[INFO] fetching crate k2_tree 0.5.3...
[INFO] building k2_tree-0.5.3 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate k2_tree 0.5.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate k2_tree 0.5.3
[INFO] finished tweaking crates.io crate k2_tree 0.5.3
[INFO] tweaked toml for crates.io crate k2_tree 0.5.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate k2_tree 0.5.3 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding bitvec v0.17.4 (available: v1.0.1)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.10.0)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9db5f80c9d7448cf8b2cc774939af29ae54301397ab8b460077f22288b62ad4
[INFO] running `Command { std: "docker" "start" "-a" "b9db5f80c9d7448cf8b2cc774939af29ae54301397ab8b460077f22288b62ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9db5f80c9d7448cf8b2cc774939af29ae54301397ab8b460077f22288b62ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9db5f80c9d7448cf8b2cc774939af29ae54301397ab8b460077f22288b62ad4", kill_on_drop: false }`
[INFO] [stdout] b9db5f80c9d7448cf8b2cc774939af29ae54301397ab8b460077f22288b62ad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 632358ad26558eacf39286e292e843d647d51f496c125f1b1be51329d9b7e628
[INFO] running `Command { std: "docker" "start" "-a" "632358ad26558eacf39286e292e843d647d51f496c125f1b1be51329d9b7e628", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling k2_tree v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `datastore::*`
[INFO] [stdout]  --> src/tree/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use datastore::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `Command { std: "docker" "inspect" "632358ad26558eacf39286e292e843d647d51f496c125f1b1be51329d9b7e628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "632358ad26558eacf39286e292e843d647d51f496c125f1b1be51329d9b7e628", kill_on_drop: false }`
[INFO] [stdout] 632358ad26558eacf39286e292e843d647d51f496c125f1b1be51329d9b7e628
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa43669a5be82e6ef035d8efb4c52eac16ef4ce177f12bb20fd5c953b842ed57
[INFO] running `Command { std: "docker" "start" "-a" "aa43669a5be82e6ef035d8efb4c52eac16ef4ce177f12bb20fd5c953b842ed57", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stdout] warning: unused import: `datastore::*`
[INFO] [stdout]  --> src/tree/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use datastore::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling serde_json v1.0.149
[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 k2_tree v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: rustc interrupted by SIGSEGV, printing backtrace
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x3b25a2c)[0x7134e3925a2c]
[INFO] [stderr] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7134dfc33330]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b3)[0x7134e5ce03b3]
[INFO] [stderr] 
[INFO] [stderr] ### cycle encountered after 3 frames with period 4
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b8)[0x7134e5ce03b8]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b8)[0x7134e5ce03b8]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b8)[0x7134e5ce03b8]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b8)[0x7134e5ce03b8]
[INFO] [stderr] ### recursed 63 times
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/lib/librustc_driver-60773078dce5155c.so(+0x5ee03b8)[0x7134e5ce03b8]
[INFO] [stderr] 
[INFO] [stderr] note: rustc unexpectedly overflowed its stack! this is a bug
[INFO] [stderr] note: maximum backtrace depth reached, frames may have been lost
[INFO] [stderr] note: we would appreciate a report at https://github.com/rust-lang/rust
[INFO] [stderr] help: you can increase rustc's stack size by setting RUST_MIN_STACK=16777216
[INFO] [stderr] error: could not compile `k2_tree` (lib test)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/0abe69e6c16114311cc2700e972492e64d69c28f/bin/rustc --crate-name k2_tree --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=5da090838678b8e3 -C extra-filename=-bad23d6c741e49f1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitvec=/opt/rustwide/target/debug/deps/libbitvec-79e640501b5846c8.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-f1eff43d66b08220.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-135cf3cae6658505.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-9a021ef7d2829b51.rlib --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-a8a91747e3396108.rlib --cap-lints=forbid` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "aa43669a5be82e6ef035d8efb4c52eac16ef4ce177f12bb20fd5c953b842ed57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa43669a5be82e6ef035d8efb4c52eac16ef4ce177f12bb20fd5c953b842ed57", kill_on_drop: false }`
[INFO] [stdout] aa43669a5be82e6ef035d8efb4c52eac16ef4ce177f12bb20fd5c953b842ed57
