[INFO] fetching crate scroll 0.13.0...
[INFO] building scroll-0.13.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate scroll 0.13.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate scroll 0.13.0
[INFO] finished tweaking crates.io crate scroll 0.13.0
[INFO] tweaked toml for crates.io crate scroll 0.13.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scroll 0.13.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scroll 0.13.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78278c6380843b208eadba792ede233e4505b19b6a1f77074e888430fa571805
[INFO] running `Command { std: "docker" "start" "-a" "78278c6380843b208eadba792ede233e4505b19b6a1f77074e888430fa571805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78278c6380843b208eadba792ede233e4505b19b6a1f77074e888430fa571805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78278c6380843b208eadba792ede233e4505b19b6a1f77074e888430fa571805", kill_on_drop: false }`
[INFO] [stdout] 78278c6380843b208eadba792ede233e4505b19b6a1f77074e888430fa571805
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99b80113fbc4bd35729a2fe859ae7647120d715cc5de6da20a36848c689353be
[INFO] running `Command { std: "docker" "start" "-a" "99b80113fbc4bd35729a2fe859ae7647120d715cc5de6da20a36848c689353be", kill_on_drop: false }`
[INFO] [stderr]    Compiling scroll v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "99b80113fbc4bd35729a2fe859ae7647120d715cc5de6da20a36848c689353be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99b80113fbc4bd35729a2fe859ae7647120d715cc5de6da20a36848c689353be", kill_on_drop: false }`
[INFO] [stdout] 99b80113fbc4bd35729a2fe859ae7647120d715cc5de6da20a36848c689353be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5ea5ddf6e9b93a58b2e64fdb3179a3fcdb4d8333c92b4dbcb3937d663c66cb7
[INFO] running `Command { std: "docker" "start" "-a" "d5ea5ddf6e9b93a58b2e64fdb3179a3fcdb4d8333c92b4dbcb3937d663c66cb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling scroll v0.13.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExternalError` is never constructed
[INFO] [stdout]    --> src/lib.rs:433:16
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub struct ExternalError {}
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]    --> src/lib.rs:461:16
[INFO] [stdout]     |
[INFO] [stdout] 461 |     pub struct Foo(u16);
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "d5ea5ddf6e9b93a58b2e64fdb3179a3fcdb4d8333c92b4dbcb3937d663c66cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ea5ddf6e9b93a58b2e64fdb3179a3fcdb4d8333c92b4dbcb3937d663c66cb7", kill_on_drop: false }`
[INFO] [stdout] d5ea5ddf6e9b93a58b2e64fdb3179a3fcdb4d8333c92b4dbcb3937d663c66cb7