[INFO] cloning repository https://github.com/polo-language/btree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/polo-language/btree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolo-language%2Fbtree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolo-language%2Fbtree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba28f1212a2314dc7def9c084472943140ae6046
[INFO] testing polo-language/btree against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolo-language%2Fbtree" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/polo-language/btree on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/polo-language/btree
[INFO] finished tweaking git repo https://github.com/polo-language/btree
[INFO] tweaked toml for git repo https://github.com/polo-language/btree written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/polo-language/btree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd99f7546c30da829323044859ee8b44cc2886d835c719fd375cb5611421b94f
[INFO] running `Command { std: "docker" "start" "-a" "dd99f7546c30da829323044859ee8b44cc2886d835c719fd375cb5611421b94f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd99f7546c30da829323044859ee8b44cc2886d835c719fd375cb5611421b94f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd99f7546c30da829323044859ee8b44cc2886d835c719fd375cb5611421b94f", kill_on_drop: false }`
[INFO] [stdout] dd99f7546c30da829323044859ee8b44cc2886d835c719fd375cb5611421b94f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ee8fd911255f6fcf2eb2ac523dc6b9853d0cef19272520fdcbd04056faca6a3
[INFO] running `Command { std: "docker" "start" "-a" "5ee8fd911255f6fcf2eb2ac523dc6b9853d0cef19272520fdcbd04056faca6a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling btree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "5ee8fd911255f6fcf2eb2ac523dc6b9853d0cef19272520fdcbd04056faca6a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ee8fd911255f6fcf2eb2ac523dc6b9853d0cef19272520fdcbd04056faca6a3", kill_on_drop: false }`
[INFO] [stdout] 5ee8fd911255f6fcf2eb2ac523dc6b9853d0cef19272520fdcbd04056faca6a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0f07aebdc3d47260634abfbb05620db2acf1e5c1779c600d6d2ba85e4df66e4
[INFO] running `Command { std: "docker" "start" "-a" "f0f07aebdc3d47260634abfbb05620db2acf1e5c1779c600d6d2ba85e4df66e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling btree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.50s
[INFO] running `Command { std: "docker" "inspect" "f0f07aebdc3d47260634abfbb05620db2acf1e5c1779c600d6d2ba85e4df66e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0f07aebdc3d47260634abfbb05620db2acf1e5c1779c600d6d2ba85e4df66e4", kill_on_drop: false }`
[INFO] [stdout] f0f07aebdc3d47260634abfbb05620db2acf1e5c1779c600d6d2ba85e4df66e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 031675daa8b6dc58d11fcce07b75cdbadb589fc1e3a704587738aeae27af276d
[INFO] running `Command { std: "docker" "start" "-a" "031675daa8b6dc58d11fcce07b75cdbadb589fc1e3a704587738aeae27af276d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 14 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/btree-1ca2d3f5631cd6d8)
[INFO] [stdout] test tests::new_tree ... ok
[INFO] [stdout] test node::tests::delete_from_root ... ok
[INFO] [stdout] test tests::clear ... ok
[INFO] [stdout] test tests::insert_search ... ok
[INFO] [stdout] test tests::new_tree_min_deg ... ok
[INFO] [stdout] test node::tests::new_root ... ok
[INFO] [stdout] test node::tests::update ... ok
[INFO] [stdout] test node::tests::delete ... ok
[INFO] [stdout] test node::tests::get ... ok
[INFO] [stdout] test node::tests::n_key_len ... ok
[INFO] [stdout] test node::tests::key_counts ... ok
[INFO] [stdout] test node::tests::only_one_root ... ok
[INFO] [stdout] test node::tests::child_counts ... ok
[INFO] [stdout] test node::tests::all_leaves_same_height ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 8.44s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests btree
[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" "031675daa8b6dc58d11fcce07b75cdbadb589fc1e3a704587738aeae27af276d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "031675daa8b6dc58d11fcce07b75cdbadb589fc1e3a704587738aeae27af276d", kill_on_drop: false }`
[INFO] [stdout] 031675daa8b6dc58d11fcce07b75cdbadb589fc1e3a704587738aeae27af276d