[INFO] cloning repository https://github.com/0rvar/perstruct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0rvar/perstruct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0rvar%2Fperstruct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0rvar%2Fperstruct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d75545e6e5b4bcd7753f5b1125a8150a418d3ee9
[INFO] checking 0rvar/perstruct/d75545e6e5b4bcd7753f5b1125a8150a418d3ee9 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0rvar%2Fperstruct" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0rvar/perstruct 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 git repo https://github.com/0rvar/perstruct
[INFO] finished tweaking git repo https://github.com/0rvar/perstruct
[INFO] tweaked toml for git repo https://github.com/0rvar/perstruct written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/0rvar/perstruct 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_assertions v1.4.0
[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] ccc3ff00ec83fc1665e3ef310a7ce39eebc5f0ee76b169b8b5ed3b6a90a63860
[INFO] running `Command { std: "docker" "start" "-a" "ccc3ff00ec83fc1665e3ef310a7ce39eebc5f0ee76b169b8b5ed3b6a90a63860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccc3ff00ec83fc1665e3ef310a7ce39eebc5f0ee76b169b8b5ed3b6a90a63860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc3ff00ec83fc1665e3ef310a7ce39eebc5f0ee76b169b8b5ed3b6a90a63860", kill_on_drop: false }`
[INFO] [stdout] ccc3ff00ec83fc1665e3ef310a7ce39eebc5f0ee76b169b8b5ed3b6a90a63860
[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] ae92619e14cf6e898626cc54a16e81cb9b458d725fb75fe706fef2a761126d3a
[INFO] running `Command { std: "docker" "start" "-a" "ae92619e14cf6e898626cc54a16e81cb9b458d725fb75fe706fef2a761126d3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v2.0.48
[INFO] [stderr]     Checking perstruct-proc-macros v0.1.0 (/opt/rustwide/workdir/perstruct-proc-macros)
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking perstruct v0.1.0 (/opt/rustwide/workdir/perstruct)
[INFO] [stdout] warning: function `default_foo` is never used
[INFO] [stdout]   --> perstruct/tests/simple_struct.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn default_foo() -> Foo {
[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 26.56s
[INFO] running `Command { std: "docker" "inspect" "ae92619e14cf6e898626cc54a16e81cb9b458d725fb75fe706fef2a761126d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae92619e14cf6e898626cc54a16e81cb9b458d725fb75fe706fef2a761126d3a", kill_on_drop: false }`
[INFO] [stdout] ae92619e14cf6e898626cc54a16e81cb9b458d725fb75fe706fef2a761126d3a