[INFO] fetching crate concread 0.2.4...
[INFO] documenting concread-0.2.4 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate concread 0.2.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate concread 0.2.4 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concread 0.2.4
[INFO] finished tweaking crates.io crate concread 0.2.4
[INFO] tweaked toml for crates.io crate concread 0.2.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate concread 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time v0.2.17
[INFO] [stderr]   Downloaded ahash v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b889f05421b3bd7a4262766a734422da9d36ecc59b49fd59e003cc086cf57c54
[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" "b889f05421b3bd7a4262766a734422da9d36ecc59b49fd59e003cc086cf57c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b889f05421b3bd7a4262766a734422da9d36ecc59b49fd59e003cc086cf57c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b889f05421b3bd7a4262766a734422da9d36ecc59b49fd59e003cc086cf57c54", kill_on_drop: false }`
[INFO] [stdout] b889f05421b3bd7a4262766a734422da9d36ecc59b49fd59e003cc086cf57c54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] ada79a442d0f0190df357a9f1650b5e5ede024421eafbb80df0dcde7741428bc
[INFO] running `Command { std: "docker" "start" "-a" "ada79a442d0f0190df357a9f1650b5e5ede024421eafbb80df0dcde7741428bc", kill_on_drop: false }`
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.4.4
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num-bigint v0.3.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking concread v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting concread v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `u64x8` should have an upper camel case name
[INFO] [stdout]   --> src/hashmap/node.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct u64x8 {
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `U64x8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `u64x8` should have an upper camel case name
[INFO] [stdout]   --> src/hashmap/node.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct u64x8 {
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `U64x8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/macros.rs:15:9
[INFO] [stdout]      |
[INFO] [stdout] 15   |           unsafe { &mut *($x as *mut Meta) }
[INFO] [stdout]      |           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/hashmap/cursor.rs:996:1
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] 1002 |   {
[INFO] [stdout] 1003 |       if self_meta!(node).is_leaf() {
[INFO] [stdout]      |          ---------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/macros.rs:21:23
[INFO] [stdout]      |
[INFO] [stdout] 21   |           debug_assert!(unsafe { (*$x).meta.is_branch() });
[INFO] [stdout]      |                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/hashmap/cursor.rs:996:1
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 1007 |           let nmref = branch_ref!(node, K, V);
[INFO] [stdout]      |                       ----------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/macros.rs:22:9
[INFO] [stdout]      |
[INFO] [stdout] 22   |           unsafe { &mut *($x as *mut Branch<$k, $v>) }
[INFO] [stdout]      |           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/hashmap/cursor.rs:996:1
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 1007 |           let nmref = branch_ref!(node, K, V);
[INFO] [stdout]      |                       ----------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/macros.rs:28:23
[INFO] [stdout]      |
[INFO] [stdout] 28   |           debug_assert!(unsafe { (*$x).meta.is_leaf() });
[INFO] [stdout]      |                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/hashmap/cursor.rs:996:1
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 1004 |           leaf_ref!(node, K, V).get_slot_mut_ref(h)
[INFO] [stdout]      |           --------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/macros.rs:29:9
[INFO] [stdout]      |
[INFO] [stdout] 29   |           unsafe { &mut *($x as *mut Leaf<$k, $v>) }
[INFO] [stdout]      |           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/hashmap/cursor.rs:996:1
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 1004 |           leaf_ref!(node, K, V).get_slot_mut_ref(h)
[INFO] [stdout]      |           --------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/hashmap/cursor.rs:1017:19
[INFO] [stdout]      |
[INFO] [stdout] 996  | / unsafe fn path_get_slot_mut_ref<'a, K: Clone + Hash + Eq + Debug, V: Clone>(
[INFO] [stdout] 997  | |     node: *mut Node<K, V>,
[INFO] [stdout] 998  | |     h: u64,
[INFO] [stdout] 999  | | ) -> Option<&'a mut [Datum<K, V>]>
[INFO] [stdout] 1000 | | where
[INFO] [stdout] 1001 | |     K: 'a,
[INFO] [stdout]      | |__________- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 1017 |           r.map(|v| unsafe { &mut *v as &mut [Datum<K, V>] })
[INFO] [stdout]      |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hashmap/node.rs:598:29
[INFO] [stdout]     |
[INFO] [stdout] 598 |             .map(|slot_idx| unsafe { (*self.values[slot_idx].as_mut_ptr()).as_mut_slice() })
[INFO] [stdout]     |                             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tree_density`
[INFO] [stdout]    --> src/bptree/cursor.rs:477:19
[INFO] [stdout]     |
[INFO] [stdout] 477 |     pub(crate) fn tree_density(&self) -> (usize, usize) {
[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: `get_txid`
[INFO] [stdout]    --> src/bptree/node.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub(crate) fn get_txid(&self) -> u64 {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_branch`
[INFO] [stdout]    --> src/bptree/node.rs:265:19
[INFO] [stdout]     |
[INFO] [stdout] 265 |     pub(crate) fn is_branch(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tree_density`
[INFO] [stdout]    --> src/bptree/node.rs:269:19
[INFO] [stdout]     |
[INFO] [stdout] 269 |     pub(crate) fn tree_density(&self) -> (usize, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_count`
[INFO] [stdout]    --> src/bptree/node.rs:489:8
[INFO] [stdout]     |
[INFO] [stdout] 489 |     fn set_count(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_count`
[INFO] [stdout]    --> src/bptree/node.rs:824:8
[INFO] [stdout]     |
[INFO] [stdout] 824 |     fn set_count(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pin`
[INFO] [stdout]   --> src/bptree/mod.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pin: Arc<SuperBlock<K, V>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_txid`
[INFO] [stdout]    --> src/bptree/mod.rs:269:19
[INFO] [stdout]     |
[INFO] [stdout] 269 |     pub(crate) fn get_txid(&self) -> u64 {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_txid`
[INFO] [stdout]    --> src/bptree/mod.rs:436:19
[INFO] [stdout]     |
[INFO] [stdout] 436 |     pub(crate) fn get_txid(&self) -> u64 {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tree_density`
[INFO] [stdout]    --> src/hashmap/cursor.rs:424:19
[INFO] [stdout]     |
[INFO] [stdout] 424 |     pub(crate) fn tree_density(&self) -> (usize, usize, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pin`
[INFO] [stdout]   --> src/hashmap/map.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pin: Arc<SuperBlock<K, V>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/hashmap/node.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     data: [u64; 8],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_txid`
[INFO] [stdout]    --> src/hashmap/node.rs:287:19
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub(crate) fn get_txid(&self) -> u64 {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_branch`
[INFO] [stdout]    --> src/hashmap/node.rs:297:19
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub(crate) fn is_branch(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tree_density`
[INFO] [stdout]    --> src/hashmap/node.rs:301:19
[INFO] [stdout]     |
[INFO] [stdout] 301 |     pub(crate) fn tree_density(&self) -> (usize, usize, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_slots`
[INFO] [stdout]    --> src/hashmap/node.rs:523:8
[INFO] [stdout]     |
[INFO] [stdout] 523 |     fn set_slots(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_slots`
[INFO] [stdout]    --> src/hashmap/node.rs:961:8
[INFO] [stdout]     |
[INFO] [stdout] 961 |     fn set_slots(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.79s
[INFO] running `Command { std: "docker" "inspect" "ada79a442d0f0190df357a9f1650b5e5ede024421eafbb80df0dcde7741428bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada79a442d0f0190df357a9f1650b5e5ede024421eafbb80df0dcde7741428bc", kill_on_drop: false }`
[INFO] [stdout] ada79a442d0f0190df357a9f1650b5e5ede024421eafbb80df0dcde7741428bc
