[INFO] fetching crate umt_rust 0.2.0...
[INFO] building umt_rust-0.2.0 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate umt_rust 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate umt_rust 0.2.0 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 umt_rust 0.2.0
[INFO] finished tweaking crates.io crate umt_rust 0.2.0
[INFO] tweaked toml for crates.io crate umt_rust 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate umt_rust 0.2.0 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 93fbd61f055fffab4a263e228d8e14071ee87f263e9c38c2bea13e8a0aba9163
[INFO] running `Command { std: "docker" "start" "-a" "93fbd61f055fffab4a263e228d8e14071ee87f263e9c38c2bea13e8a0aba9163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93fbd61f055fffab4a263e228d8e14071ee87f263e9c38c2bea13e8a0aba9163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93fbd61f055fffab4a263e228d8e14071ee87f263e9c38c2bea13e8a0aba9163", kill_on_drop: false }`
[INFO] [stdout] 93fbd61f055fffab4a263e228d8e14071ee87f263e9c38c2bea13e8a0aba9163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7028a9436780be69bb186a50dedec7e6c0ccb8c1bc3f4600bed1bcc7a632eb50
[INFO] running `Command { std: "docker" "start" "-a" "7028a9436780be69bb186a50dedec7e6c0ccb8c1bc3f4600bed1bcc7a632eb50", kill_on_drop: false }`
[INFO] [stderr]    Compiling umt_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "7028a9436780be69bb186a50dedec7e6c0ccb8c1bc3f4600bed1bcc7a632eb50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7028a9436780be69bb186a50dedec7e6c0ccb8c1bc3f4600bed1bcc7a632eb50", kill_on_drop: false }`
[INFO] [stdout] 7028a9436780be69bb186a50dedec7e6c0ccb8c1bc3f4600bed1bcc7a632eb50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] da86133d179de5c929a39c5bbd69b5d87a137062ebfa8bb5f405534fbf438bae
[INFO] running `Command { std: "docker" "start" "-a" "da86133d179de5c929a39c5bbd69b5d87a137062ebfa8bb5f405534fbf438bae", kill_on_drop: false }`
[INFO] [stderr]    Compiling umt_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "da86133d179de5c929a39c5bbd69b5d87a137062ebfa8bb5f405534fbf438bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da86133d179de5c929a39c5bbd69b5d87a137062ebfa8bb5f405534fbf438bae", kill_on_drop: false }`
[INFO] [stdout] da86133d179de5c929a39c5bbd69b5d87a137062ebfa8bb5f405534fbf438bae