[INFO] fetching crate serde_version_derive 0.5.1...
[INFO] checking serde_version_derive-0.5.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate serde_version_derive 0.5.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate serde_version_derive 0.5.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_version_derive 0.5.1
[INFO] finished tweaking crates.io crate serde_version_derive 0.5.1
[INFO] tweaked toml for crates.io crate serde_version_derive 0.5.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-util v0.1.1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffa4418a510b2ee19905c58eb34f9fe49e1e0b11644278145ab0fdb566a6c352
[INFO] running `Command { std: "docker" "start" "-a" "ffa4418a510b2ee19905c58eb34f9fe49e1e0b11644278145ab0fdb566a6c352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffa4418a510b2ee19905c58eb34f9fe49e1e0b11644278145ab0fdb566a6c352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa4418a510b2ee19905c58eb34f9fe49e1e0b11644278145ab0fdb566a6c352", kill_on_drop: false }`
[INFO] [stdout] ffa4418a510b2ee19905c58eb34f9fe49e1e0b11644278145ab0fdb566a6c352
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43d8bf3bd9b0d5650f9edc1487d3f38c77fbdfefd0f7600f8d19f6e39138e557
[INFO] running `Command { std: "docker" "start" "-a" "43d8bf3bd9b0d5650f9edc1487d3f38c77fbdfefd0f7600f8d19f6e39138e557", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.29.0
[INFO] [stderr]    Compiling unicode-xid v0.2.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]    Compiling cc v1.1.15
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]    Compiling backtrace v0.3.73
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking addr2line v0.22.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking proc-macro-util v0.1.1
[INFO] [stderr]     Checking serde_version_derive v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `index` is never read
[INFO] [stdout]    --> src/ast.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub struct Version {
[INFO] [stdout]     |                ------- field in this struct
[INFO] [stdout] 215 |         pub path: PathOrSelf,
[INFO] [stdout] 216 |         pub index: usize,
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `index` and `is_default` are never read
[INFO] [stdout]    --> src/ast.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub struct Version {
[INFO] [stdout]     |                ------- fields in this struct
[INFO] [stdout] 215 |         pub path: PathOrSelf,
[INFO] [stdout] 216 |         pub index: usize,
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout] 217 |         pub is_default: bool,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.79s
[INFO] running `Command { std: "docker" "inspect" "43d8bf3bd9b0d5650f9edc1487d3f38c77fbdfefd0f7600f8d19f6e39138e557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d8bf3bd9b0d5650f9edc1487d3f38c77fbdfefd0f7600f8d19f6e39138e557", kill_on_drop: false }`
[INFO] [stdout] 43d8bf3bd9b0d5650f9edc1487d3f38c77fbdfefd0f7600f8d19f6e39138e557