3554c46148e29786a05af9d38bc28ea23894d926f10df0cfd4b46e3", kill_on_drop: false }`
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:379:40
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let data = self.data.pop().unwrap_unchecked();
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vec-option v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:885:41
[INFO] [stdout]     |
[INFO] [stdout] 885 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:904:45
[INFO] [stdout]     |
[INFO] [stdout] 904 |                 let data = self.data.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:916:46
[INFO] [stdout]     |
[INFO] [stdout] 916 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:955:41
[INFO] [stdout]     |
[INFO] [stdout] 955 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:968:41
[INFO] [stdout]     |
[INFO] [stdout] 968 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:979:46
[INFO] [stdout]     |
[INFO] [stdout] 979 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1008:41
[INFO] [stdout]      |
[INFO] [stdout] 1008 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1021:41
[INFO] [stdout]      |
[INFO] [stdout] 1021 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1032:46
[INFO] [stdout]      |
[INFO] [stdout] 1032 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[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/lib.rs:379:40
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let data = self.data.pop().unwrap_unchecked();
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:885:41
[INFO] [stdout]     |
[INFO] [stdout] 885 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:904:45
[INFO] [stdout]     |
[INFO] [stdout] 904 |                 let data = self.data.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:916:46
[INFO] [stdout]     |
[INFO] [stdout] 916 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:955:41
[INFO] [stdout]     |
[INFO] [stdout] 955 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:968:41
[INFO] [stdout]     |
[INFO] [stdout] 968 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:979:46
[INFO] [stdout]     |
[INFO] [stdout] 979 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1008:41
[INFO] [stdout]      |
[INFO] [stdout] 1008 |             let data = self.data.next().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1021:41
[INFO] [stdout]      |
[INFO] [stdout] 1021 |             let flag = self.flag.nth(n).unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[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/lib.rs:1032:46
[INFO] [stdout]      |
[INFO] [stdout] 1032 |             let data = self.data.next_back().unwrap_unchecked();
[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 `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stdout]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "35d3feb9c3554c46148e29786a05af9d38bc28ea23894d926f10df0cfd4b46e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35d3feb9c3554c46148e29786a05af9d38bc28ea23894d926f10df0cfd4b46e3", kill_on_drop: false }`
[INFO] [stdout] 35d3feb9c3554c46148e29786a05af9d38bc28ea23894d926f10df0cfd4b46e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2cfa72b650859bd4f1fb2344df1e34cc24244563f7aeeb7aded64d88ce30a035
[INFO] running `Command { std: "docker" "start" "-a" "2cfa72b650859bd4f1fb2344df1e34cc24244563f7aeeb7aded64d88ce30a035", kill_on_drop: false }`
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:379:40
[INFO] [stderr]     |
[INFO] [stderr] 379 |             let data = self.data.pop().unwrap_unchecked();
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:885:41
[INFO] [stderr]     |
[INFO] [stderr] 885 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:904:45
[INFO] [stderr]     |
[INFO] [stderr] 904 |                 let data = self.data.nth(n).unwrap_unchecked();
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:916:46
[INFO] [stderr]     |
[INFO] [stderr] 916 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:955:41
[INFO] [stderr]     |
[INFO] [stderr] 955 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:968:41
[INFO] [stderr]     |
[INFO] [stderr] 968 |             let flag = self.flag.nth(n).unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:979:46
[INFO] [stderr]     |
[INFO] [stderr] 979 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1008:41
[INFO] [stderr]      |
[INFO] [stderr] 1008 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]      |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1021:41
[INFO] [stderr]      |
[INFO] [stderr] 1021 |             let flag = self.flag.nth(n).unwrap_unchecked();
[INFO] [stderr]      |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1032:46
[INFO] [stderr]      |
[INFO] [stderr] 1032 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]      |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:379:40
[INFO] [stderr]     |
[INFO] [stderr] 379 |             let data = self.data.pop().unwrap_unchecked();
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:885:41
[INFO] [stderr]     |
[INFO] [stderr] 885 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:904:45
[INFO] [stderr]     |
[INFO] [stderr] 904 |                 let data = self.data.nth(n).unwrap_unchecked();
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:916:46
[INFO] [stderr]     |
[INFO] [stderr] 916 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:955:41
[INFO] [stderr]     |
[INFO] [stderr] 955 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:968:41
[INFO] [stderr]     |
[INFO] [stderr] 968 |             let flag = self.flag.nth(n).unwrap_unchecked();
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/lib.rs:979:46
[INFO] [stderr]     |
[INFO] [stderr] 979 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1008:41
[INFO] [stderr]      |
[INFO] [stderr] 1008 |             let data = self.data.next().unwrap_unchecked();
[INFO] [stderr]      |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1021:41
[INFO] [stderr]      |
[INFO] [stderr] 1021 |             let flag = self.flag.nth(n).unwrap_unchecked();
[INFO] [stderr]      |                                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]     --> src/lib.rs:1032:46
[INFO] [stderr]      |
[INFO] [stderr] 1032 |             let data = self.data.next_back().unwrap_unchecked();
[INFO] [stderr]      |                                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]      = help: call with fully qualified syntax `UnwrapUnchecked::unwrap_unchecked(...)` to keep using the current method
[INFO] [stderr]      = help: add `#![feature(option_result_unwrap_unchecked)]` to the crate attributes to enable `Option::<T>::unwrap_unchecked`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vec_option-05124ffbf224d3a7)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vec-option
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test ... ok
[INFO] [stdout] test bit_vec::bit_vec ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 108) ... ignored
[INFO] [stdout] test src/lib.rs - (line 66) ... ignored
[INFO] [stdout] test src/lib.rs - (line 79) ... ignored
[INFO] [stdout] test src/lib.rs - (line 54) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 87) ... ok
[INFO] [stdout] test src/lib.rs - (line 120) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2cfa72b650859bd4f1fb2344df1e34cc24244563f7aeeb7aded64d88ce30a035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cfa72b650859bd4f1fb2344df1e34cc24244563f7aeeb7aded64d88ce30a035", kill_on_drop: false }`
[INFO] [stdout] 2cfa72b650859bd4f1fb2344df1e34cc24244563f7aeeb7aded64d88ce30a035