[INFO] fetching crate undo_stack 0.2.4...
[INFO] building undo_stack-0.2.4 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate undo_stack 0.2.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate undo_stack 0.2.4
[INFO] finished tweaking crates.io crate undo_stack 0.2.4
[INFO] tweaked toml for crates.io crate undo_stack 0.2.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate undo_stack 0.2.4 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e6348af0d56fbba4d168e2b5ce18a7c922f219da55f68d9c5f4e9b81e621e66
[INFO] running `Command { std: "docker" "start" "-a" "9e6348af0d56fbba4d168e2b5ce18a7c922f219da55f68d9c5f4e9b81e621e66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e6348af0d56fbba4d168e2b5ce18a7c922f219da55f68d9c5f4e9b81e621e66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e6348af0d56fbba4d168e2b5ce18a7c922f219da55f68d9c5f4e9b81e621e66", kill_on_drop: false }`
[INFO] [stdout] 9e6348af0d56fbba4d168e2b5ce18a7c922f219da55f68d9c5f4e9b81e621e66
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d7f64ca72719b40a6c4c6fbbc5f4287568c25f7b0caaba15ac055f88fa21326
[INFO] running `Command { std: "docker" "start" "-a" "6d7f64ca72719b40a6c4c6fbbc5f4287568c25f7b0caaba15ac055f88fa21326", kill_on_drop: false }`
[INFO] [stderr]    Compiling undo_stack v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "6d7f64ca72719b40a6c4c6fbbc5f4287568c25f7b0caaba15ac055f88fa21326", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d7f64ca72719b40a6c4c6fbbc5f4287568c25f7b0caaba15ac055f88fa21326", kill_on_drop: false }`
[INFO] [stdout] 6d7f64ca72719b40a6c4c6fbbc5f4287568c25f7b0caaba15ac055f88fa21326
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffcd98c73ba4e899c982f08eb3187f60f51d46ac23d73c97666e0c4f6a3a43f8
[INFO] running `Command { std: "docker" "start" "-a" "ffcd98c73ba4e899c982f08eb3187f60f51d46ac23d73c97666e0c4f6a3a43f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling undo_stack v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "ffcd98c73ba4e899c982f08eb3187f60f51d46ac23d73c97666e0c4f6a3a43f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffcd98c73ba4e899c982f08eb3187f60f51d46ac23d73c97666e0c4f6a3a43f8", kill_on_drop: false }`
[INFO] [stdout] ffcd98c73ba4e899c982f08eb3187f60f51d46ac23d73c97666e0c4f6a3a43f8