[INFO] fetching crate piston-history_tree 0.1.0...
[INFO] testing piston-history_tree-0.1.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate piston-history_tree 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate piston-history_tree 0.1.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piston-history_tree 0.1.0
[INFO] finished tweaking crates.io crate piston-history_tree 0.1.0
[INFO] tweaked toml for crates.io crate piston-history_tree 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2ce256a4c299e11ffbc3468184a16d8c2d66e0a13b09f6511ed61c03f2ce781
[INFO] running `Command { std: "docker" "start" "-a" "f2ce256a4c299e11ffbc3468184a16d8c2d66e0a13b09f6511ed61c03f2ce781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ce256a4c299e11ffbc3468184a16d8c2d66e0a13b09f6511ed61c03f2ce781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ce256a4c299e11ffbc3468184a16d8c2d66e0a13b09f6511ed61c03f2ce781", kill_on_drop: false }`
[INFO] [stdout] f2ce256a4c299e11ffbc3468184a16d8c2d66e0a13b09f6511ed61c03f2ce781
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72f47677a04965eec72c248806964848228d869e8f60eaef1471b9eaf331fd96
[INFO] running `Command { std: "docker" "start" "-a" "72f47677a04965eec72c248806964848228d869e8f60eaef1471b9eaf331fd96", kill_on_drop: false }`
[INFO] [stderr]    Compiling piston-history_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "72f47677a04965eec72c248806964848228d869e8f60eaef1471b9eaf331fd96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f47677a04965eec72c248806964848228d869e8f60eaef1471b9eaf331fd96", kill_on_drop: false }`
[INFO] [stdout] 72f47677a04965eec72c248806964848228d869e8f60eaef1471b9eaf331fd96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e554b8c9dfd536c2bcfcedd77f73dd44b45978abc25455df1b00b620ddad4403
[INFO] running `Command { std: "docker" "start" "-a" "e554b8c9dfd536c2bcfcedd77f73dd44b45978abc25455df1b00b620ddad4403", kill_on_drop: false }`
[INFO] [stderr]    Compiling piston-history_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "e554b8c9dfd536c2bcfcedd77f73dd44b45978abc25455df1b00b620ddad4403", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e554b8c9dfd536c2bcfcedd77f73dd44b45978abc25455df1b00b620ddad4403", kill_on_drop: false }`
[INFO] [stdout] e554b8c9dfd536c2bcfcedd77f73dd44b45978abc25455df1b00b620ddad4403
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8373c91b762943529a0058890b1c4d7ac2906d54ed9e487253b56ba12d07912f
[INFO] running `Command { std: "docker" "start" "-a" "8373c91b762943529a0058890b1c4d7ac2906d54ed9e487253b56ba12d07912f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/history_tree-f19e07d548699fef)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests history_tree
[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" "8373c91b762943529a0058890b1c4d7ac2906d54ed9e487253b56ba12d07912f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8373c91b762943529a0058890b1c4d7ac2906d54ed9e487253b56ba12d07912f", kill_on_drop: false }`
[INFO] [stdout] 8373c91b762943529a0058890b1c4d7ac2906d54ed9e487253b56ba12d07912f