[INFO] fetching crate possibly_uninit 0.1.0-preview... [INFO] testing possibly_uninit-0.1.0-preview against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296 [INFO] extracting crate possibly_uninit 0.1.0-preview into /workspace/builds/worker-5/source [INFO] validating manifest of crates.io crate possibly_uninit 0.1.0-preview on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate possibly_uninit 0.1.0-preview [INFO] finished tweaking crates.io crate possibly_uninit 0.1.0-preview [INFO] tweaked toml for crates.io crate possibly_uninit 0.1.0-preview written to /workspace/builds/worker-5/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c4173e75f2b238580a22f0e85eba2d25b035543d46cc8c6b3e7d2765ff45d806 [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" "c4173e75f2b238580a22f0e85eba2d25b035543d46cc8c6b3e7d2765ff45d806", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c4173e75f2b238580a22f0e85eba2d25b035543d46cc8c6b3e7d2765ff45d806", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c4173e75f2b238580a22f0e85eba2d25b035543d46cc8c6b3e7d2765ff45d806", kill_on_drop: false }` [INFO] [stdout] c4173e75f2b238580a22f0e85eba2d25b035543d46cc8c6b3e7d2765ff45d806 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2e592a1ed3b9f5b52d9b4e4c99c2f5af05b48fad228322c607c91241bcdf19f7 [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" "2e592a1ed3b9f5b52d9b4e4c99c2f5af05b48fad228322c607c91241bcdf19f7", kill_on_drop: false }` [INFO] [stderr] Compiling possibly_uninit v0.1.0-preview (/opt/rustwide/workdir) [INFO] [stdout] warning: a method with this name may be added to the standard library in the future [INFO] [stdout] --> src/lib.rs:126:20 [INFO] [stdout] | [INFO] [stdout] 126 | self.0.assume_init_mut() [INFO] [stdout] | ^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [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/lib.rs:138:20 [INFO] [stdout] | [INFO] [stdout] 138 | self.0.assume_init_mut() [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.48s [INFO] running `Command { std: "docker" "inspect" "2e592a1ed3b9f5b52d9b4e4c99c2f5af05b48fad228322c607c91241bcdf19f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e592a1ed3b9f5b52d9b4e4c99c2f5af05b48fad228322c607c91241bcdf19f7", kill_on_drop: false }` [INFO] [stdout] 2e592a1ed3b9f5b52d9b4e4c99c2f5af05b48fad228322c607c91241bcdf19f7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", 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] ea804675945e700611eb87c9cf6ef892199cd28aaa26f53b647164e8008fa2c4 [INFO] running `Command { std: "docker" "start" "-a" "ea804675945e700611eb87c9cf6ef892199cd28aaa26f53b647164e8008fa2c4", kill_on_drop: false }` [INFO] [stderr] Compiling possibly_uninit v0.1.0-preview (/opt/rustwide/workdir) [INFO] [stdout] warning: a method with this name may be added to the standard library in the future [INFO] [stdout] --> src/lib.rs:126:20 [INFO] [stdout] | [INFO] [stdout] 126 | self.0.assume_init_mut() [INFO] [stdout] | ^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [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/lib.rs:138:20 [INFO] [stdout] | [INFO] [stdout] 138 | self.0.assume_init_mut() [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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/lib.rs:126:20 [INFO] [stdout] | [INFO] [stdout] 126 | self.0.assume_init_mut() [INFO] [stdout] | ^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [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/lib.rs:138:20 [INFO] [stdout] | [INFO] [stdout] 138 | self.0.assume_init_mut() [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 [INFO] [stdout] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.77s [INFO] running `Command { std: "docker" "inspect" "ea804675945e700611eb87c9cf6ef892199cd28aaa26f53b647164e8008fa2c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea804675945e700611eb87c9cf6ef892199cd28aaa26f53b647164e8008fa2c4", kill_on_drop: false }` [INFO] [stdout] ea804675945e700611eb87c9cf6ef892199cd28aaa26f53b647164e8008fa2c4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", 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] e2b3c29ae0c12207f0df8f09a80757981ca18a76b0919152617d7594897b88f4 [INFO] running `Command { std: "docker" "start" "-a" "e2b3c29ae0c12207f0df8f09a80757981ca18a76b0919152617d7594897b88f4", kill_on_drop: false }` [INFO] [stderr] warning: a method with this name may be added to the standard library in the future [INFO] [stderr] --> src/lib.rs:126:20 [INFO] [stderr] | [INFO] [stderr] 126 | self.0.assume_init_mut() [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stderr] = warning: once this method 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 [INFO] [stderr] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stderr] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stderr] [INFO] [stderr] warning: a method with this name may be added to the standard library in the future [INFO] [stderr] --> src/lib.rs:138:20 [INFO] [stderr] | [INFO] [stderr] 138 | self.0.assume_init_mut() [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: once this method 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 [INFO] [stderr] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stderr] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: a method with this name may be added to the standard library in the future [INFO] [stderr] --> src/lib.rs:126:20 [INFO] [stderr] | [INFO] [stderr] 126 | self.0.assume_init_mut() [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stderr] = warning: once this method 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 [INFO] [stderr] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stderr] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stderr] [INFO] [stderr] warning: a method with this name may be added to the standard library in the future [INFO] [stderr] --> src/lib.rs:138:20 [INFO] [stderr] | [INFO] [stderr] 138 | self.0.assume_init_mut() [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: once this method 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 [INFO] [stderr] = help: call with fully qualified syntax `BorrowUninitMut::assume_init_mut(...)` to keep using the current method [INFO] [stderr] = help: add `#![feature(maybe_uninit_ref)]` to the crate attributes to enable `MaybeUninit::::assume_init_mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/possibly_uninit-6e5464790a65e45f [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test slice::cursor::test::arr ... ok [INFO] [stdout] test slice::cursor::test::slice ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests possibly_uninit [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/slice/mod.rs - slice::MaybeUninitSlice (line 51) ... ok [INFO] [stdout] test src/lib.rs - RefMut (line 52) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e2b3c29ae0c12207f0df8f09a80757981ca18a76b0919152617d7594897b88f4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2b3c29ae0c12207f0df8f09a80757981ca18a76b0919152617d7594897b88f4", kill_on_drop: false }` [INFO] [stdout] e2b3c29ae0c12207f0df8f09a80757981ca18a76b0919152617d7594897b88f4