[INFO] fetching crate arc_wrapper 0.1.6...
[INFO] checking arc_wrapper-0.1.6 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate arc_wrapper 0.1.6 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate arc_wrapper 0.1.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate arc_wrapper 0.1.6
[INFO] tweaked toml for crates.io crate arc_wrapper 0.1.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc_wrapper 0.1.6 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate arc_wrapper 0.1.6 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cccb2620089846427ecd70fe75897bb7fb19006e9c1c0594bd602b49207a220e
[INFO] running `Command { std: "docker" "start" "-a" "cccb2620089846427ecd70fe75897bb7fb19006e9c1c0594bd602b49207a220e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cccb2620089846427ecd70fe75897bb7fb19006e9c1c0594bd602b49207a220e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cccb2620089846427ecd70fe75897bb7fb19006e9c1c0594bd602b49207a220e", kill_on_drop: false }`
[INFO] [stdout] cccb2620089846427ecd70fe75897bb7fb19006e9c1c0594bd602b49207a220e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b800ebe9cdb6b75e730b5585badb2424d5ba55958ca60703e7b0808bf7cb66fc
[INFO] running `Command { std: "docker" "start" "-a" "b800ebe9cdb6b75e730b5585badb2424d5ba55958ca60703e7b0808bf7cb66fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking arc_wrapper v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NotExport` is never constructed
[INFO] [stdout]   --> examples/simple.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub struct NotExport {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "b800ebe9cdb6b75e730b5585badb2424d5ba55958ca60703e7b0808bf7cb66fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b800ebe9cdb6b75e730b5585badb2424d5ba55958ca60703e7b0808bf7cb66fc", kill_on_drop: false }`
[INFO] [stdout] b800ebe9cdb6b75e730b5585badb2424d5ba55958ca60703e7b0808bf7cb66fc