[INFO] fetching crate vec-option 0.3.0... [INFO] checking vec-option-0.3.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920 [INFO] extracting crate vec-option 0.3.0 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate vec-option 0.3.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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-6/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] 84c4d9233a7221a2a6e6c5793a9eb453e578a18563536e6ce08a767177f5d338 [INFO] running `Command { std: "docker" "start" "-a" "84c4d9233a7221a2a6e6c5793a9eb453e578a18563536e6ce08a767177f5d338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "84c4d9233a7221a2a6e6c5793a9eb453e578a18563536e6ce08a767177f5d338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "84c4d9233a7221a2a6e6c5793a9eb453e578a18563536e6ce08a767177f5d338", kill_on_drop: false }` [INFO] [stdout] 84c4d9233a7221a2a6e6c5793a9eb453e578a18563536e6ce08a767177f5d338 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 74c6a78ccc39ecd4c6f1c55fcbe01182d39b651c7210b1c277a3044e5a1fefd4 [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" "74c6a78ccc39ecd4c6f1c55fcbe01182d39b651c7210b1c277a3044e5a1fefd4", kill_on_drop: false }` [INFO] [stderr] Checking 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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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: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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::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 [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::::unwrap_unchecked` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.76s [INFO] running `Command { std: "docker" "inspect" "74c6a78ccc39ecd4c6f1c55fcbe01182d39b651c7210b1c277a3044e5a1fefd4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "74c6a78ccc39ecd4c6f1c55fcbe01182d39b651c7210b1c277a3044e5a1fefd4", kill_on_drop: false }` [INFO] [stdout] 74c6a78ccc39ecd4c6f1c55fcbe01182d39b651c7210b1c277a3044e5a1fefd4