[INFO] cloning repository https://github.com/SpadeA-Tang/skiplist-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SpadeA-Tang/skiplist-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpadeA-Tang%2Fskiplist-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpadeA-Tang%2Fskiplist-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9d27501ddfc17d6df9afababcaa6280f1af9e77
[INFO] testing SpadeA-Tang/skiplist-rs against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpadeA-Tang%2Fskiplist-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SpadeA-Tang/skiplist-rs
[INFO] finished tweaking git repo https://github.com/SpadeA-Tang/skiplist-rs
[INFO] tweaked toml for git repo https://github.com/SpadeA-Tang/skiplist-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SpadeA-Tang/skiplist-rs on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SpadeA-Tang/skiplist-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fail v0.5.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.78
[INFO] [stderr]   Downloaded tikv-jemalloc-ctl v0.5.4
[INFO] [stderr]   Downloaded loom v0.7.1
[INFO] [stderr]   Downloaded regex-automata v0.4.4
[INFO] [stderr]   Downloaded slog v2.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfbe8bb204a6d612998ab8e246cc4d9e47f790e8f36825a68346642ef974e479
[INFO] running `Command { std: "docker" "start" "-a" "cfbe8bb204a6d612998ab8e246cc4d9e47f790e8f36825a68346642ef974e479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfbe8bb204a6d612998ab8e246cc4d9e47f790e8f36825a68346642ef974e479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfbe8bb204a6d612998ab8e246cc4d9e47f790e8f36825a68346642ef974e479", kill_on_drop: false }`
[INFO] [stdout] cfbe8bb204a6d612998ab8e246cc4d9e47f790e8f36825a68346642ef974e479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b4a701571d1c9be762dba1320a3b7b7373b97131bb4586f825217f9400db380
[INFO] running `Command { std: "docker" "start" "-a" "7b4a701571d1c9be762dba1320a3b7b7373b97131bb4586f825217f9400db380", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tikv-jemalloc-sys v0.5.4+5.3.0-patched
[INFO] [stderr]    Compiling fail v0.5.1
[INFO] [stderr]    Compiling tikv-jemalloc-ctl v0.5.4
[INFO] [stderr]    Compiling tikv-jemallocator v0.5.4
[INFO] [stderr]    Compiling skiplist-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `drop_key_value` is never used
[INFO] [stdout]    --> src/list.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | pub trait ReclaimableNode {
[INFO] [stdout]     |           --------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn drop_key_value(&mut self);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `slice_pattern` is declared but not used
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 29s
[INFO] running `Command { std: "docker" "inspect" "7b4a701571d1c9be762dba1320a3b7b7373b97131bb4586f825217f9400db380", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4a701571d1c9be762dba1320a3b7b7373b97131bb4586f825217f9400db380", kill_on_drop: false }`
[INFO] [stdout] 7b4a701571d1c9be762dba1320a3b7b7373b97131bb4586f825217f9400db380
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c17914cb9aef79effcac6b66c13182b7a753f39250b085ee33650ca8c172ca90
[INFO] running `Command { std: "docker" "start" "-a" "c17914cb9aef79effcac6b66c13182b7a753f39250b085ee33650ca8c172ca90", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex-automata v0.4.4
[INFO] [stderr]    Compiling tikv-jemalloc-sys v0.5.4+5.3.0-patched
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling fail v0.5.1
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling loom v0.7.1
[INFO] [stderr]    Compiling tikv-jemalloc-ctl v0.5.4
[INFO] [stderr]    Compiling tikv-jemallocator v0.5.4
[INFO] [stderr]    Compiling skiplist-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `drop_key_value` is never used
[INFO] [stdout]    --> src/list.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | pub trait ReclaimableNode {
[INFO] [stdout]     |           --------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn drop_key_value(&mut self);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `drop_key_value` is never used
[INFO] [stdout]    --> src/list.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | pub trait ReclaimableNode {
[INFO] [stdout]     |           --------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn drop_key_value(&mut self);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `slice_pattern` is declared but not used
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `slice_pattern` is declared but not used
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2m 53s
[INFO] running `Command { std: "docker" "inspect" "c17914cb9aef79effcac6b66c13182b7a753f39250b085ee33650ca8c172ca90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c17914cb9aef79effcac6b66c13182b7a753f39250b085ee33650ca8c172ca90", kill_on_drop: false }`
[INFO] [stdout] c17914cb9aef79effcac6b66c13182b7a753f39250b085ee33650ca8c172ca90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 763f3206c210c1caa5adfac81fd4599fb6bc056debe8169d4cbade4131480583
[INFO] running `Command { std: "docker" "start" "-a" "763f3206c210c1caa5adfac81fd4599fb6bc056debe8169d4cbade4131480583", kill_on_drop: false }`
[INFO] [stderr] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(let_chains)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `drop_key_value` is never used
[INFO] [stderr]    --> src/list.rs:124:8
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub trait ReclaimableNode {
[INFO] [stderr]     |           --------------- method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 124 |     fn drop_key_value(&mut self);
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: feature `slice_pattern` is declared but not used
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(slice_pattern)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `skiplist-rs` (lib) generated 3 warnings
[INFO] [stderr] warning: `skiplist-rs` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/skiplist_rs-35a078130a21b9c3)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test key::tests::test_key_comparator ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'list::tests::concurrent_put_and_remove' (18) panicked at src/list.rs:496:39:
[INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr] 
[INFO] [stderr] This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55ed43f739ca - std[f92b4c606f291077]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x55ed43f739ca - std[f92b4c606f291077]::backtrace_rs::backtrace::trace_unsynchronized::<std[f92b4c606f291077]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x55ed43f739ca - std[f92b4c606f291077]::sys::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x55ed43f739ca - <<std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[786f478f706679df]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x55ed43f876aa - <core[786f478f706679df]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x55ed43f876aa - core[786f478f706679df]::fmt::write
[INFO] [stderr]    6:     0x55ed43f78da2 - std[f92b4c606f291077]::io::default_write_fmt::<std[f92b4c606f291077]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x55ed43f78da2 - <std[f92b4c606f291077]::sys::stdio::unix::Stderr as std[f92b4c606f291077]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x55ed43f52d9f - <std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x55ed43f52d9f - std[f92b4c606f291077]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x55ed43f6bf51 - std[f92b4c606f291077]::panicking::default_hook
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x55ed43bee71c - <alloc[64763625b5a07cdb]::boxed::Box<dyn for<'a, 'b> core[786f478f706679df]::ops::function::Fn<(&'a std[f92b4c606f291077]::panic::PanicHookInfo<'b>,), Output = ()> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::marker::Send> as core[786f478f706679df]::ops::function::Fn<(&std[f92b4c606f291077]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/alloc/src/boxed.rs:2254:9
[INFO] [stderr]   12:     0x55ed43bee71c - test[20e1f0ae6cad7a17]::test_main_with_exit_callback::<test[20e1f0ae6cad7a17]::test_main::{closure#0}>::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x55ed43f6c142 - <alloc[64763625b5a07cdb]::boxed::Box<dyn for<'a, 'b> core[786f478f706679df]::ops::function::Fn<(&'a std[f92b4c606f291077]::panic::PanicHookInfo<'b>,), Output = ()> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::marker::Send> as core[786f478f706679df]::ops::function::Fn<(&std[f92b4c606f291077]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/alloc/src/boxed.rs:2254:9
[INFO] [stderr]   14:     0x55ed43f6c142 - std[f92b4c606f291077]::panicking::panic_with_hook
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:833:13
[INFO] [stderr]   15:     0x55ed43f52e8a - std[f92b4c606f291077]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:691:13
[INFO] [stderr]   16:     0x55ed43f4a7f9 - std[f92b4c606f291077]::sys::backtrace::__rust_end_short_backtrace::<std[f92b4c606f291077]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   17:     0x55ed43f53a4d - __rustc[8241495c18a89d70]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:689:5
[INFO] [stderr]   18:     0x55ed43f87c5d - core[786f478f706679df]::panicking::panic_nounwind_fmt::runtime
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x55ed43f87c5d - core[786f478f706679df]::panicking::panic_nounwind_fmt
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/intrinsics/mod.rs:2447:9
[INFO] [stderr]   20:     0x55ed43bdc894 - <usize as core[786f478f706679df]::slice::index::SliceIndex<[_]>>::get_unchecked::precondition_check
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ub_checks.rs:73:21
[INFO] [stderr]   21:     0x55ed43bdcab9 - <usize as core[786f478f706679df]::slice::index::SliceIndex<[crossbeam_epoch[ce9bde37396febf2]::atomic::Atomic<skiplist_rs[f18ebfaf4c4fde45]::list::Node>]>>::get_unchecked
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ub_checks.rs:78:17
[INFO] [stderr]   22:     0x55ed43bd28b8 - <[crossbeam_epoch[ce9bde37396febf2]::atomic::Atomic<skiplist_rs[f18ebfaf4c4fde45]::list::Node>]>::get_unchecked::<usize>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/slice/mod.rs:646:26
[INFO] [stderr]   23:     0x55ed43bcb47d - <skiplist_rs[f18ebfaf4c4fde45]::list::Tower as core[786f478f706679df]::ops::index::Index<usize>>::index
[INFO] [stderr]                                at /opt/rustwide/workdir/src/list.rs:49:32
[INFO] [stderr]   24:     0x55ed43bc4653 - <skiplist_rs[f18ebfaf4c4fde45]::list::Skiplist<skiplist_rs[f18ebfaf4c4fde45]::key::ByteWiseComparator, skiplist_rs[f18ebfaf4c4fde45]::memory_control::RecorderLimiter>>::search_position
[INFO] [stderr]                                at /opt/rustwide/workdir/src/list.rs:496:39
[INFO] [stderr]   25:     0x55ed43bc1e87 - <skiplist_rs[f18ebfaf4c4fde45]::list::Skiplist<skiplist_rs[f18ebfaf4c4fde45]::key::ByteWiseComparator, skiplist_rs[f18ebfaf4c4fde45]::memory_control::RecorderLimiter>>::put::<alloc[64763625b5a07cdb]::vec::Vec<u8>, alloc[64763625b5a07cdb]::vec::Vec<u8>>
[INFO] [stderr]                                at /opt/rustwide/workdir/src/list.rs:621:27
[INFO] [stderr]   26:     0x55ed43bc940a - skiplist_rs[f18ebfaf4c4fde45]::list::tests::concurrent_put_and_remove
[INFO] [stderr]                                at /opt/rustwide/workdir/src/list.rs:1302:20
[INFO] [stderr]   27:     0x55ed43bc2ad7 - skiplist_rs[f18ebfaf4c4fde45]::list::tests::concurrent_put_and_remove::{closure#0}
[INFO] [stderr]                                at /opt/rustwide/workdir/src/list.rs:1292:35
[INFO] [stderr]   28:     0x55ed43bdd966 - <skiplist_rs[f18ebfaf4c4fde45]::list::tests::concurrent_put_and_remove::{closure#0} as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   29:     0x55ed43be27fb - <fn() -> core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   30:     0x55ed43be27fb - test[20e1f0ae6cad7a17]::__rust_begin_short_backtrace::<core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String>, fn() -> core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String>>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:663:18
[INFO] [stderr]   31:     0x55ed43bef1eb - test[20e1f0ae6cad7a17]::run_test_in_process::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:686:74
[INFO] [stderr]   32:     0x55ed43bef1eb - <core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<test[20e1f0ae6cad7a17]::run_test_in_process::{closure#0}> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr]   33:     0x55ed43bef1eb - std[f92b4c606f291077]::panicking::catch_unwind::do_call::<core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<test[20e1f0ae6cad7a17]::run_test_in_process::{closure#0}>, core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String>>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:581:40
[INFO] [stderr]   34:     0x55ed43bef1eb - std[f92b4c606f291077]::panicking::catch_unwind::<core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String>, core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<test[20e1f0ae6cad7a17]::run_test_in_process::{closure#0}>>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:544:19
[INFO] [stderr]   35:     0x55ed43bef1eb - std[f92b4c606f291077]::panic::catch_unwind::<core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<test[20e1f0ae6cad7a17]::run_test_in_process::{closure#0}>, core[786f478f706679df]::result::Result<(), alloc[64763625b5a07cdb]::string::String>>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panic.rs:359:14
[INFO] [stderr]   36:     0x55ed43bef1eb - test[20e1f0ae6cad7a17]::run_test_in_process
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:686:27
[INFO] [stderr]   37:     0x55ed43bef1eb - test[20e1f0ae6cad7a17]::run_test::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:607:43
[INFO] [stderr]   38:     0x55ed43bea904 - test[20e1f0ae6cad7a17]::run_test::{closure#1}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/test/src/lib.rs:637:41
[INFO] [stderr]   39:     0x55ed43bea904 - std[f92b4c606f291077]::sys::backtrace::__rust_begin_short_backtrace::<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   40:     0x55ed43bf1df2 - std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked::<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stderr]   41:     0x55ed43bf1df2 - <core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr]   42:     0x55ed43bf1df2 - std[f92b4c606f291077]::panicking::catch_unwind::do_call::<core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:581:40
[INFO] [stderr]   43:     0x55ed43bf1df2 - std[f92b4c606f291077]::panicking::catch_unwind::<(), core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:544:19
[INFO] [stderr]   44:     0x55ed43bf1df2 - std[f92b4c606f291077]::panic::catch_unwind::<core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panic.rs:359:14
[INFO] [stderr]   45:     0x55ed43bf1df2 - std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked::<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stderr]   46:     0x55ed43bf1df2 - <std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<test[20e1f0ae6cad7a17]::run_test::{closure#1}, ()>::{closure#1} as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   47:     0x55ed43f732df - <alloc[64763625b5a07cdb]::boxed::Box<dyn core[786f478f706679df]::ops::function::FnOnce<(), Output = ()> + core[786f478f706679df]::marker::Send> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/alloc/src/boxed.rs:2240:9
[INFO] [stderr]   48:     0x55ed43f732df - <std[f92b4c606f291077]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stderr]   49:     0x757b74834aa4 - <unknown>
[INFO] [stderr]   50:     0x757b748c1a64 - clone
[INFO] [stderr]   51:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[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/skiplist_rs-35a078130a21b9c3` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "763f3206c210c1caa5adfac81fd4599fb6bc056debe8169d4cbade4131480583", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "763f3206c210c1caa5adfac81fd4599fb6bc056debe8169d4cbade4131480583", kill_on_drop: false }`
[INFO] [stdout] 763f3206c210c1caa5adfac81fd4599fb6bc056debe8169d4cbade4131480583
