[INFO] fetching crate scc 0.3.13...
[INFO] checking scc-0.3.13 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate scc 0.3.13 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate scc 0.3.13 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scc 0.3.13
[INFO] finished tweaking crates.io crate scc 0.3.13
[INFO] tweaked toml for crates.io crate scc 0.3.13 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 164b7ac220756ca726d05f924d5253e376fdb49581502cfabbe3173f1a19e021
[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" "164b7ac220756ca726d05f924d5253e376fdb49581502cfabbe3173f1a19e021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "164b7ac220756ca726d05f924d5253e376fdb49581502cfabbe3173f1a19e021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164b7ac220756ca726d05f924d5253e376fdb49581502cfabbe3173f1a19e021", kill_on_drop: false }`
[INFO] [stdout] 164b7ac220756ca726d05f924d5253e376fdb49581502cfabbe3173f1a19e021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d6055141fe8ff6b2d4a4549eeb34353556a3f630e205efa561e964023c3f9ec
[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" "0d6055141fe8ff6b2d4a4549eeb34353556a3f630e205efa561e964023c3f9ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking scc v0.3.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `invalidate`
[INFO] [stdout]    --> src/treeindex.rs:128:34
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let (removed, retry, invalidate) = root_node_ref.remove(key, &guard);
[INFO] [stdout]     |                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_invalidate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `internal_node`
[INFO] [stdout]    --> src/treeindex/node.rs:819:44
[INFO] [stdout]     |
[INFO] [stdout] 819 |                         NodeType::Internal(internal_node) => {}
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_internal_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf_node`
[INFO] [stdout]    --> src/treeindex/node.rs:820:40
[INFO] [stdout]     |
[INFO] [stdout] 820 |                         NodeType::Leaf(leaf_node) => {}
[INFO] [stdout]     |                                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaf_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]    --> src/treeindex/leaf.rs:267:12
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn from(&self, metadata: u64, key: &K, exact: bool) -> (usize, *const (K, V)) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_min_greater_equal`
[INFO] [stdout]    --> src/treeindex/leaf.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 |     pub fn from_min_greater_equal(&self, metadata: u64, key: &K) -> (usize, *const (K, V)) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]    --> src/treeindex/leaf.rs:648:12
[INFO] [stdout]     |
[INFO] [stdout] 648 |     pub fn from(key: &K, leaf: &'a Leaf<K, V>) -> LeafScanner<'a, K, V> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_greater_equal`
[INFO] [stdout]    --> src/treeindex/leaf.rs:659:12
[INFO] [stdout]     |
[INFO] [stdout] 659 |     pub fn from_greater_equal(key: &K, leaf: &'a Leaf<K, V>) -> LeafScanner<'a, K, V> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]   --> src/treeindex/leafnode.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/treeindex/leafnode.rs:544:12
[INFO] [stdout]     |
[INFO] [stdout] 544 |     pub fn print(&self, guard: &Guard) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]    --> src/treeindex/node.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/treeindex/node.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn print(&self, guard: &Guard) -> usize {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]    --> src/treeindex/node.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 |     fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_full_node`
[INFO] [stdout]    --> src/treeindex/node.rs:760:8
[INFO] [stdout]     |
[INFO] [stdout] 760 |     fn remove_full_node(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/treeindex/node.rs:887:8
[INFO] [stdout]     |
[INFO] [stdout] 887 |     fn print(&self, guard: &Guard) -> usize {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `invalidate`
[INFO] [stdout]    --> src/treeindex.rs:128:34
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let (removed, retry, invalidate) = root_node_ref.remove(key, &guard);
[INFO] [stdout]     |                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_invalidate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `internal_node`
[INFO] [stdout]    --> src/treeindex/node.rs:819:44
[INFO] [stdout]     |
[INFO] [stdout] 819 |                         NodeType::Internal(internal_node) => {}
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_internal_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf_node`
[INFO] [stdout]    --> src/treeindex/node.rs:820:40
[INFO] [stdout]     |
[INFO] [stdout] 820 |                         NodeType::Leaf(leaf_node) => {}
[INFO] [stdout]     |                                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaf_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]   --> src/treeindex/leafnode.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]    --> src/treeindex/node.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unusable`
[INFO] [stdout]    --> src/treeindex/node.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 |     fn unusable(&self, guard: &Guard) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_full_node`
[INFO] [stdout]    --> src/treeindex/node.rs:760:8
[INFO] [stdout]     |
[INFO] [stdout] 760 |     fn remove_full_node(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.20s
[INFO] running `Command { std: "docker" "inspect" "0d6055141fe8ff6b2d4a4549eeb34353556a3f630e205efa561e964023c3f9ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d6055141fe8ff6b2d4a4549eeb34353556a3f630e205efa561e964023c3f9ec", kill_on_drop: false }`
[INFO] [stdout] 0d6055141fe8ff6b2d4a4549eeb34353556a3f630e205efa561e964023c3f9ec