[INFO] fetching crate moving_gc_arena 0.3.2... [INFO] checking moving_gc_arena-0.3.2 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035 [INFO] extracting crate moving_gc_arena 0.3.2 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate moving_gc_arena 0.3.2 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate moving_gc_arena 0.3.2 [INFO] finished tweaking crates.io crate moving_gc_arena 0.3.2 [INFO] tweaked toml for crates.io crate moving_gc_arena 0.3.2 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate crates.io crate moving_gc_arena 0.3.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1e766c4a6885c3b76becf94d0e7d16b400aca53bc70a7411d4b148aca185a75e [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" "1e766c4a6885c3b76becf94d0e7d16b400aca53bc70a7411d4b148aca185a75e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1e766c4a6885c3b76becf94d0e7d16b400aca53bc70a7411d4b148aca185a75e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e766c4a6885c3b76becf94d0e7d16b400aca53bc70a7411d4b148aca185a75e", kill_on_drop: false }` [INFO] [stdout] 1e766c4a6885c3b76becf94d0e7d16b400aca53bc70a7411d4b148aca185a75e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--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] 203ddabd08fe7a543b1dcacb91f1f2aa6eb7221ea8be79f23e4c67bb502282d8 [INFO] running `Command { std: "docker" "start" "-a" "203ddabd08fe7a543b1dcacb91f1f2aa6eb7221ea8be79f23e4c67bb502282d8", kill_on_drop: false }` [INFO] [stderr] Checking moving_gc_arena v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib.rs:772:66 [INFO] [stdout] | [INFO] [stdout] 772 | let mut handle = |mut s: Entry| -> Option<(Entry)> { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:634:13 [INFO] [stdout] | [INFO] [stdout] 634 | let mut rt2 = rt1.clone(); [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/lib.rs:842:13 [INFO] [stdout] | [INFO] [stdout] 842 | let mut i = 0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.17s [INFO] running `Command { std: "docker" "inspect" "203ddabd08fe7a543b1dcacb91f1f2aa6eb7221ea8be79f23e4c67bb502282d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "203ddabd08fe7a543b1dcacb91f1f2aa6eb7221ea8be79f23e4c67bb502282d8", kill_on_drop: false }` [INFO] [stdout] 203ddabd08fe7a543b1dcacb91f1f2aa6eb7221ea8be79f23e4c67bb502282d8