[INFO] fetching crate polywrap_msgpack 0.1.6-beta.7...
[INFO] checking polywrap_msgpack-0.1.6-beta.7 against try#69cf48176da7795067be67cef76e41a8aac9b134 for pr-146013-1
[INFO] extracting crate polywrap_msgpack 0.1.6-beta.7 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate polywrap_msgpack 0.1.6-beta.7
[INFO] finished tweaking crates.io crate polywrap_msgpack 0.1.6-beta.7
[INFO] tweaked toml for crates.io crate polywrap_msgpack 0.1.6-beta.7 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polywrap_msgpack 0.1.6-beta.7 on toolchain 69cf48176da7795067be67cef76e41a8aac9b134
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+69cf48176da7795067be67cef76e41a8aac9b134" "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" "+69cf48176da7795067be67cef76e41a8aac9b134" "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 20 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.16)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+69cf48176da7795067be67cef76e41a8aac9b134" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+69cf48176da7795067be67cef76e41a8aac9b134" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0692caa1ff1a0692aeab521c773c6d2a2adeae788790c6d886dfc45786fbe1ba
[INFO] running `Command { std: "docker" "start" "-a" "0692caa1ff1a0692aeab521c773c6d2a2adeae788790c6d886dfc45786fbe1ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0692caa1ff1a0692aeab521c773c6d2a2adeae788790c6d886dfc45786fbe1ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0692caa1ff1a0692aeab521c773c6d2a2adeae788790c6d886dfc45786fbe1ba", kill_on_drop: false }`
[INFO] [stdout] 0692caa1ff1a0692aeab521c773c6d2a2adeae788790c6d886dfc45786fbe1ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+69cf48176da7795067be67cef76e41a8aac9b134" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1d86aa416355d821055cc8537c03be7dc48776606a4b26858e048aa51fe38dd
[INFO] running `Command { std: "docker" "start" "-a" "a1d86aa416355d821055cc8537c03be7dc48776606a4b26858e048aa51fe38dd", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking rmp v0.8.14
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_bytes v0.11.17
[INFO] [stderr]     Checking rmp-serde v1.3.0
[INFO] [stderr]     Checking rmpv v1.3.0
[INFO] [stderr]     Checking polywrap_msgpack v0.1.6-beta.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ValueTest` is never constructed
[INFO] [stdout]   --> src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct ValueTest {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.28s
[INFO] running `Command { std: "docker" "inspect" "a1d86aa416355d821055cc8537c03be7dc48776606a4b26858e048aa51fe38dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1d86aa416355d821055cc8537c03be7dc48776606a4b26858e048aa51fe38dd", kill_on_drop: false }`
[INFO] [stdout] a1d86aa416355d821055cc8537c03be7dc48776606a4b26858e048aa51fe38dd