[INFO] fetching crate mechanist 0.1.0...
[INFO] building mechanist-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate mechanist 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mechanist 0.1.0
[INFO] finished tweaking crates.io crate mechanist 0.1.0
[INFO] tweaked toml for crates.io crate mechanist 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mechanist 0.1.0 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] 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 43 packages to latest compatible versions
[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] [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 426c1abdbc8a5c24c0c5af8a1332d43ada496f6ba08cada0a51d3a35837b6c79
[INFO] running `Command { std: "docker" "start" "-a" "426c1abdbc8a5c24c0c5af8a1332d43ada496f6ba08cada0a51d3a35837b6c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "426c1abdbc8a5c24c0c5af8a1332d43ada496f6ba08cada0a51d3a35837b6c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "426c1abdbc8a5c24c0c5af8a1332d43ada496f6ba08cada0a51d3a35837b6c79", kill_on_drop: false }`
[INFO] [stdout] 426c1abdbc8a5c24c0c5af8a1332d43ada496f6ba08cada0a51d3a35837b6c79
[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=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] 9abc17d3cec82b0e94fd49d71f5d4ee56df6329478975b064927651a92868b60
[INFO] running `Command { std: "docker" "start" "-a" "9abc17d3cec82b0e94fd49d71f5d4ee56df6329478975b064927651a92868b60", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling mechanist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.70s
[INFO] running `Command { std: "docker" "inspect" "9abc17d3cec82b0e94fd49d71f5d4ee56df6329478975b064927651a92868b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9abc17d3cec82b0e94fd49d71f5d4ee56df6329478975b064927651a92868b60", kill_on_drop: false }`
[INFO] [stdout] 9abc17d3cec82b0e94fd49d71f5d4ee56df6329478975b064927651a92868b60
[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=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] 9cbf72b93707c013aad8f409fdb93f45af4fcc9eb1a6f7b4ff71ea2be33986cc
[INFO] running `Command { std: "docker" "start" "-a" "9cbf72b93707c013aad8f409fdb93f45af4fcc9eb1a6f7b4ff71ea2be33986cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling mechanist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "9cbf72b93707c013aad8f409fdb93f45af4fcc9eb1a6f7b4ff71ea2be33986cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cbf72b93707c013aad8f409fdb93f45af4fcc9eb1a6f7b4ff71ea2be33986cc", kill_on_drop: false }`
[INFO] [stdout] 9cbf72b93707c013aad8f409fdb93f45af4fcc9eb1a6f7b4ff71ea2be33986cc