[INFO] fetching crate ruverta 0.1.0...
[INFO] building ruverta-0.1.0 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate ruverta 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ruverta 0.1.0 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruverta 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ruverta 0.1.0
[INFO] tweaked toml for crates.io crate ruverta 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35b0052444685da9ec3b55c5c87e95a26328ff17bc5a89c3e72294ea7b63767e
[INFO] running `Command { std: "docker" "start" "-a" "35b0052444685da9ec3b55c5c87e95a26328ff17bc5a89c3e72294ea7b63767e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35b0052444685da9ec3b55c5c87e95a26328ff17bc5a89c3e72294ea7b63767e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b0052444685da9ec3b55c5c87e95a26328ff17bc5a89c3e72294ea7b63767e", kill_on_drop: false }`
[INFO] [stdout] 35b0052444685da9ec3b55c5c87e95a26328ff17bc5a89c3e72294ea7b63767e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f714fe8d0e79f5e806ecc1be8ff7ccaa8600688a573fed9e1f46c0a538d2a1eb
[INFO] running `Command { std: "docker" "start" "-a" "f714fe8d0e79f5e806ecc1be8ff7ccaa8600688a573fed9e1f46c0a538d2a1eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruverta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `WriteOnly` is never constructed
[INFO] [stdout]   --> src/bus/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum Reg {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 26 |     WriteOnly {
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reg` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "f714fe8d0e79f5e806ecc1be8ff7ccaa8600688a573fed9e1f46c0a538d2a1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f714fe8d0e79f5e806ecc1be8ff7ccaa8600688a573fed9e1f46c0a538d2a1eb", kill_on_drop: false }`
[INFO] [stdout] f714fe8d0e79f5e806ecc1be8ff7ccaa8600688a573fed9e1f46c0a538d2a1eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2838ece4b898297c26a789e7f75bdc3284cbf53b820e3429b988e421b81815aa
[INFO] running `Command { std: "docker" "start" "-a" "2838ece4b898297c26a789e7f75bdc3284cbf53b820e3429b988e421b81815aa", kill_on_drop: false }`
[INFO] [stdout] warning: variant `WriteOnly` is never constructed
[INFO] [stdout]   --> src/bus/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum Reg {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 26 |     WriteOnly {
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reg` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ruverta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `WriteOnly` is never constructed
[INFO] [stdout]   --> src/bus/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum Reg {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 26 |     WriteOnly {
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reg` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "2838ece4b898297c26a789e7f75bdc3284cbf53b820e3429b988e421b81815aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2838ece4b898297c26a789e7f75bdc3284cbf53b820e3429b988e421b81815aa", kill_on_drop: false }`
[INFO] [stdout] 2838ece4b898297c26a789e7f75bdc3284cbf53b820e3429b988e421b81815aa