[INFO] fetching crate papaya 0.2.3...
[INFO] building papaya-0.2.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate papaya 0.2.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate papaya 0.2.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate papaya 0.2.3
[INFO] tweaked toml for crates.io crate papaya 0.2.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate papaya 0.2.3 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate papaya 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded is-terminal v0.4.12
[INFO] [stderr]   Downloaded redox_syscall v0.5.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.79
[INFO] [stderr]   Downloaded seize v0.5.0
[INFO] [stderr]   Downloaded flate2 v1.0.30
[INFO] [stderr]   Downloaded oorandom v11.1.4
[INFO] [stderr]   Downloaded plotters v0.3.6
[INFO] [stderr]   Downloaded plotters-backend v0.3.6
[INFO] [stderr]   Downloaded getrandom v0.2.14
[INFO] [stderr]   Downloaded plotters-svg v0.3.6
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.5
[INFO] [stderr]   Downloaded libc v0.2.151
[INFO] [stderr]   Downloaded cc v1.1.0
[INFO] [stderr]   Downloaded winapi-util v0.1.8
[INFO] [stderr]   Downloaded tokio v1.38.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.13
[INFO] [stderr]   Downloaded object v0.36.1
[INFO] [stderr]   Downloaded regex v1.10.5
[INFO] [stderr]   Downloaded syn v2.0.58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abc591cc812c7de6f4c445f593cc32f956542d195f2b3094bddf0d7bf0f20476
[INFO] running `Command { std: "docker" "start" "-a" "abc591cc812c7de6f4c445f593cc32f956542d195f2b3094bddf0d7bf0f20476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abc591cc812c7de6f4c445f593cc32f956542d195f2b3094bddf0d7bf0f20476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc591cc812c7de6f4c445f593cc32f956542d195f2b3094bddf0d7bf0f20476", kill_on_drop: false }`
[INFO] [stdout] abc591cc812c7de6f4c445f593cc32f956542d195f2b3094bddf0d7bf0f20476
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2769edd7bf6ea6e2291fe2dd748435ebf211237ca67d59b2976ae363abd9192a
[INFO] running `Command { std: "docker" "start" "-a" "2769edd7bf6ea6e2291fe2dd748435ebf211237ca67d59b2976ae363abd9192a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling seize v0.5.0
[INFO] [stderr]    Compiling papaya v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AtomicPtrFetchOps`
[INFO] [stdout]   --> src/raw/mod.rs:14:29
[INFO] [stdout]    |
[INFO] [stdout] 14 | use self::utils::{untagged, AtomicPtrFetchOps, Counter, Parker, StrictProvenance, Tagged};
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait `AtomicPtrFetchOps` is never used
[INFO] [stdout]    --> src/raw/utils/tagged.rs:96:11
[INFO] [stdout]     |
[INFO] [stdout]  96 | pub trait AtomicPtrFetchOps<T> {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:220:5
[INFO] [stdout]     |
[INFO] [stdout] 220 |     dead_code,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `papaya` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "2769edd7bf6ea6e2291fe2dd748435ebf211237ca67d59b2976ae363abd9192a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2769edd7bf6ea6e2291fe2dd748435ebf211237ca67d59b2976ae363abd9192a", kill_on_drop: false }`
[INFO] [stdout] 2769edd7bf6ea6e2291fe2dd748435ebf211237ca67d59b2976ae363abd9192a