[INFO] fetching crate unit20 0.1.0...
[INFO] building unit20-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate unit20 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate unit20 0.1.0
[INFO] finished tweaking crates.io crate unit20 0.1.0
[INFO] tweaked toml for crates.io crate unit20 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unit20 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] crate crates.io crate unit20 0.1.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88c7de847c0042d7991d8009da5cbf34dbc26ed8f08f1a398b8f4e79bd8e7f81
[INFO] running `Command { std: "docker" "start" "-a" "88c7de847c0042d7991d8009da5cbf34dbc26ed8f08f1a398b8f4e79bd8e7f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88c7de847c0042d7991d8009da5cbf34dbc26ed8f08f1a398b8f4e79bd8e7f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88c7de847c0042d7991d8009da5cbf34dbc26ed8f08f1a398b8f4e79bd8e7f81", kill_on_drop: false }`
[INFO] [stdout] 88c7de847c0042d7991d8009da5cbf34dbc26ed8f08f1a398b8f4e79bd8e7f81
[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] be6f66dbc04c17f46d9e74907fb392c935f63452577d874560ebf6a3ad514ef6
[INFO] running `Command { std: "docker" "start" "-a" "be6f66dbc04c17f46d9e74907fb392c935f63452577d874560ebf6a3ad514ef6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unit20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "be6f66dbc04c17f46d9e74907fb392c935f63452577d874560ebf6a3ad514ef6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be6f66dbc04c17f46d9e74907fb392c935f63452577d874560ebf6a3ad514ef6", kill_on_drop: false }`
[INFO] [stdout] be6f66dbc04c17f46d9e74907fb392c935f63452577d874560ebf6a3ad514ef6
[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] 1098520c2280e906699f3c5d9c2b7cca324edb5b3ef7f754ab9ab7e027036c12
[INFO] running `Command { std: "docker" "start" "-a" "1098520c2280e906699f3c5d9c2b7cca324edb5b3ef7f754ab9ab7e027036c12", kill_on_drop: false }`
[INFO] [stderr]    Compiling unit20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "1098520c2280e906699f3c5d9c2b7cca324edb5b3ef7f754ab9ab7e027036c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1098520c2280e906699f3c5d9c2b7cca324edb5b3ef7f754ab9ab7e027036c12", kill_on_drop: false }`
[INFO] [stdout] 1098520c2280e906699f3c5d9c2b7cca324edb5b3ef7f754ab9ab7e027036c12