[INFO] fetching crate peril 0.4.2...
[INFO] checking peril-0.4.2 against try#de0e80659cee4f27282e60d63bbb8c5271a0d147 for pr-129392
[INFO] extracting crate peril 0.4.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate peril 0.4.2 on toolchain de0e80659cee4f27282e60d63bbb8c5271a0d147
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peril 0.4.2
[INFO] finished tweaking crates.io crate peril 0.4.2
[INFO] tweaked toml for crates.io crate peril 0.4.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f30705621f98830a0df695989bc8bcc798021eb686c73438e1748c5628582b20
[INFO] running `Command { std: "docker" "start" "-a" "f30705621f98830a0df695989bc8bcc798021eb686c73438e1748c5628582b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f30705621f98830a0df695989bc8bcc798021eb686c73438e1748c5628582b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f30705621f98830a0df695989bc8bcc798021eb686c73438e1748c5628582b20", kill_on_drop: false }`
[INFO] [stdout] f30705621f98830a0df695989bc8bcc798021eb686c73438e1748c5628582b20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b97e000eafb03df1a0b93068c8f559ec2fa9779cdca711f9f33aa2ba36342c3
[INFO] running `Command { std: "docker" "start" "-a" "6b97e000eafb03df1a0b93068c8f559ec2fa9779cdca711f9f33aa2ba36342c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking os-thread-local v0.1.3
[INFO] [stderr]     Checking peril v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]     --> src/lib.rs:1007:47
[INFO] [stdout]      |
[INFO] [stdout] 1007 | struct DeletedItem<T: Send + ?Sized>(*mut (), Arc<Box<T>>);
[INFO] [stdout]      |        ----------- field in this struct       ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider removing this field
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Arc::<T, A>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 Arc::into_raw(boxed);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let _ = Arc::into_raw(boxed);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Arc::<T, A>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:587:13
[INFO] [stdout]     |
[INFO] [stdout] 587 |             Arc::into_raw(boxed);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 587 |             let _ = Arc::into_raw(boxed);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]     --> src/lib.rs:1007:47
[INFO] [stdout]      |
[INFO] [stdout] 1007 | struct DeletedItem<T: Send + ?Sized>(*mut (), Arc<Box<T>>);
[INFO] [stdout]      |        ----------- field in this struct       ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider removing this field
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Arc::<T, A>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 Arc::into_raw(boxed);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let _ = Arc::into_raw(boxed);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Arc::<T, A>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:587:13
[INFO] [stdout]     |
[INFO] [stdout] 587 |             Arc::into_raw(boxed);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 587 |             let _ = Arc::into_raw(boxed);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "6b97e000eafb03df1a0b93068c8f559ec2fa9779cdca711f9f33aa2ba36342c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b97e000eafb03df1a0b93068c8f559ec2fa9779cdca711f9f33aa2ba36342c3", kill_on_drop: false }`
[INFO] [stdout] 6b97e000eafb03df1a0b93068c8f559ec2fa9779cdca711f9f33aa2ba36342c3