[INFO] fetching crate timely 0.12.0... [INFO] checking timely-0.12.0 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422 [INFO] extracting crate timely 0.12.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate timely 0.12.0 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate timely 0.12.0 [INFO] finished tweaking crates.io crate timely 0.12.0 [INFO] tweaked toml for crates.io crate timely 0.12.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate timely 0.12.0 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded abomonation_derive v0.5.0 [INFO] [stderr] Downloaded timely_logging v0.12.0 [INFO] [stderr] Downloaded timely_bytes v0.12.0 [INFO] [stderr] Downloaded abomonation v0.7.3 [INFO] [stderr] Downloaded futures-core v0.3.13 [INFO] [stderr] Downloaded timely_communication v0.12.0 [INFO] [stderr] Downloaded syn v1.0.63 [INFO] [stderr] Downloaded futures-util v0.3.13 [INFO] [stderr] Downloaded futures-macro v0.3.13 [INFO] [stderr] Downloaded futures-task v0.3.13 [INFO] [stderr] Downloaded bincode v1.3.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fefb6c529c0458a6cb5e81d69606ba4f731ba6179ff10fb62a7732350b20f604 [INFO] running `Command { std: "docker" "start" "-a" "fefb6c529c0458a6cb5e81d69606ba4f731ba6179ff10fb62a7732350b20f604", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fefb6c529c0458a6cb5e81d69606ba4f731ba6179ff10fb62a7732350b20f604", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fefb6c529c0458a6cb5e81d69606ba4f731ba6179ff10fb62a7732350b20f604", kill_on_drop: false }` [INFO] [stdout] fefb6c529c0458a6cb5e81d69606ba4f731ba6179ff10fb62a7732350b20f604 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 517e882799bf8bd6e8c3a731b5361983031430a61ab0c341d377dcd475dc7c61 [INFO] running `Command { std: "docker" "start" "-a" "517e882799bf8bd6e8c3a731b5361983031430a61ab0c341d377dcd475dc7c61", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling syn v1.0.63 [INFO] [stderr] Compiling serde_derive v1.0.124 [INFO] [stderr] Compiling serde v1.0.124 [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking timely_bytes v0.12.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking futures-core v0.3.13 [INFO] [stderr] Checking abomonation v0.7.3 [INFO] [stderr] Checking timely_logging v0.12.0 [INFO] [stderr] Checking futures-task v0.3.13 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling abomonation_derive v0.5.0 [INFO] [stderr] Compiling futures-macro v0.3.13 [INFO] [stderr] Checking futures-util v0.3.13 [INFO] [stderr] Checking timely_communication v0.12.0 [INFO] [stderr] Checking timely v0.12.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/synchronization/sequence.rs:160:29 [INFO] [stdout] | [INFO] [stdout] 160 | let mut activator = activator_borrow.as_mut().unwrap(); [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] warning: variable does not need to be mutable [INFO] [stdout] --> src/synchronization/sequence.rs:191:29 [INFO] [stdout] | [INFO] [stdout] 191 | let mut activator = activator_borrow.as_mut().unwrap(); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/progress/frontier.rs:511:36 [INFO] [stdout] | [INFO] [stdout] 511 | frontier: self.frontier.clone(), [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/synchronization/sequence.rs:160:29 [INFO] [stdout] | [INFO] [stdout] 160 | let mut activator = activator_borrow.as_mut().unwrap(); [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] warning: variable does not need to be mutable [INFO] [stdout] --> src/synchronization/sequence.rs:191:29 [INFO] [stdout] | [INFO] [stdout] 191 | let mut activator = activator_borrow.as_mut().unwrap(); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `field` is never read [INFO] [stdout] --> examples/rc.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct Test { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 11 | field: Rc, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Test` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/progress/frontier.rs:511:36 [INFO] [stdout] | [INFO] [stdout] 511 | frontier: self.frontier.clone(), [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.77s [INFO] running `Command { std: "docker" "inspect" "517e882799bf8bd6e8c3a731b5361983031430a61ab0c341d377dcd475dc7c61", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "517e882799bf8bd6e8c3a731b5361983031430a61ab0c341d377dcd475dc7c61", kill_on_drop: false }` [INFO] [stdout] 517e882799bf8bd6e8c3a731b5361983031430a61ab0c341d377dcd475dc7c61