[INFO] fetching crate serde_version_derive 0.5.1...
[INFO] checking serde_version_derive-0.5.1 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[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 a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "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" "+a3f76a26e045a760bb1163b7eab36872985242d5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3452221a8a4e7e0411a1457b77eeb3de36e85cb08094411d1a60dd48250960f5
[INFO] running `Command { std: "docker" "start" "-a" "3452221a8a4e7e0411a1457b77eeb3de36e85cb08094411d1a60dd48250960f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3452221a8a4e7e0411a1457b77eeb3de36e85cb08094411d1a60dd48250960f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3452221a8a4e7e0411a1457b77eeb3de36e85cb08094411d1a60dd48250960f5", kill_on_drop: false }`
[INFO] [stdout] 3452221a8a4e7e0411a1457b77eeb3de36e85cb08094411d1a60dd48250960f5
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51656e3c8921f536e6ea3b3a8a19b62a4172087d5d891473f7c081a0f7045438
[INFO] running `Command { std: "docker" "start" "-a" "51656e3c8921f536e6ea3b3a8a19b62a4172087d5d891473f7c081a0f7045438", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]     Checking gimli v0.31.0
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking addr2line v0.24.1
[INFO] [stderr]     Checking backtrace v0.3.74
[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: 1 warning emitted
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.32s
[INFO] running `Command { std: "docker" "inspect" "51656e3c8921f536e6ea3b3a8a19b62a4172087d5d891473f7c081a0f7045438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51656e3c8921f536e6ea3b3a8a19b62a4172087d5d891473f7c081a0f7045438", kill_on_drop: false }`
[INFO] [stdout] 51656e3c8921f536e6ea3b3a8a19b62a4172087d5d891473f7c081a0f7045438