[INFO] fetching crate register-bits 0.2.3...
[INFO] building register-bits-0.2.3 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate register-bits 0.2.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate register-bits 0.2.3
[INFO] finished tweaking crates.io crate register-bits 0.2.3
[INFO] tweaked toml for crates.io crate register-bits 0.2.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate register-bits 0.2.3 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b09b52fe97c3e3145bede7a907cad355e38357763f574722148186188e5e075
[INFO] running `Command { std: "docker" "start" "-a" "6b09b52fe97c3e3145bede7a907cad355e38357763f574722148186188e5e075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b09b52fe97c3e3145bede7a907cad355e38357763f574722148186188e5e075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b09b52fe97c3e3145bede7a907cad355e38357763f574722148186188e5e075", kill_on_drop: false }`
[INFO] [stdout] 6b09b52fe97c3e3145bede7a907cad355e38357763f574722148186188e5e075
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af0a240a8f6524291ff77dd5c5d7a845ec8c24a79c3566461e4a667dc276b07d
[INFO] running `Command { std: "docker" "start" "-a" "af0a240a8f6524291ff77dd5c5d7a845ec8c24a79c3566461e4a667dc276b07d", kill_on_drop: false }`
[INFO] [stderr]    Compiling register-bits v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "af0a240a8f6524291ff77dd5c5d7a845ec8c24a79c3566461e4a667dc276b07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af0a240a8f6524291ff77dd5c5d7a845ec8c24a79c3566461e4a667dc276b07d", kill_on_drop: false }`
[INFO] [stdout] af0a240a8f6524291ff77dd5c5d7a845ec8c24a79c3566461e4a667dc276b07d
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6048663b4a16fdf29bf76c045743a6f12956bd46109abd2aa86950274e97ae
[INFO] running `Command { std: "docker" "start" "-a" "7c6048663b4a16fdf29bf76c045743a6f12956bd46109abd2aa86950274e97ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling register-bits v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PlaceholderStructNameBitSize` is never used
[INFO] [stdout]    --> src/reg_reference.rs:312:11
[INFO] [stdout]     |
[INFO] [stdout] 312 | pub trait PlaceholderStructNameBitSize {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PlaceholderStructNameDownCast` is never used
[INFO] [stdout]    --> src/reg_reference.rs:323:11
[INFO] [stdout]     |
[INFO] [stdout] 323 | pub trait PlaceholderStructNameDownCast<const T: usize>:
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PlaceholderStructNameUpCast` is never used
[INFO] [stdout]    --> src/reg_reference.rs:362:11
[INFO] [stdout]     |
[INFO] [stdout] 362 | pub trait PlaceholderStructNameUpCast<const T: usize>:
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PlaceholderStructNameConcat` is never used
[INFO] [stdout]    --> src/reg_reference.rs:439:11
[INFO] [stdout]     |
[INFO] [stdout] 439 | pub trait PlaceholderStructNameConcat<const R: usize, const O: usize>:
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "7c6048663b4a16fdf29bf76c045743a6f12956bd46109abd2aa86950274e97ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6048663b4a16fdf29bf76c045743a6f12956bd46109abd2aa86950274e97ae", kill_on_drop: false }`
[INFO] [stdout] 7c6048663b4a16fdf29bf76c045743a6f12956bd46109abd2aa86950274e97ae