[INFO] cloning repository https://github.com/1000teslas/tree_traversal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1000teslas/tree_traversal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Ftree_traversal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Ftree_traversal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2558f69dd7e1e3e5041c010976e999b5c83cab7f
[INFO] testing 1000teslas/tree_traversal against master#c5842b0be783dffa5a49693541acb79115c7eeef for pr-102570
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Ftree_traversal" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/1000teslas/tree_traversal on toolchain c5842b0be783dffa5a49693541acb79115c7eeef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/1000teslas/tree_traversal
[INFO] finished tweaking git repo https://github.com/1000teslas/tree_traversal
[INFO] tweaked toml for git repo https://github.com/1000teslas/tree_traversal written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/1000teslas/tree_traversal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded syn v1.0.41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c50d612f78ac4ff77d60378550964ff55f46bb48483fccd80b5e7c842e6450e6
[INFO] running `Command { std: "docker" "start" "-a" "c50d612f78ac4ff77d60378550964ff55f46bb48483fccd80b5e7c842e6450e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c50d612f78ac4ff77d60378550964ff55f46bb48483fccd80b5e7c842e6450e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c50d612f78ac4ff77d60378550964ff55f46bb48483fccd80b5e7c842e6450e6", kill_on_drop: false }`
[INFO] [stdout] c50d612f78ac4ff77d60378550964ff55f46bb48483fccd80b5e7c842e6450e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54d7a0c2f1cbd1fb1e8e5921b9b87d5b13e10ab063d1f293d0cc8a73beb4808b
[INFO] running `Command { std: "docker" "start" "-a" "54d7a0c2f1cbd1fb1e8e5921b9b87d5b13e10ab063d1f293d0cc8a73beb4808b", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling tree_traversal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "54d7a0c2f1cbd1fb1e8e5921b9b87d5b13e10ab063d1f293d0cc8a73beb4808b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54d7a0c2f1cbd1fb1e8e5921b9b87d5b13e10ab063d1f293d0cc8a73beb4808b", kill_on_drop: false }`
[INFO] [stdout] 54d7a0c2f1cbd1fb1e8e5921b9b87d5b13e10ab063d1f293d0cc8a73beb4808b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d5b30ffd17bfc6f72abb82b3b87aef70c0a4257889010e7aa92e80083a297fe
[INFO] running `Command { std: "docker" "start" "-a" "9d5b30ffd17bfc6f72abb82b3b87aef70c0a4257889010e7aa92e80083a297fe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]    Compiling tree_traversal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.39s
[INFO] running `Command { std: "docker" "inspect" "9d5b30ffd17bfc6f72abb82b3b87aef70c0a4257889010e7aa92e80083a297fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d5b30ffd17bfc6f72abb82b3b87aef70c0a4257889010e7aa92e80083a297fe", kill_on_drop: false }`
[INFO] [stdout] 9d5b30ffd17bfc6f72abb82b3b87aef70c0a4257889010e7aa92e80083a297fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+c5842b0be783dffa5a49693541acb79115c7eeef" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec4b62ada626a1567181782d44adb47ed4daf0942594b2f8e28fbf5ce78bbcf4
[INFO] running `Command { std: "docker" "start" "-a" "ec4b62ada626a1567181782d44adb47ed4daf0942594b2f8e28fbf5ce78bbcf4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_traversal-622be5d0d438360a)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test::test_3 ... ok
[INFO] [stdout] test test::test_4 ... ok
[INFO] [stdout] test test::test_1 ... ok
[INFO] [stdout] test test::test_2 ... ok
[INFO] [stdout] test test::test_traverse ... ok
[INFO] [stdout] test test::test_stack_to_queue ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'test::test_bf_traverse' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/tree_traversal-622be5d0d438360a` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "ec4b62ada626a1567181782d44adb47ed4daf0942594b2f8e28fbf5ce78bbcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4b62ada626a1567181782d44adb47ed4daf0942594b2f8e28fbf5ce78bbcf4", kill_on_drop: false }`
[INFO] [stdout] ec4b62ada626a1567181782d44adb47ed4daf0942594b2f8e28fbf5ce78bbcf4