[INFO] fetching crate nimrodshn-btree 0.1.0...
[INFO] testing nimrodshn-btree-0.1.0 against try#bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b for pr-154756
[INFO] extracting crate nimrodshn-btree 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate nimrodshn-btree 0.1.0
[INFO] finished tweaking crates.io crate nimrodshn-btree 0.1.0
[INFO] tweaked toml for crates.io crate nimrodshn-btree 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nimrodshn-btree 0.1.0 on toolchain bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "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" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.23.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b48ae6c382b9acffd23b6e9b529b1d4d74a113602537276c6e059613a75fb40d
[INFO] running `Command { std: "docker" "start" "-a" "b48ae6c382b9acffd23b6e9b529b1d4d74a113602537276c6e059613a75fb40d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b48ae6c382b9acffd23b6e9b529b1d4d74a113602537276c6e059613a75fb40d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48ae6c382b9acffd23b6e9b529b1d4d74a113602537276c6e059613a75fb40d", kill_on_drop: false }`
[INFO] [stdout] b48ae6c382b9acffd23b6e9b529b1d4d74a113602537276c6e059613a75fb40d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e39ff9ffb325451172133ce7c1eb6382864e05d3ae4a8c472cea4ef526e90b2b
[INFO] running `Command { std: "docker" "start" "-a" "e39ff9ffb325451172133ce7c1eb6382864e05d3ae4a8c472cea4ef526e90b2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling nimrodshn-btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `Command { std: "docker" "inspect" "e39ff9ffb325451172133ce7c1eb6382864e05d3ae4a8c472cea4ef526e90b2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e39ff9ffb325451172133ce7c1eb6382864e05d3ae4a8c472cea4ef526e90b2b", kill_on_drop: false }`
[INFO] [stdout] e39ff9ffb325451172133ce7c1eb6382864e05d3ae4a8c472cea4ef526e90b2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5913e16af741b76fcb0698d925f765934bab554ac1d33167b8c6f1ade341d3c
[INFO] running `Command { std: "docker" "start" "-a" "a5913e16af741b76fcb0698d925f765934bab554ac1d33167b8c6f1ade341d3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling nimrodshn-btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "a5913e16af741b76fcb0698d925f765934bab554ac1d33167b8c6f1ade341d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5913e16af741b76fcb0698d925f765934bab554ac1d33167b8c6f1ade341d3c", kill_on_drop: false }`
[INFO] [stdout] a5913e16af741b76fcb0698d925f765934bab554ac1d33167b8c6f1ade341d3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbf43bc9d5c8ad2a2e38c9004e5a59b269820b3b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fdd693dfa490a79032db0c6e9021cb4b66086b755bbe68972ad42eb0a536042e
[INFO] running `Command { std: "docker" "start" "-a" "fdd693dfa490a79032db0c6e9021cb4b66086b755bbe68972ad42eb0a536042e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/btree-24e65643cef6c64f)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test node::tests::page_to_node_works_for_internal_node ... ok
[INFO] [stdout] test node::tests::page_to_node_works_for_leaf_node ... ok
[INFO] [stdout] test node::tests::split_internal_works ... ok
[INFO] [stdout] test page::tests::node_to_page_works_for_leaf_node ... ok
[INFO] [stdout] test node::tests::split_leaf_works ... ok
[INFO] [stdout] test page::tests::node_to_page_works_for_internal_node ... ok
[INFO] [stdout] test btree::tests::delete_works ... ok
[INFO] [stdout] test btree::tests::delete_with_empty_sub_tree ... FAILED
[INFO] [stdout] test btree::tests::search_works ... FAILED
[INFO] [stdout] test btree::tests::insert_works ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- btree::tests::delete_with_empty_sub_tree stdout ----
[INFO] [stdout] Error: UnexpectedError
[INFO] [stdout] 
[INFO] [stdout] ---- btree::tests::search_works stdout ----
[INFO] [stdout] Error: KeyNotFound
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     btree::tests::delete_with_empty_sub_tree
[INFO] [stdout]     btree::tests::search_works
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 8 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "fdd693dfa490a79032db0c6e9021cb4b66086b755bbe68972ad42eb0a536042e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd693dfa490a79032db0c6e9021cb4b66086b755bbe68972ad42eb0a536042e", kill_on_drop: false }`
[INFO] [stdout] fdd693dfa490a79032db0c6e9021cb4b66086b755bbe68972ad42eb0a536042e