[INFO] cloning repository https://github.com/kvverti/cgc-strategy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kvverti/cgc-strategy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkvverti%2Fcgc-strategy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkvverti%2Fcgc-strategy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89416a990b6dd318d2b14c2d55bb81ade1baee9d
[INFO] checking kvverti/cgc-strategy against try#5f6abd89da253a562ad85d235b9342a3ac336c28 for pr-156114-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkvverti%2Fcgc-strategy" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kvverti/cgc-strategy
[INFO] finished tweaking git repo https://github.com/kvverti/cgc-strategy
[INFO] tweaked toml for git repo https://github.com/kvverti/cgc-strategy written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kvverti/cgc-strategy on toolchain 5f6abd89da253a562ad85d235b9342a3ac336c28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kvverti/cgc-strategy 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" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a461a0291e4dd3a8ac8f81255407ba3445819a6b6bb96d10afdb4a8ec7d4c51
[INFO] running `Command { std: "docker" "start" "-a" "6a461a0291e4dd3a8ac8f81255407ba3445819a6b6bb96d10afdb4a8ec7d4c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a461a0291e4dd3a8ac8f81255407ba3445819a6b6bb96d10afdb4a8ec7d4c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a461a0291e4dd3a8ac8f81255407ba3445819a6b6bb96d10afdb4a8ec7d4c51", kill_on_drop: false }`
[INFO] [stdout] 6a461a0291e4dd3a8ac8f81255407ba3445819a6b6bb96d10afdb4a8ec7d4c51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cca06238996f2bf0d5591c4473f211a9602e8c2bbc145da077313a6db4c63d2b
[INFO] running `Command { std: "docker" "start" "-a" "cca06238996f2bf0d5591c4473f211a9602e8c2bbc145da077313a6db4c63d2b", kill_on_drop: false }`
[INFO] [stderr]     Checking cgc-strategy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `layout` and `trace` are never read
[INFO] [stdout]   --> src/heap.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct GcVtable {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout]  9 |     /// The size and alignment of the GC allocation.
[INFO] [stdout] 10 |     layout: Layout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     trace: unsafe fn(NonNull<()>, &TraceContext<'_>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `layout` and `trace` are never read
[INFO] [stdout]   --> src/heap.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct GcVtable {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout]  9 |     /// The size and alignment of the GC allocation.
[INFO] [stdout] 10 |     layout: Layout,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     trace: unsafe fn(NonNull<()>, &TraceContext<'_>),
[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 0.27s
[INFO] running `Command { std: "docker" "inspect" "cca06238996f2bf0d5591c4473f211a9602e8c2bbc145da077313a6db4c63d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cca06238996f2bf0d5591c4473f211a9602e8c2bbc145da077313a6db4c63d2b", kill_on_drop: false }`
[INFO] [stdout] cca06238996f2bf0d5591c4473f211a9602e8c2bbc145da077313a6db4c63d2b