[INFO] fetching crate conqueue 0.4.0... [INFO] checking conqueue-0.4.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate conqueue 0.4.0 into /workspace/builds/worker-7-tc1/source [INFO] started tweaking crates.io crate conqueue 0.4.0 [INFO] finished tweaking crates.io crate conqueue 0.4.0 [INFO] tweaked toml for crates.io crate conqueue 0.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate conqueue 0.4.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 65f379956fbcb5451dc7469747ddac29c627541d7c107fe74888a71c2e76fa02 [INFO] running `Command { std: "docker" "start" "-a" "65f379956fbcb5451dc7469747ddac29c627541d7c107fe74888a71c2e76fa02", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "65f379956fbcb5451dc7469747ddac29c627541d7c107fe74888a71c2e76fa02", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "65f379956fbcb5451dc7469747ddac29c627541d7c107fe74888a71c2e76fa02", kill_on_drop: false }` [INFO] [stdout] 65f379956fbcb5451dc7469747ddac29c627541d7c107fe74888a71c2e76fa02 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 65b6910ffb9f0e32ff397f48dbd571fea18c594f05e3c08ae6b24b2bb89580f7 [INFO] running `Command { std: "docker" "start" "-a" "65b6910ffb9f0e32ff397f48dbd571fea18c594f05e3c08ae6b24b2bb89580f7", kill_on_drop: false }` [INFO] [stderr] Checking conqueue v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut new = Box::into_raw(Box::new(QueueHead { [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: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:43:29 [INFO] [stdout] | [INFO] [stdout] 43 | ... Box::from_raw(new); [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] 43 | let _ = Box::from_raw(new); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:73:26 [INFO] [stdout] | [INFO] [stdout] 73 | unsafe { Box::from_raw(head) }; [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] 73 | unsafe { let _ = Box::from_raw(head); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:178:26 [INFO] [stdout] | [INFO] [stdout] 178 | unsafe { Box::from_raw(head) }; [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] 178 | unsafe { let _ = Box::from_raw(head); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut new = Box::into_raw(Box::new(QueueHead { [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: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:43:29 [INFO] [stdout] | [INFO] [stdout] 43 | ... Box::from_raw(new); [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] 43 | let _ = Box::from_raw(new); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:73:26 [INFO] [stdout] | [INFO] [stdout] 73 | unsafe { Box::from_raw(head) }; [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] 73 | unsafe { let _ = Box::from_raw(head); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/lib.rs:178:26 [INFO] [stdout] | [INFO] [stdout] 178 | unsafe { Box::from_raw(head) }; [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] 178 | unsafe { let _ = Box::from_raw(head); }; [INFO] [stdout] | +++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s [INFO] running `Command { std: "docker" "inspect" "65b6910ffb9f0e32ff397f48dbd571fea18c594f05e3c08ae6b24b2bb89580f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "65b6910ffb9f0e32ff397f48dbd571fea18c594f05e3c08ae6b24b2bb89580f7", kill_on_drop: false }` [INFO] [stdout] 65b6910ffb9f0e32ff397f48dbd571fea18c594f05e3c08ae6b24b2bb89580f7