[INFO] fetching crate mwcas 0.2.0...
[INFO] checking mwcas-0.2.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate mwcas 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mwcas 0.2.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mwcas 0.2.0
[INFO] finished tweaking crates.io crate mwcas 0.2.0
[INFO] tweaked toml for crates.io crate mwcas 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 81 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.18)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (available: v0.5.0)
[INFO] [stderr]       Adding half v1.8.3 (available: v2.4.1)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding textwrap v0.11.0 (available: v0.16.1)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed495818276dd53b1806642da5001fa4b25a037812bfb80da38037b468609543
[INFO] running `Command { std: "docker" "start" "-a" "ed495818276dd53b1806642da5001fa4b25a037812bfb80da38037b468609543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed495818276dd53b1806642da5001fa4b25a037812bfb80da38037b468609543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed495818276dd53b1806642da5001fa4b25a037812bfb80da38037b468609543", kill_on_drop: false }`
[INFO] [stdout] ed495818276dd53b1806642da5001fa4b25a037812bfb80da38037b468609543
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c297f6a9f9ccc3d600a38d5e4949308b05e542243d2183d4d6fc424d2fe0e0c
[INFO] running `Command { std: "docker" "start" "-a" "4c297f6a9f9ccc3d600a38d5e4949308b05e542243d2183d4d6fc424d2fe0e0c", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking mwcas v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stdout] warning: method `status` is never used
[INFO] [stdout]    --> src/lib.rs:331:8
[INFO] [stdout]     |
[INFO] [stdout] 329 | impl<'g> MwCasInner<'g> {
[INFO] [stdout]     | ----------------------- method in this implementation
[INFO] [stdout] 330 |     #[inline(always)]
[INFO] [stdout] 331 |     fn status(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&&MwCasInner<'_>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/lib.rs:354:46
[INFO] [stdout]     |
[INFO] [stdout] 354 |                         if &mwcas_ptr != self.deref() {
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:403:48
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let mwcas_ptr = MwCasPointer::from(self.deref());
[INFO] [stdout]     |                                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `MwCasInner<'_>` does not implement `Deref`, so calling `deref` on `&MwCasInner<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 403 -         let mwcas_ptr = MwCasPointer::from(self.deref());
[INFO] [stdout] 403 +         let mwcas_ptr = MwCasPointer::from(self);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `MwCasInner<'_>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 322 + #[derive(Clone)]
[INFO] [stdout] 323 | struct MwCasInner<'g> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:544:47
[INFO] [stdout]     |
[INFO] [stdout] 544 |         let new_val = MwCasPointer::from(mwcas.deref()).poisoned();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `MwCasInner<'_>` does not implement `Deref`, so calling `deref` on `&MwCasInner<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 544 -         let new_val = MwCasPointer::from(mwcas.deref()).poisoned();
[INFO] [stdout] 544 +         let new_val = MwCasPointer::from(mwcas).poisoned();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `MwCasInner<'_>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 322 + #[derive(Clone)]
[INFO] [stdout] 323 | struct MwCasInner<'g> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] error: couldn't read benches/bench.rs: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mwcas` (bench "mwcas_bench") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1013:17
[INFO] [stdout]      |
[INFO] [stdout] 1013 |             let mut value = HeapPointer::new(1);
[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: using `.deref()` on a double reference, which returns `&&MwCasInner<'_>` instead of dereferencing the inner type
[INFO] [stdout]    --> src/lib.rs:354:46
[INFO] [stdout]     |
[INFO] [stdout] 354 |                         if &mwcas_ptr != self.deref() {
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:403:48
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let mwcas_ptr = MwCasPointer::from(self.deref());
[INFO] [stdout]     |                                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `MwCasInner<'_>` does not implement `Deref`, so calling `deref` on `&MwCasInner<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 403 -         let mwcas_ptr = MwCasPointer::from(self.deref());
[INFO] [stdout] 403 +         let mwcas_ptr = MwCasPointer::from(self);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `MwCasInner<'_>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 322 + #[derive(Clone)]
[INFO] [stdout] 323 | struct MwCasInner<'g> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:544:47
[INFO] [stdout]     |
[INFO] [stdout] 544 |         let new_val = MwCasPointer::from(mwcas.deref()).poisoned();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `MwCasInner<'_>` does not implement `Deref`, so calling `deref` on `&MwCasInner<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 544 -         let new_val = MwCasPointer::from(mwcas.deref()).poisoned();
[INFO] [stdout] 544 +         let new_val = MwCasPointer::from(mwcas).poisoned();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `MwCasInner<'_>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 322 + #[derive(Clone)]
[INFO] [stdout] 323 | struct MwCasInner<'g> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4c297f6a9f9ccc3d600a38d5e4949308b05e542243d2183d4d6fc424d2fe0e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c297f6a9f9ccc3d600a38d5e4949308b05e542243d2183d4d6fc424d2fe0e0c", kill_on_drop: false }`
[INFO] [stdout] 4c297f6a9f9ccc3d600a38d5e4949308b05e542243d2183d4d6fc424d2fe0e0c