[INFO] fetching crate serialize-to-javascript 0.1.2...
[INFO] checking serialize-to-javascript-0.1.2 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate serialize-to-javascript 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate serialize-to-javascript 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serialize-to-javascript 0.1.2
[INFO] tweaked toml for crates.io crate serialize-to-javascript 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialize-to-javascript 0.1.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1079d27d027db2f1b585befdfbe24f56452d2e28377cc09674d6f766cc07f2a7
[INFO] running `Command { std: "docker" "start" "-a" "1079d27d027db2f1b585befdfbe24f56452d2e28377cc09674d6f766cc07f2a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1079d27d027db2f1b585befdfbe24f56452d2e28377cc09674d6f766cc07f2a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1079d27d027db2f1b585befdfbe24f56452d2e28377cc09674d6f766cc07f2a7", kill_on_drop: false }`
[INFO] [stdout] 1079d27d027db2f1b585befdfbe24f56452d2e28377cc09674d6f766cc07f2a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 232b36d0c0b3be6e56a776aabde9f8dfad7f8c756a213d1b89c44bb15b250ee1
[INFO] running `Command { std: "docker" "start" "-a" "232b36d0c0b3be6e56a776aabde9f8dfad7f8c756a213d1b89c44bb15b250ee1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling serialize-to-javascript-impl v0.1.2
[INFO] [stderr]     Checking serialize-to-javascript v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Foo` is never constructed
[INFO] [stdout]  --> tests/mixed.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Foo<'a> {
[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 `serialize-to-javascript` (test "mixed") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "232b36d0c0b3be6e56a776aabde9f8dfad7f8c756a213d1b89c44bb15b250ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232b36d0c0b3be6e56a776aabde9f8dfad7f8c756a213d1b89c44bb15b250ee1", kill_on_drop: false }`
[INFO] [stdout] 232b36d0c0b3be6e56a776aabde9f8dfad7f8c756a213d1b89c44bb15b250ee1
