[INFO] fetching crate concread 0.1.20...
[INFO] checking concread-0.1.20 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate concread 0.1.20 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate concread 0.1.20 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concread 0.1.20
[INFO] finished tweaking crates.io crate concread 0.1.20
[INFO] tweaked toml for crates.io crate concread 0.1.20 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate concread 0.1.20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1024e8ba8339c745c73cf390314cfdcc0b270bec12dfac3e102e5a2d5d090f0
[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" "b1024e8ba8339c745c73cf390314cfdcc0b270bec12dfac3e102e5a2d5d090f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1024e8ba8339c745c73cf390314cfdcc0b270bec12dfac3e102e5a2d5d090f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1024e8ba8339c745c73cf390314cfdcc0b270bec12dfac3e102e5a2d5d090f0", kill_on_drop: false }`
[INFO] [stdout] b1024e8ba8339c745c73cf390314cfdcc0b270bec12dfac3e102e5a2d5d090f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80e10c82f45fd9a133af3ac95d812554ebde1979435bc2bfa4a99a9e8cdde67b
[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" "80e10c82f45fd9a133af3ac95d812554ebde1979435bc2bfa4a99a9e8cdde67b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[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]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking concread v0.1.20 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `u64x8` should have an upper camel case name
[INFO] [stdout]   --> src/collections/hashmap/node.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | 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/collections/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/collections/bptree/node.rs:254:19
[INFO] [stdout]     |
[INFO] [stdout] 254 |     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/collections/bptree/node.rs:264:19
[INFO] [stdout]     |
[INFO] [stdout] 264 |     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/collections/bptree/node.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 268 |     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/collections/bptree/node.rs:488:8
[INFO] [stdout]     |
[INFO] [stdout] 488 |     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/collections/bptree/node.rs:823:8
[INFO] [stdout]     |
[INFO] [stdout] 823 |     fn set_count(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pin`
[INFO] [stdout]   --> src/collections/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/collections/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/collections/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/collections/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/collections/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/collections/hashmap/node.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     data: [u64; 8],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_txid`
[INFO] [stdout]    --> src/collections/hashmap/node.rs:286:19
[INFO] [stdout]     |
[INFO] [stdout] 286 |     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/collections/hashmap/node.rs:296:19
[INFO] [stdout]     |
[INFO] [stdout] 296 |     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/collections/hashmap/node.rs:300:19
[INFO] [stdout]     |
[INFO] [stdout] 300 |     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/collections/hashmap/node.rs:522:8
[INFO] [stdout]     |
[INFO] [stdout] 522 |     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/collections/hashmap/node.rs:947:8
[INFO] [stdout]     |
[INFO] [stdout] 947 |     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/collections/hashmap/node.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | 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/collections/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/collections/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/collections/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/collections/bptree/node.rs:264:19
[INFO] [stdout]     |
[INFO] [stdout] 264 |     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/collections/bptree/node.rs:823:8
[INFO] [stdout]     |
[INFO] [stdout] 823 |     fn set_count(&mut self, c: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pin`
[INFO] [stdout]   --> src/collections/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/collections/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/collections/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/collections/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/collections/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/collections/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/collections/hashmap/node.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     data: [u64; 8],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_branch`
[INFO] [stdout]    --> src/collections/hashmap/node.rs:296:19
[INFO] [stdout]     |
[INFO] [stdout] 296 |     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/collections/hashmap/node.rs:947:8
[INFO] [stdout]     |
[INFO] [stdout] 947 |     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 31.32s
[INFO] running `Command { std: "docker" "inspect" "80e10c82f45fd9a133af3ac95d812554ebde1979435bc2bfa4a99a9e8cdde67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e10c82f45fd9a133af3ac95d812554ebde1979435bc2bfa4a99a9e8cdde67b", kill_on_drop: false }`
[INFO] [stdout] 80e10c82f45fd9a133af3ac95d812554ebde1979435bc2bfa4a99a9e8cdde67b
