[INFO] fetching crate slash 0.1.1...
[INFO] building slash-0.1.1 against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] extracting crate slash 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate slash 0.1.1 on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slash 0.1.1
[INFO] finished tweaking crates.io crate slash 0.1.1
[INFO] tweaked toml for crates.io crate slash 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate slash 0.1.1 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ee1f1466138a0d4df9f8881b33421905b6a7abab7e3b13b2e31b86cee4a47f6
[INFO] running `Command { std: "docker" "start" "-a" "6ee1f1466138a0d4df9f8881b33421905b6a7abab7e3b13b2e31b86cee4a47f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ee1f1466138a0d4df9f8881b33421905b6a7abab7e3b13b2e31b86cee4a47f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ee1f1466138a0d4df9f8881b33421905b6a7abab7e3b13b2e31b86cee4a47f6", kill_on_drop: false }`
[INFO] [stdout] 6ee1f1466138a0d4df9f8881b33421905b6a7abab7e3b13b2e31b86cee4a47f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c42b51f153599ca86b0c8387cf93eded39af063c1cb0fe7a2c952c9303ca01ed
[INFO] running `Command { std: "docker" "start" "-a" "c42b51f153599ca86b0c8387cf93eded39af063c1cb0fe7a2c952c9303ca01ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling slash v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "c42b51f153599ca86b0c8387cf93eded39af063c1cb0fe7a2c952c9303ca01ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c42b51f153599ca86b0c8387cf93eded39af063c1cb0fe7a2c952c9303ca01ed", kill_on_drop: false }`
[INFO] [stdout] c42b51f153599ca86b0c8387cf93eded39af063c1cb0fe7a2c952c9303ca01ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a1ae3869c52ebecb465d7d02bb9498240d45b804764d2b613d928ff865eb6a6
[INFO] running `Command { std: "docker" "start" "-a" "0a1ae3869c52ebecb465d7d02bb9498240d45b804764d2b613d928ff865eb6a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling slash v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "0a1ae3869c52ebecb465d7d02bb9498240d45b804764d2b613d928ff865eb6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a1ae3869c52ebecb465d7d02bb9498240d45b804764d2b613d928ff865eb6a6", kill_on_drop: false }`
[INFO] [stdout] 0a1ae3869c52ebecb465d7d02bb9498240d45b804764d2b613d928ff865eb6a6