[INFO] fetching crate thread-tree 0.3.2...
[INFO] testing thread-tree-0.3.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate thread-tree 0.3.2 into /workspace/builds/worker-103/source
[INFO] validating manifest of crates.io crate thread-tree 0.3.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thread-tree 0.3.2
[INFO] finished tweaking crates.io crate thread-tree 0.3.2
[INFO] tweaked toml for crates.io crate thread-tree 0.3.2 written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc687166beb051e30b2f69056e9823d351679fa6d8281d0cff273da701a62ad1
[INFO] running `Command { std: "docker" "start" "-a" "bc687166beb051e30b2f69056e9823d351679fa6d8281d0cff273da701a62ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc687166beb051e30b2f69056e9823d351679fa6d8281d0cff273da701a62ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc687166beb051e30b2f69056e9823d351679fa6d8281d0cff273da701a62ad1", kill_on_drop: false }`
[INFO] [stdout] bc687166beb051e30b2f69056e9823d351679fa6d8281d0cff273da701a62ad1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1732e9c2b9b245c78295c65eb072799d15e86603533666663f12504186d6a9d8
[INFO] running `Command { std: "docker" "start" "-a" "1732e9c2b9b245c78295c65eb072799d15e86603533666663f12504186d6a9d8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling thread-tree v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `Command { std: "docker" "inspect" "1732e9c2b9b245c78295c65eb072799d15e86603533666663f12504186d6a9d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1732e9c2b9b245c78295c65eb072799d15e86603533666663f12504186d6a9d8", kill_on_drop: false }`
[INFO] [stdout] 1732e9c2b9b245c78295c65eb072799d15e86603533666663f12504186d6a9d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eeb05800444d643184677031c3e46266bb0e77dd422efda62d3bb65689a2eec
[INFO] running `Command { std: "docker" "start" "-a" "0eeb05800444d643184677031c3e46266bb0e77dd422efda62d3bb65689a2eec", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling thread-tree v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `Command { std: "docker" "inspect" "0eeb05800444d643184677031c3e46266bb0e77dd422efda62d3bb65689a2eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eeb05800444d643184677031c3e46266bb0e77dd422efda62d3bb65689a2eec", kill_on_drop: false }`
[INFO] [stdout] 0eeb05800444d643184677031c3e46266bb0e77dd422efda62d3bb65689a2eec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9e5552cbd7522fe8f5cdbd0853db3f10fe341b044bd23d9df4a286540917f2ce
[INFO] running `Command { std: "docker" "start" "-a" "9e5552cbd7522fe8f5cdbd0853db3f10fe341b044bd23d9df4a286540917f2ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/thread_tree-4a2f064fbf236bae)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test thread_tree_tests::build_level_2 ... ok
[INFO] [stdout] test thread_tree_tests::stub ... ok
[INFO] [stdout] test thread_tree_tests::new_level_1 ... ok
[INFO] [stdout] test thread_tree_tests::panic_a - should panic ... ok
[INFO] [stdout] test thread_tree_tests::panic_b - should panic ... ok
[INFO] [stdout] test thread_tree_tests::panic_both_bottom - should panic ... ok
[INFO] [stdout] test thread_tree_tests::panic_both_in_threads - should panic ... ok
[INFO] [stdout] test thread_tree_tests::on_panic_a_wait_for_b ... ok
[INFO] [stdout] test thread_tree_tests::overload_2_2 ... ok
[INFO] [stdout] test thread_tree_tests::deep_tree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests thread-tree
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - ThreadTree::top (line 231) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9e5552cbd7522fe8f5cdbd0853db3f10fe341b044bd23d9df4a286540917f2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e5552cbd7522fe8f5cdbd0853db3f10fe341b044bd23d9df4a286540917f2ce", kill_on_drop: false }`
[INFO] [stdout] 9e5552cbd7522fe8f5cdbd0853db3f10fe341b044bd23d9df4a286540917f2ce