[INFO] cloning repository https://github.com/chernomor/ops4struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chernomor/ops4struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchernomor%2Fops4struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchernomor%2Fops4struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ceb2d73046edca845a7d7fe95283cedd9f224c0
[INFO] checking chernomor/ops4struct against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchernomor%2Fops4struct" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chernomor/ops4struct
[INFO] finished tweaking git repo https://github.com/chernomor/ops4struct
[INFO] tweaked toml for git repo https://github.com/chernomor/ops4struct written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chernomor/ops4struct on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chernomor/ops4struct 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" "+54cf65b8d066c082e536455049b95943cf30378f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1e4c6529070656d86087dc2982edaeaf302f18ea031ad14fee169bc783fc272
[INFO] running `Command { std: "docker" "start" "-a" "a1e4c6529070656d86087dc2982edaeaf302f18ea031ad14fee169bc783fc272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1e4c6529070656d86087dc2982edaeaf302f18ea031ad14fee169bc783fc272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1e4c6529070656d86087dc2982edaeaf302f18ea031ad14fee169bc783fc272", kill_on_drop: false }`
[INFO] [stdout] a1e4c6529070656d86087dc2982edaeaf302f18ea031ad14fee169bc783fc272
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c66bcc617b9794534624a1eef67d751f6fbf6f8b653cfd874ef2bc2c0cd6b993
[INFO] running `Command { std: "docker" "start" "-a" "c66bcc617b9794534624a1eef67d751f6fbf6f8b653cfd874ef2bc2c0cd6b993", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]     Checking ops4struct_derive v0.1.0 (/opt/rustwide/workdir/ops4struct_derive)
[INFO] [stderr]     Checking ops4struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `add_assign_ref` is never used
[INFO] [stdout]   --> tests/main.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn add_assign_ref() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "c66bcc617b9794534624a1eef67d751f6fbf6f8b653cfd874ef2bc2c0cd6b993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c66bcc617b9794534624a1eef67d751f6fbf6f8b653cfd874ef2bc2c0cd6b993", kill_on_drop: false }`
[INFO] [stdout] c66bcc617b9794534624a1eef67d751f6fbf6f8b653cfd874ef2bc2c0cd6b993