[INFO] fetching crate zser 0.0.1...
[INFO] checking zser-0.0.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate zser 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate zser 0.0.1
[INFO] finished tweaking crates.io crate zser 0.0.1
[INFO] tweaked toml for crates.io crate zser 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zser 0.0.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.5.3 (available: v1.5.0)
[INFO] [stderr]       Adding error-chain v0.10.0 (available: v0.12.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffa21278806c60aac934a77ab5bbf6b4b834df96960a8e5871b05c4cf94d20f0
[INFO] running `Command { std: "docker" "start" "-a" "ffa21278806c60aac934a77ab5bbf6b4b834df96960a8e5871b05c4cf94d20f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffa21278806c60aac934a77ab5bbf6b4b834df96960a8e5871b05c4cf94d20f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa21278806c60aac934a77ab5bbf6b4b834df96960a8e5871b05c4cf94d20f0", kill_on_drop: false }`
[INFO] [stdout] ffa21278806c60aac934a77ab5bbf6b4b834df96960a8e5871b05c4cf94d20f0
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24a4cf677f809c3d42da971f6feec3a59a9ca61f1555d6ec554e1ec25c8e1a59
[INFO] running `Command { std: "docker" "start" "-a" "24a4cf677f809c3d42da971f6feec3a59a9ca61f1555d6ec554e1ec25c8e1a59", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]     Checking adler2 v2.0.1
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking rustc-demangle v0.1.25
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking data-encoding v2.9.0
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking zser v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `description` is never read
[INFO] [stdout]   --> tests/message_examples.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct MessageExample {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 17 |     pub name: String,
[INFO] [stdout] 18 |     pub description: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MessageExample` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `Command { std: "docker" "inspect" "24a4cf677f809c3d42da971f6feec3a59a9ca61f1555d6ec554e1ec25c8e1a59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a4cf677f809c3d42da971f6feec3a59a9ca61f1555d6ec554e1ec25c8e1a59", kill_on_drop: false }`
[INFO] [stdout] 24a4cf677f809c3d42da971f6feec3a59a9ca61f1555d6ec554e1ec25c8e1a59