[INFO] fetching crate bon-sandbox 3.9.1...
[INFO] checking bon-sandbox-3.9.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate bon-sandbox 3.9.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate bon-sandbox 3.9.1
[INFO] finished tweaking crates.io crate bon-sandbox 3.9.1
[INFO] tweaked toml for crates.io crate bon-sandbox 3.9.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bon-sandbox 3.9.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bon-sandbox 3.9.1 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e386a4ec9ff8806b0c90e67c47ef700c0802e1acbbe46c3efcbd2ec6c229dbd
[INFO] running `Command { std: "docker" "start" "-a" "0e386a4ec9ff8806b0c90e67c47ef700c0802e1acbbe46c3efcbd2ec6c229dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e386a4ec9ff8806b0c90e67c47ef700c0802e1acbbe46c3efcbd2ec6c229dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e386a4ec9ff8806b0c90e67c47ef700c0802e1acbbe46c3efcbd2ec6c229dbd", kill_on_drop: false }`
[INFO] [stdout] 0e386a4ec9ff8806b0c90e67c47ef700c0802e1acbbe46c3efcbd2ec6c229dbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef26a09989ec3780a464e8da15b01d5beb534536bbcf48cb23c6d5642e9e7c75
[INFO] running `Command { std: "docker" "start" "-a" "ef26a09989ec3780a464e8da15b01d5beb534536bbcf48cb23c6d5642e9e7c75", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling try_match_inner v0.5.2
[INFO] [stderr]    Compiling typed-builder-macro v0.23.2
[INFO] [stderr]    Compiling try_match v0.4.2
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]     Checking typed-builder v0.23.2
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
[INFO] [stderr]    Compiling bon-macros v3.9.1
[INFO] [stderr]    Compiling derive_builder_macro v0.20.2
[INFO] [stderr]     Checking derive_builder v0.20.2
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling str_inflector v0.12.0
[INFO] [stderr]     Checking bon v3.9.1
[INFO] [stderr]    Compiling buildstructor v0.6.0
[INFO] [stderr]     Checking bon-sandbox v3.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `PrivateBuilder` is never constructed
[INFO] [stdout]  --> src/private_builder.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct PrivateBuilder {
[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: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bon-sandbox` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `PrivateBuilder` is never constructed
[INFO] [stdout]  --> src/private_builder.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct PrivateBuilder {
[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: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bon-sandbox` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ef26a09989ec3780a464e8da15b01d5beb534536bbcf48cb23c6d5642e9e7c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef26a09989ec3780a464e8da15b01d5beb534536bbcf48cb23c6d5642e9e7c75", kill_on_drop: false }`
[INFO] [stdout] ef26a09989ec3780a464e8da15b01d5beb534536bbcf48cb23c6d5642e9e7c75
