[INFO] cloning repository https://github.com/yuifm/nesting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuifm/nesting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuifm%2Fnesting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuifm%2Fnesting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b83a4e7ed7e1078147624c0b87d52a5582b2d27
[INFO] checking yuifm/nesting against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuifm%2Fnesting" "/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/yuifm/nesting
[INFO] finished tweaking git repo https://github.com/yuifm/nesting
[INFO] tweaked toml for git repo https://github.com/yuifm/nesting written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yuifm/nesting on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yuifm/nesting 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14e529081c8a7bc0585ced1efe6ac7f2f7b9909316a9184f38003a2904b793ee
[INFO] running `Command { std: "docker" "start" "-a" "14e529081c8a7bc0585ced1efe6ac7f2f7b9909316a9184f38003a2904b793ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e529081c8a7bc0585ced1efe6ac7f2f7b9909316a9184f38003a2904b793ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e529081c8a7bc0585ced1efe6ac7f2f7b9909316a9184f38003a2904b793ee", kill_on_drop: false }`
[INFO] [stdout] 14e529081c8a7bc0585ced1efe6ac7f2f7b9909316a9184f38003a2904b793ee
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4eabe5eafd104ccabcec484feb8f4e0fedb3e5c3d6944abd983c3cf0ccb45f9f
[INFO] running `Command { std: "docker" "start" "-a" "4eabe5eafd104ccabcec484feb8f4e0fedb3e5c3d6944abd983c3cf0ccb45f9f", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking proc-macro2 v1.0.101
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking nesting v0.1.1 (/opt/rustwide/workdir/nesting)
[INFO] [stderr]     Checking nesting-examples v0.1.0 (/opt/rustwide/workdir/nesting-examples)
[INFO] [stdout] error: struct `FieldStruct` is never constructed
[INFO] [stdout]   --> nesting-examples/src/main.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub struct FieldStruct {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `FieldStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ChildStruct` is never constructed
[INFO] [stdout]   --> nesting-examples/src/main.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 |         pub struct ChildStruct {
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `ChildStruct` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nesting-examples` (bin "nesting-examples" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4eabe5eafd104ccabcec484feb8f4e0fedb3e5c3d6944abd983c3cf0ccb45f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eabe5eafd104ccabcec484feb8f4e0fedb3e5c3d6944abd983c3cf0ccb45f9f", kill_on_drop: false }`
[INFO] [stdout] 4eabe5eafd104ccabcec484feb8f4e0fedb3e5c3d6944abd983c3cf0ccb45f9f
