[INFO] fetching crate better_btree 0.2.6... [INFO] checking better_btree-0.2.6 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate better_btree 0.2.6 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate better_btree 0.2.6 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate better_btree 0.2.6 [INFO] finished tweaking crates.io crate better_btree 0.2.6 [INFO] tweaked toml for crates.io crate better_btree 0.2.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bd0a31f998c10be66f3b1c0effd0953edcd5470f9d2ffb0f0217fe401d33d15e [INFO] running `Command { std: "docker" "start" "-a" "bd0a31f998c10be66f3b1c0effd0953edcd5470f9d2ffb0f0217fe401d33d15e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bd0a31f998c10be66f3b1c0effd0953edcd5470f9d2ffb0f0217fe401d33d15e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd0a31f998c10be66f3b1c0effd0953edcd5470f9d2ffb0f0217fe401d33d15e", kill_on_drop: false }` [INFO] [stdout] bd0a31f998c10be66f3b1c0effd0953edcd5470f9d2ffb0f0217fe401d33d15e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b6fb8bfa91f5782f2f10e8339128a59e150bd7a710285f9143d7f7195242dde4 [INFO] running `Command { std: "docker" "start" "-a" "b6fb8bfa91f5782f2f10e8339128a59e150bd7a710285f9143d7f7195242dde4", kill_on_drop: false }` [INFO] [stderr] Checking better_btree v0.2.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: method `deref_mut` is never used [INFO] [stdout] --> src/node_ref.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 237 | impl<'a, K, V> NodeRef { [INFO] [stdout] | ------------------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 243 | pub fn deref_mut(&mut self) -> &'a mut LeafNode { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref_mut` is never used [INFO] [stdout] --> src/node_ref.rs:255:9 [INFO] [stdout] | [INFO] [stdout] 249 | impl<'a, K, V> NodeRef { [INFO] [stdout] | ----------------------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 255 | pub fn deref_mut(&mut self) -> &'a mut InternalNode { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref` is never used [INFO] [stdout] --> src/node_ref.rs:276:9 [INFO] [stdout] | [INFO] [stdout] 275 | impl<'a, K, V> NodeRef, marker::LeafNode> { [INFO] [stdout] | --------------------------------------------------------------- method in this implementation [INFO] [stdout] 276 | pub fn deref(&self) -> &'a LeafNode { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref` is never used [INFO] [stdout] --> src/node_ref.rs:288:9 [INFO] [stdout] | [INFO] [stdout] 287 | impl<'a, K, V> NodeRef, marker::InternalNode> { [INFO] [stdout] | ------------------------------------------------------------------- method in this implementation [INFO] [stdout] 288 | pub fn deref(&self) -> &'a InternalNode { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref_mut` is never used [INFO] [stdout] --> src/node_ref.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 237 | impl<'a, K, V> NodeRef { [INFO] [stdout] | ------------------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 243 | pub fn deref_mut(&mut self) -> &'a mut LeafNode { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref_mut` is never used [INFO] [stdout] --> src/node_ref.rs:255:9 [INFO] [stdout] | [INFO] [stdout] 249 | impl<'a, K, V> NodeRef { [INFO] [stdout] | ----------------------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 255 | pub fn deref_mut(&mut self) -> &'a mut InternalNode { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref` is never used [INFO] [stdout] --> src/node_ref.rs:276:9 [INFO] [stdout] | [INFO] [stdout] 275 | impl<'a, K, V> NodeRef, marker::LeafNode> { [INFO] [stdout] | --------------------------------------------------------------- method in this implementation [INFO] [stdout] 276 | pub fn deref(&self) -> &'a LeafNode { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deref` is never used [INFO] [stdout] --> src/node_ref.rs:288:9 [INFO] [stdout] | [INFO] [stdout] 287 | impl<'a, K, V> NodeRef, marker::InternalNode> { [INFO] [stdout] | ------------------------------------------------------------------- method in this implementation [INFO] [stdout] 288 | pub fn deref(&self) -> &'a InternalNode { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s [INFO] running `Command { std: "docker" "inspect" "b6fb8bfa91f5782f2f10e8339128a59e150bd7a710285f9143d7f7195242dde4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6fb8bfa91f5782f2f10e8339128a59e150bd7a710285f9143d7f7195242dde4", kill_on_drop: false }` [INFO] [stdout] b6fb8bfa91f5782f2f10e8339128a59e150bd7a710285f9143d7f7195242dde4