[INFO] fetching crate undo_stack 0.2.4...
[INFO] testing undo_stack-0.2.4 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate undo_stack 0.2.4 into /workspace/builds/worker-0-tc1/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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate undo_stack 0.2.4 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4d0caddb4aec082c0922c93e0b50819731ae2b81388b811b8ae1fcd785ea0f2
[INFO] running `Command { std: "docker" "start" "-a" "a4d0caddb4aec082c0922c93e0b50819731ae2b81388b811b8ae1fcd785ea0f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d0caddb4aec082c0922c93e0b50819731ae2b81388b811b8ae1fcd785ea0f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d0caddb4aec082c0922c93e0b50819731ae2b81388b811b8ae1fcd785ea0f2", kill_on_drop: false }`
[INFO] [stdout] a4d0caddb4aec082c0922c93e0b50819731ae2b81388b811b8ae1fcd785ea0f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6dbca71bc321bdb6339d219411a53b8debda33ed1e62bfe71e85bf9645b402
[INFO] running `Command { std: "docker" "start" "-a" "7c6dbca71bc321bdb6339d219411a53b8debda33ed1e62bfe71e85bf9645b402", 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 0.30s
[INFO] running `Command { std: "docker" "inspect" "7c6dbca71bc321bdb6339d219411a53b8debda33ed1e62bfe71e85bf9645b402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6dbca71bc321bdb6339d219411a53b8debda33ed1e62bfe71e85bf9645b402", kill_on_drop: false }`
[INFO] [stdout] 7c6dbca71bc321bdb6339d219411a53b8debda33ed1e62bfe71e85bf9645b402
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82e08388baa39bee9093294dffd756e7168c20d4e23b60553b98332934b2cbe0
[INFO] running `Command { std: "docker" "start" "-a" "82e08388baa39bee9093294dffd756e7168c20d4e23b60553b98332934b2cbe0", 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 0.20s
[INFO] running `Command { std: "docker" "inspect" "82e08388baa39bee9093294dffd756e7168c20d4e23b60553b98332934b2cbe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e08388baa39bee9093294dffd756e7168c20d4e23b60553b98332934b2cbe0", kill_on_drop: false }`
[INFO] [stdout] 82e08388baa39bee9093294dffd756e7168c20d4e23b60553b98332934b2cbe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 567bbc796f752061e6cbc548d9a85786a5756a543320e21a6044c841788d0213
[INFO] running `Command { std: "docker" "start" "-a" "567bbc796f752061e6cbc548d9a85786a5756a543320e21a6044c841788d0213", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/undo_stack-3fbd3f3611f9f8c3)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests undo_stack
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "567bbc796f752061e6cbc548d9a85786a5756a543320e21a6044c841788d0213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "567bbc796f752061e6cbc548d9a85786a5756a543320e21a6044c841788d0213", kill_on_drop: false }`
[INFO] [stdout] 567bbc796f752061e6cbc548d9a85786a5756a543320e21a6044c841788d0213