[INFO] cloning repository https://github.com/fprasx/arcs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fprasx/arcs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Farcs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Farcs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 69c21e0d023a84220b7b11a1239509c31de85027 [INFO] checking fprasx/arcs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffprasx%2Farcs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fprasx/arcs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fprasx/arcs [INFO] finished tweaking git repo https://github.com/fprasx/arcs [INFO] tweaked toml for git repo https://github.com/fprasx/arcs written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/fprasx/arcs already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded haphazard v0.1.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5c0249ce4187ce5e70362b329624f97474591891da64cfc3f9972b65e52ced11 [INFO] running `Command { std: "docker" "start" "-a" "5c0249ce4187ce5e70362b329624f97474591891da64cfc3f9972b65e52ced11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5c0249ce4187ce5e70362b329624f97474591891da64cfc3f9972b65e52ced11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c0249ce4187ce5e70362b329624f97474591891da64cfc3f9972b65e52ced11", kill_on_drop: false }` [INFO] [stdout] 5c0249ce4187ce5e70362b329624f97474591891da64cfc3f9972b65e52ced11 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3114f1b30de025fc0c6b0edc1d074cb1140e8c4b9d2c1f9634bb43c87f1de253 [INFO] running `Command { std: "docker" "start" "-a" "3114f1b30de025fc0c6b0edc1d074cb1140e8c4b9d2c1f9634bb43c87f1de253", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.8 [INFO] [stderr] Compiling crossbeam-queue v0.3.5 [INFO] [stderr] Checking haphazard v0.1.4 [INFO] [stderr] Checking unlocked v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `haphazard` is imported redundantly [INFO] [stdout] --> src/sealed.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | use haphazard; [INFO] [stdout] | ^^^^^^^^^ the item `haphazard` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `haphazard` is imported redundantly [INFO] [stdout] --> src/hazptr_practice.rs:6:17 [INFO] [stdout] | [INFO] [stdout] 6 | use haphazard::{self, raw::Pointer}; [INFO] [stdout] | ^^^^ the item `haphazard` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `bench_black_box` has been stable since 1.66.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(bench_black_box)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `haphazard` is imported redundantly [INFO] [stdout] --> src/sealed.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | use haphazard; [INFO] [stdout] | ^^^^^^^^^ the item `haphazard` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Ordering` is imported redundantly [INFO] [stdout] --> src/sealed.rs:525:42 [INFO] [stdout] | [INFO] [stdout] 523 | use super::*; [INFO] [stdout] | -------- the item `Ordering` is already imported here [INFO] [stdout] 524 | extern crate std; [INFO] [stdout] 525 | use std::sync::atomic::{AtomicIsize, Ordering}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `bench_black_box` has been stable since 1.66.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(bench_black_box)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:269:17 [INFO] [stdout] | [INFO] [stdout] 269 | Box::from_raw(next_desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 269 | let _ = Box::from_raw(next_desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:341:17 [INFO] [stdout] | [INFO] [stdout] 341 | Box::from_raw(next_desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 341 | let _ = Box::from_raw(next_desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:499:13 [INFO] [stdout] | [INFO] [stdout] 499 | Box::from_raw(desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 499 | let _ = Box::from_raw(desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:510:13 [INFO] [stdout] | [INFO] [stdout] 510 | / Box::from_raw( [INFO] [stdout] 511 | | self.pending [INFO] [stdout] 512 | | .swap_ptr(ptr::null_mut()) [INFO] [stdout] 513 | | .unwrap() [INFO] [stdout] 514 | | .into_inner() [INFO] [stdout] 515 | | .as_ptr(), [INFO] [stdout] 516 | | ); [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 510 | let _ = Box::from_raw( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `leaky::alloc::boxed::Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:269:17 [INFO] [stdout] | [INFO] [stdout] 269 | Box::from_raw(next_desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 269 | let _ = Box::from_raw(next_desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `leaky::alloc::boxed::Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:341:17 [INFO] [stdout] | [INFO] [stdout] 341 | Box::from_raw(next_desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 341 | let _ = Box::from_raw(next_desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `leaky::alloc::boxed::Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:499:13 [INFO] [stdout] | [INFO] [stdout] 499 | Box::from_raw(desc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 499 | let _ = Box::from_raw(desc); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `leaky::alloc::boxed::Box::::from_raw` that must be used [INFO] [stdout] --> src/sealed.rs:510:13 [INFO] [stdout] | [INFO] [stdout] 510 | / Box::from_raw( [INFO] [stdout] 511 | | self.pending [INFO] [stdout] 512 | | .swap_ptr(ptr::null_mut()) [INFO] [stdout] 513 | | .unwrap() [INFO] [stdout] 514 | | .into_inner() [INFO] [stdout] 515 | | .as_ptr(), [INFO] [stdout] 516 | | ); [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 510 | let _ = Box::from_raw( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.29s [INFO] running `Command { std: "docker" "inspect" "3114f1b30de025fc0c6b0edc1d074cb1140e8c4b9d2c1f9634bb43c87f1de253", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3114f1b30de025fc0c6b0edc1d074cb1140e8c4b9d2c1f9634bb43c87f1de253", kill_on_drop: false }` [INFO] [stdout] 3114f1b30de025fc0c6b0edc1d074cb1140e8c4b9d2c1f9634bb43c87f1de253