[INFO] fetching crate concread 0.2.0...
[INFO] checking concread-0.2.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate concread 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate concread 0.2.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concread 0.2.0
[INFO] finished tweaking crates.io crate concread 0.2.0
[INFO] tweaked toml for crates.io crate concread 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate concread 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ef9e71ec55f62b2b4f98f223274d77e8c6f6507f54a8d72c77015f1f8f4bb34
[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" "8ef9e71ec55f62b2b4f98f223274d77e8c6f6507f54a8d72c77015f1f8f4bb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ef9e71ec55f62b2b4f98f223274d77e8c6f6507f54a8d72c77015f1f8f4bb34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ef9e71ec55f62b2b4f98f223274d77e8c6f6507f54a8d72c77015f1f8f4bb34", kill_on_drop: false }`
[INFO] [stdout] 8ef9e71ec55f62b2b4f98f223274d77e8c6f6507f54a8d72c77015f1f8f4bb34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a671e5d12e1bbac2ea9d550629e55cabaa6a7ca9afb659b0b9f1265be9b3838f
[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" "a671e5d12e1bbac2ea9d550629e55cabaa6a7ca9afb659b0b9f1265be9b3838f", 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] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking concread v0.2.0 (/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: 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:408:19
[INFO] [stdout]     |
[INFO] [stdout] 408 |     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:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     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:948:8
[INFO] [stdout]     |
[INFO] [stdout] 948 |     fn set_slots(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.0
[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: variable does not need to be mutable
[INFO] [stdout]     --> src/bptree/cursor.rs:2191:13
[INFO] [stdout]      |
[INFO] [stdout] 2191 |         let mut sblock = SuperBlock::default();
[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/hashmap/cursor.rs:1950:13
[INFO] [stdout]      |
[INFO] [stdout] 1950 |         let mut sblock = SuperBlock::default();
[INFO] [stdout]      |             ----^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[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: `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: `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: function is never used: `test_bptree2_map_basic_concurrency_small`
[INFO] [stdout]    --> src/bptree/mod.rs:767:8
[INFO] [stdout]     |
[INFO] [stdout] 767 |     fn test_bptree2_map_basic_concurrency_small() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tree_density`
[INFO] [stdout]    --> src/hashmap/cursor.rs:408:19
[INFO] [stdout]     |
[INFO] [stdout] 408 |     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:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     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: `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: `set_slots`
[INFO] [stdout]    --> src/hashmap/node.rs:948:8
[INFO] [stdout]     |
[INFO] [stdout] 948 |     fn set_slots(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.73s
[INFO] running `Command { std: "docker" "inspect" "a671e5d12e1bbac2ea9d550629e55cabaa6a7ca9afb659b0b9f1265be9b3838f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a671e5d12e1bbac2ea9d550629e55cabaa6a7ca9afb659b0b9f1265be9b3838f", kill_on_drop: false }`
[INFO] [stdout] a671e5d12e1bbac2ea9d550629e55cabaa6a7ca9afb659b0b9f1265be9b3838f
