[INFO] fetching crate zchunk 0.2.0...
[INFO] checking zchunk-0.2.0 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate zchunk 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate zchunk 0.2.0
[INFO] finished tweaking crates.io crate zchunk 0.2.0
[INFO] tweaked toml for crates.io crate zchunk 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zchunk 0.2.0 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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 69 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding sha2 v0.10.9 (available: v0.11.0)
[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" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cd33457efbfc45a13d769b20dc8d03db5ae4b17d6c748fa12cb1c3cdb550179
[INFO] running `Command { std: "docker" "start" "-a" "6cd33457efbfc45a13d769b20dc8d03db5ae4b17d6c748fa12cb1c3cdb550179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cd33457efbfc45a13d769b20dc8d03db5ae4b17d6c748fa12cb1c3cdb550179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cd33457efbfc45a13d769b20dc8d03db5ae4b17d6c748fa12cb1c3cdb550179", kill_on_drop: false }`
[INFO] [stdout] 6cd33457efbfc45a13d769b20dc8d03db5ae4b17d6c748fa12cb1c3cdb550179
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c389bb19afab5e5609355e33674fa7323de24aa2a238f1f768855f7b3ccbd6b
[INFO] running `Command { std: "docker" "start" "-a" "5c389bb19afab5e5609355e33674fa7323de24aa2a238f1f768855f7b3ccbd6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]     Checking bitflags v2.11.0
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking rustix v1.1.4
[INFO] [stderr]     Checking getrandom v0.4.2
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.57
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking zstd v0.13.3
[INFO] [stderr]     Checking zchunk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `DataChunk` is never constructed
[INFO] [stdout]    --> src/format.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | struct DataChunk(Vec<u8>);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataChunk` is never constructed
[INFO] [stdout]    --> src/format.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | struct DataChunk(Vec<u8>);
[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 12.74s
[INFO] running `Command { std: "docker" "inspect" "5c389bb19afab5e5609355e33674fa7323de24aa2a238f1f768855f7b3ccbd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c389bb19afab5e5609355e33674fa7323de24aa2a238f1f768855f7b3ccbd6b", kill_on_drop: false }`
[INFO] [stdout] 5c389bb19afab5e5609355e33674fa7323de24aa2a238f1f768855f7b3ccbd6b