[INFO] fetching crate mwcas 0.2.0...
[INFO] checking mwcas-0.2.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate mwcas 0.2.0 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mwcas 0.2.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 82 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1c2e0383bae996adddefa63398db9c32f9fd7e922496aaa7d00049048bb6ce9
[INFO] running `Command { std: "docker" "start" "-a" "c1c2e0383bae996adddefa63398db9c32f9fd7e922496aaa7d00049048bb6ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1c2e0383bae996adddefa63398db9c32f9fd7e922496aaa7d00049048bb6ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1c2e0383bae996adddefa63398db9c32f9fd7e922496aaa7d00049048bb6ce9", kill_on_drop: false }`
[INFO] [stdout] c1c2e0383bae996adddefa63398db9c32f9fd7e922496aaa7d00049048bb6ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc31c3f6af5f5793fc6581573c36871220a5e1615fde0f01f28ad6d6456ef435
[INFO] running `Command { std: "docker" "start" "-a" "cc31c3f6af5f5793fc6581573c36871220a5e1615fde0f01f28ad6d6456ef435", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking rayon-core v1.13.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking regex-automata v0.4.10
[INFO] [stderr]     Checking mwcas v0.2.0 (/opt/rustwide/workdir)
[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] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking regex v1.11.2
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[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] [stderr] error: could not compile `mwcas` (bench "mwcas_bench") due to 1 previous error
[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] running `Command { std: "docker" "inspect" "cc31c3f6af5f5793fc6581573c36871220a5e1615fde0f01f28ad6d6456ef435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc31c3f6af5f5793fc6581573c36871220a5e1615fde0f01f28ad6d6456ef435", kill_on_drop: false }`
[INFO] [stdout] cc31c3f6af5f5793fc6581573c36871220a5e1615fde0f01f28ad6d6456ef435