[INFO] fetching crate serde_builder 0.2.0...
[INFO] checking serde_builder-0.2.0 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate serde_builder 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate serde_builder 0.2.0 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_builder 0.2.0
[INFO] finished tweaking crates.io crate serde_builder 0.2.0
[INFO] tweaked toml for crates.io crate serde_builder 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate serde_builder 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.14
[INFO] [stderr]   Downloaded itoa v1.0.8
[INFO] [stderr]   Downloaded thiserror-impl v1.0.43
[INFO] [stderr]   Downloaded thiserror v1.0.43
[INFO] [stderr]   Downloaded proc-macro2 v1.0.64
[INFO] [stderr]   Downloaded concat-arrays v0.1.2
[INFO] [stderr]   Downloaded serde v1.0.171
[INFO] [stderr]   Downloaded serde_json v1.0.100
[INFO] [stderr]   Downloaded syn v2.0.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e0bb386365f5b487e968ab1fcaa964c2c4494748b7c32937e64b0a97623eb02
[INFO] running `Command { std: "docker" "start" "-a" "1e0bb386365f5b487e968ab1fcaa964c2c4494748b7c32937e64b0a97623eb02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e0bb386365f5b487e968ab1fcaa964c2c4494748b7c32937e64b0a97623eb02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0bb386365f5b487e968ab1fcaa964c2c4494748b7c32937e64b0a97623eb02", kill_on_drop: false }`
[INFO] [stdout] 1e0bb386365f5b487e968ab1fcaa964c2c4494748b7c32937e64b0a97623eb02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b730093d05cca6eb917437dffdfe7ac9fcfbc2a61d015242987aa53c62bafc
[INFO] running `Command { std: "docker" "start" "-a" "70b730093d05cca6eb917437dffdfe7ac9fcfbc2a61d015242987aa53c62bafc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]    Compiling serde_json v1.0.100
[INFO] [stderr]     Checking itoa v1.0.8
[INFO] [stderr]     Checking ryu v1.0.14
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror-impl v1.0.43
[INFO] [stderr]    Compiling concat-arrays v0.1.2
[INFO] [stderr]     Checking serde_builder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.03s
[INFO] running `Command { std: "docker" "inspect" "70b730093d05cca6eb917437dffdfe7ac9fcfbc2a61d015242987aa53c62bafc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b730093d05cca6eb917437dffdfe7ac9fcfbc2a61d015242987aa53c62bafc", kill_on_drop: false }`
[INFO] [stdout] 70b730093d05cca6eb917437dffdfe7ac9fcfbc2a61d015242987aa53c62bafc