[INFO] fetching crate median 0.3.2... [INFO] checking median-0.3.2 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] extracting crate median 0.3.2 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate median 0.3.2 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate median 0.3.2 [INFO] finished tweaking crates.io crate median 0.3.2 [INFO] tweaked toml for crates.io crate median 0.3.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 18 packages to latest compatible versions [INFO] [stderr] Adding arraydeque v0.4.5 (available: v0.5.1) [INFO] [stderr] Adding generic-array v0.14.7 (available: v1.1.0) [INFO] [stderr] Adding missing_mpl v0.1.2 (available: v0.2.0) [INFO] [stderr] Adding noisy_float v0.1.15 (available: v0.2.0) [INFO] [stderr] Adding rand v0.4.6 (available: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (available: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (available: v0.6.4) [INFO] [stderr] Adding rdrand v0.4.0 (available: v0.8.3) [INFO] [stderr] Adding strsim v0.8.0 (available: v0.11.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rand v0.4.6 [INFO] [stderr] Downloaded noisy_float v0.1.15 [INFO] [stderr] Downloaded arraydeque v0.4.5 [INFO] [stderr] Downloaded missing_mpl v0.1.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ec20abcf78d6948d94c0facecc9c876199666967bcb6eb6672d099dd852ed5b0 [INFO] running `Command { std: "docker" "start" "-a" "ec20abcf78d6948d94c0facecc9c876199666967bcb6eb6672d099dd852ed5b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ec20abcf78d6948d94c0facecc9c876199666967bcb6eb6672d099dd852ed5b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec20abcf78d6948d94c0facecc9c876199666967bcb6eb6672d099dd852ed5b0", kill_on_drop: false }` [INFO] [stdout] ec20abcf78d6948d94c0facecc9c876199666967bcb6eb6672d099dd852ed5b0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6ac67b2dce9193dbd5fc1f060cb6fac7a11bab4b4ea80e8ed703403b31395167 [INFO] running `Command { std: "docker" "start" "-a" "6ac67b2dce9193dbd5fc1f060cb6fac7a11bab4b4ea80e8ed703403b31395167", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling arraydeque v0.4.5 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking noisy_float v0.1.15 [INFO] [stderr] Checking median v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition value: `flame_it` [INFO] [stdout] --> benches/main.rs:44:16 [INFO] [stdout] | [INFO] [stdout] 44 | #[cfg_attr(feature = "flame_it", flame)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `missing_mpl`, `nightly`, and `std` [INFO] [stdout] = help: consider adding `flame_it` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `flame_it` [INFO] [stdout] --> benches/main.rs:57:16 [INFO] [stdout] | [INFO] [stdout] 57 | #[cfg_attr(feature = "flame_it", flame)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `missing_mpl`, `nightly`, and `std` [INFO] [stdout] = help: consider adding `flame_it` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> benches/main.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | let mut aux_buffer = mem::MaybeUninit::::uninit(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0133]: call to unsafe function `MaybeUninit::::assume_init` is unsafe and requires unsafe function or block [INFO] [stdout] --> benches/main.rs:49:30 [INFO] [stdout] | [INFO] [stdout] 49 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function [INFO] [stdout] | [INFO] [stdout] = note: consult the function's documentation for information on how to avoid undefined behavior [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0507]: cannot move out of `self.aux_buffer` which is behind a mutable reference [INFO] [stdout] --> benches/main.rs:49:30 [INFO] [stdout] | [INFO] [stdout] 49 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ^^^^^^^^^^^^^^^ ------------- `self.aux_buffer` moved due to this method call [INFO] [stdout] | | [INFO] [stdout] | move occurs because `self.aux_buffer` has type `MaybeUninit`, which does not implement the `Copy` trait [INFO] [stdout] | [INFO] [stdout] note: `MaybeUninit::::assume_init` takes ownership of the receiver `self`, which moves `self.aux_buffer` [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/mem/maybe_uninit.rs:630:37 [INFO] [stdout] help: you could `clone` the value and consume it, if the `A: Copy` trait bound could be satisfied [INFO] [stdout] | [INFO] [stdout] 49 | let slice = &mut as Clone>::clone(&self.aux_buffer).assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ++++++++++++++++++++++++++++++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> benches/main.rs:49:30 [INFO] [stdout] | [INFO] [stdout] 49 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - temporary value is freed at the end of this statement [INFO] [stdout] | | [INFO] [stdout] | creates a temporary value which is freed while still in use [INFO] [stdout] 50 | for (index, item) in self.buffer.iter().enumerate() { [INFO] [stdout] 51 | slice[index] = item.clone(); [INFO] [stdout] | ------------ borrow later used here [INFO] [stdout] | [INFO] [stdout] = note: consider using a `let` binding to create a longer lived value [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0133]: call to unsafe function `MaybeUninit::::assume_init` is unsafe and requires unsafe function or block [INFO] [stdout] --> benches/main.rs:79:26 [INFO] [stdout] | [INFO] [stdout] 79 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function [INFO] [stdout] | [INFO] [stdout] = note: consult the function's documentation for information on how to avoid undefined behavior [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0507]: cannot move out of `self.aux_buffer` which is behind a mutable reference [INFO] [stdout] --> benches/main.rs:79:26 [INFO] [stdout] | [INFO] [stdout] 79 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ^^^^^^^^^^^^^^^ ------------- `self.aux_buffer` moved due to this method call [INFO] [stdout] | | [INFO] [stdout] | move occurs because `self.aux_buffer` has type `MaybeUninit`, which does not implement the `Copy` trait [INFO] [stdout] | [INFO] [stdout] note: `MaybeUninit::::assume_init` takes ownership of the receiver `self`, which moves `self.aux_buffer` [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/mem/maybe_uninit.rs:630:37 [INFO] [stdout] help: you could `clone` the value and consume it, if the `A: Copy` trait bound could be satisfied [INFO] [stdout] | [INFO] [stdout] 79 | let slice = &mut as Clone>::clone(&self.aux_buffer).assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ++++++++++++++++++++++++++++++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0515]: cannot return value referencing temporary value [INFO] [stdout] --> benches/main.rs:81:13 [INFO] [stdout] | [INFO] [stdout] 79 | let slice = &mut self.aux_buffer.assume_init().as_mut_slice()[0..size]; [INFO] [stdout] | ----------------------------- temporary value created here [INFO] [stdout] 80 | if low == high { [INFO] [stdout] 81 | &slice[low] [INFO] [stdout] | ^^^^^^^^^^^ returns a value referencing data owned by the current function [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 6 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0133, E0507, E0515, E0716. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0133`. [INFO] [stdout] [INFO] [stderr] error: could not compile `median` (bench "main") due to 7 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6ac67b2dce9193dbd5fc1f060cb6fac7a11bab4b4ea80e8ed703403b31395167", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ac67b2dce9193dbd5fc1f060cb6fac7a11bab4b4ea80e8ed703403b31395167", kill_on_drop: false }` [INFO] [stdout] 6ac67b2dce9193dbd5fc1f060cb6fac7a11bab4b4ea80e8ed703403b31395167