[INFO] fetching crate libipld-core 0.16.0...
[INFO] testing libipld-core-0.16.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate libipld-core 0.16.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate libipld-core 0.16.0
[INFO] finished tweaking crates.io crate libipld-core 0.16.0
[INFO] tweaked toml for crates.io crate libipld-core 0.16.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libipld-core 0.16.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 98 packages to latest compatible versions
[INFO] [stderr]       Adding cid v0.10.1 (available: v0.11.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding multihash v0.18.1 (available: v0.19.3)
[INFO] [stderr]       Adding proc-macro-crate v1.1.3 (available: v1.3.1)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_test v1.0.177
[INFO] [stderr]   Downloaded rand_core v0.10.0
[INFO] [stderr]   Downloaded env_logger v0.11.10
[INFO] [stderr]   Downloaded match-lookup v0.1.2
[INFO] [stderr]   Downloaded data-encoding-macro v0.1.19
[INFO] [stderr]   Downloaded multibase v0.9.2
[INFO] [stderr]   Downloaded base256emoji v1.0.2
[INFO] [stderr]   Downloaded multihash v0.18.1
[INFO] [stderr]   Downloaded cid v0.10.1
[INFO] [stderr]   Downloaded const-str v0.4.3
[INFO] [stderr]   Downloaded rand v0.10.0
[INFO] [stderr]   Downloaded cpufeatures v0.3.0
[INFO] [stderr]   Downloaded quickcheck v1.1.0
[INFO] [stderr]   Downloaded data-encoding-macro-internal v0.1.17
[INFO] [stderr]   Downloaded proc-macro-crate v1.1.3
[INFO] [stderr]   Downloaded multihash-derive v0.8.1
[INFO] [stderr]   Downloaded serde-big-array v0.3.3
[INFO] [stderr]   Downloaded env_filter v1.0.1
[INFO] [stderr]   Downloaded blake3 v1.8.4
[INFO] [stderr]   Downloaded serde_bytes v0.11.19
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c05d5cac3f1bc157f290cfd27f715475e650ced94380ff685785759792ee99c
[INFO] running `Command { std: "docker" "start" "-a" "5c05d5cac3f1bc157f290cfd27f715475e650ced94380ff685785759792ee99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c05d5cac3f1bc157f290cfd27f715475e650ced94380ff685785759792ee99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c05d5cac3f1bc157f290cfd27f715475e650ced94380ff685785759792ee99c", kill_on_drop: false }`
[INFO] [stdout] 5c05d5cac3f1bc157f290cfd27f715475e650ced94380ff685785759792ee99c
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e6ee5bd09e95c48b8caaf4bf87276e8812efd348aa8610fbf52cb14bc9c9f30
[INFO] running `Command { std: "docker" "start" "-a" "7e6ee5bd09e95c48b8caaf4bf87276e8812efd348aa8610fbf52cb14bc9c9f30", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling data-encoding v2.10.0
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling const-str v0.4.3
[INFO] [stderr]    Compiling unsigned-varint v0.7.2
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling core2 v0.4.0
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.17
[INFO] [stderr]    Compiling match-lookup v0.1.2
[INFO] [stderr]    Compiling base256emoji v1.0.2
[INFO] [stderr]    Compiling data-encoding-macro v0.1.19
[INFO] [stderr]    Compiling multibase v0.9.2
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling multihash-derive v0.8.1
[INFO] [stderr]    Compiling multihash v0.18.1
[INFO] [stderr]    Compiling cid v0.10.1
[INFO] [stderr]    Compiling libipld-core v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: using `.deref()` on a double reference, which returns `&T` instead of dereferencing the inner type
[INFO] [stdout]   --> src/codec.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         self.deref().encode(c, w)
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout]  3 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(suspicious_double_ref_op)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libipld-core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7e6ee5bd09e95c48b8caaf4bf87276e8812efd348aa8610fbf52cb14bc9c9f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e6ee5bd09e95c48b8caaf4bf87276e8812efd348aa8610fbf52cb14bc9c9f30", kill_on_drop: false }`
[INFO] [stdout] 7e6ee5bd09e95c48b8caaf4bf87276e8812efd348aa8610fbf52cb14bc9c9f30