[INFO] fetching crate concache 0.2.1... [INFO] checking concache-0.2.1 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470 [INFO] extracting crate concache 0.2.1 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate concache 0.2.1 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate concache 0.2.1 [INFO] finished tweaking crates.io crate concache 0.2.1 [INFO] tweaked toml for crates.io crate concache 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", 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] 3bd6b8fdabf09151664966880fd615100867535b72f7d4c9702d21cc7dae605d [INFO] running `Command { std: "docker" "start" "-a" "3bd6b8fdabf09151664966880fd615100867535b72f7d4c9702d21cc7dae605d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3bd6b8fdabf09151664966880fd615100867535b72f7d4c9702d21cc7dae605d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3bd6b8fdabf09151664966880fd615100867535b72f7d4c9702d21cc7dae605d", kill_on_drop: false }` [INFO] [stdout] 3bd6b8fdabf09151664966880fd615100867535b72f7d4c9702d21cc7dae605d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ef90ced1113253b1c6d26a0c8bfbc7928a56cb678a205cb343101ef3c4e74fee [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" "ef90ced1113253b1c6d26a0c8bfbc7928a56cb678a205cb343101ef3c4e74fee", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Checking crossbeam v0.3.2 [INFO] [stderr] Checking concache v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:49:25 [INFO] [stdout] | [INFO] [stdout] 49 | let mut raw = k.as_raw(); [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/crossbeam/linked_list.rs:50:25 [INFO] [stdout] | [INFO] [stdout] 50 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:55:29 [INFO] [stdout] | [INFO] [stdout] 55 | let mut ins = Owned::new(kv.1); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:63:29 [INFO] [stdout] | [INFO] [stdout] 63 | let mut ins = Owned::new(Node::new(kv.0, kv.1)); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:71:25 [INFO] [stdout] | [INFO] [stdout] 71 | let mut ins = Owned::new(Node::new(kv.0, kv.1)); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:86:25 [INFO] [stdout] | [INFO] [stdout] 86 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:87:25 [INFO] [stdout] | [INFO] [stdout] 87 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:108:25 [INFO] [stdout] | [INFO] [stdout] 108 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:109:25 [INFO] [stdout] | [INFO] [stdout] 109 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:118:29 [INFO] [stdout] | [INFO] [stdout] 118 | let mut new_node = match node.load(Ordering::SeqCst, &guard) { [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:124:29 [INFO] [stdout] | [INFO] [stdout] 124 | let mut new_node_raw_cur = unsafe { &*new_node.as_raw() }; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:157:17 [INFO] [stdout] | [INFO] [stdout] 157 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:158:17 [INFO] [stdout] | [INFO] [stdout] 158 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.5.6 [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:49:25 [INFO] [stdout] | [INFO] [stdout] 49 | let mut raw = k.as_raw(); [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/crossbeam/linked_list.rs:50:25 [INFO] [stdout] | [INFO] [stdout] 50 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:55:29 [INFO] [stdout] | [INFO] [stdout] 55 | let mut ins = Owned::new(kv.1); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:63:29 [INFO] [stdout] | [INFO] [stdout] 63 | let mut ins = Owned::new(Node::new(kv.0, kv.1)); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:71:25 [INFO] [stdout] | [INFO] [stdout] 71 | let mut ins = Owned::new(Node::new(kv.0, kv.1)); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:86:25 [INFO] [stdout] | [INFO] [stdout] 86 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:87:25 [INFO] [stdout] | [INFO] [stdout] 87 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:108:25 [INFO] [stdout] | [INFO] [stdout] 108 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:109:25 [INFO] [stdout] | [INFO] [stdout] 109 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:118:29 [INFO] [stdout] | [INFO] [stdout] 118 | let mut new_node = match node.load(Ordering::SeqCst, &guard) { [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:124:29 [INFO] [stdout] | [INFO] [stdout] 124 | let mut new_node_raw_cur = unsafe { &*new_node.as_raw() }; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:157:17 [INFO] [stdout] | [INFO] [stdout] 157 | let mut raw = k.as_raw(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/crossbeam/linked_list.rs:158:17 [INFO] [stdout] | [INFO] [stdout] 158 | let mut cur = unsafe { &*raw }; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.89s [INFO] running `Command { std: "docker" "inspect" "ef90ced1113253b1c6d26a0c8bfbc7928a56cb678a205cb343101ef3c4e74fee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef90ced1113253b1c6d26a0c8bfbc7928a56cb678a205cb343101ef3c4e74fee", kill_on_drop: false }` [INFO] [stdout] ef90ced1113253b1c6d26a0c8bfbc7928a56cb678a205cb343101ef3c4e74fee