[INFO] cloning repository https://github.com/brianshih1/mini-lsm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brianshih1/mini-lsm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianshih1%2Fmini-lsm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianshih1%2Fmini-lsm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74b040a210f2e90a0598ccca980b5345855c01ce
[INFO] testing brianshih1/mini-lsm against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrianshih1%2Fmini-lsm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brianshih1/mini-lsm on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/brianshih1/mini-lsm
[INFO] finished tweaking git repo https://github.com/brianshih1/mini-lsm
[INFO] tweaked toml for git repo https://github.com/brianshih1/mini-lsm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/brianshih1/mini-lsm 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" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8584c271af09150a1a8ee56ec4cb58813de52ce0ca0dd5bc8b8bc16b05f9ba89
[INFO] running `Command { std: "docker" "start" "-a" "8584c271af09150a1a8ee56ec4cb58813de52ce0ca0dd5bc8b8bc16b05f9ba89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8584c271af09150a1a8ee56ec4cb58813de52ce0ca0dd5bc8b8bc16b05f9ba89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8584c271af09150a1a8ee56ec4cb58813de52ce0ca0dd5bc8b8bc16b05f9ba89", kill_on_drop: false }`
[INFO] [stdout] 8584c271af09150a1a8ee56ec4cb58813de52ce0ca0dd5bc8b8bc16b05f9ba89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd766f9927a9599ffe3b0c99a3f204438d1e1385a9b3e3427c133125517e5f50
[INFO] running `Command { std: "docker" "start" "-a" "dd766f9927a9599ffe3b0c99a3f204438d1e1385a9b3e3427c133125517e5f50", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling rustix v0.36.5
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling raw-cpuid v10.6.0
[INFO] [stderr]    Compiling crossbeam-skiplist v0.1.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling moka v0.9.6
[INFO] [stderr]    Compiling triomphe v0.1.8
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling aliasable v0.1.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling tagptr v0.2.0
[INFO] [stderr]    Compiling arc-swap v1.5.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling bytes v1.3.0
[INFO] [stderr]    Compiling clap_lex v0.3.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling quanta v0.10.1
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling os_pipe v1.1.2
[INFO] [stderr]    Compiling shared_child v1.0.0
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling console v0.15.2
[INFO] [stderr]    Compiling uuid v1.2.2
[INFO] [stderr]    Compiling duct v0.13.6
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.6
[INFO] [stderr]    Compiling is-terminal v0.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling ouroboros_macro v0.15.5
[INFO] [stderr]    Compiling clap_derive v4.0.21
[INFO] [stderr]    Compiling ouroboros v0.15.5
[INFO] [stderr]    Compiling mini-lsm v0.1.0 (/opt/rustwide/workdir/mini-lsm)
[INFO] [stderr]    Compiling mini-lsm-starter v0.1.0 (/opt/rustwide/workdir/mini-lsm-starter)
[INFO] [stdout] warning: unused import: `DerefMut`
[INFO] [stdout]  --> mini-lsm-starter/src/lsm_storage.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::{Bound, DerefMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> mini-lsm-starter/src/mem_table.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{Error, Ok, Result};
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> mini-lsm-starter/src/table/builder.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use bytes::{Bytes, BytesMut};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     block::{self, BlockBuilder},
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Block`
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     block::{Block, BlockIterator},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> mini-lsm-starter/src/table.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufMut`
[INFO] [stdout]   --> mini-lsm-starter/src/table.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use bytes::{Buf, BufMut, Bytes};
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v4.0.32
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let _ = self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 let _ = std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/two_merge_iterator.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/mem_table.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         it.next();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = it.next();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mini-lsm-xtask v0.1.0 (/opt/rustwide/workdir/xtask)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.86s
[INFO] running `Command { std: "docker" "inspect" "dd766f9927a9599ffe3b0c99a3f204438d1e1385a9b3e3427c133125517e5f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd766f9927a9599ffe3b0c99a3f204438d1e1385a9b3e3427c133125517e5f50", kill_on_drop: false }`
[INFO] [stdout] dd766f9927a9599ffe3b0c99a3f204438d1e1385a9b3e3427c133125517e5f50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 894455f63aa70334cc8c5cb1c1912bb962cb34d9bf67daeba962af7720c43ad9
[INFO] running `Command { std: "docker" "start" "-a" "894455f63aa70334cc8c5cb1c1912bb962cb34d9bf67daeba962af7720c43ad9", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stdout] warning: unused import: `DerefMut`
[INFO] [stdout]  --> mini-lsm-starter/src/lsm_storage.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::{Bound, DerefMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> mini-lsm-starter/src/mem_table.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{Error, Ok, Result};
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> mini-lsm-starter/src/table/builder.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use bytes::{Bytes, BytesMut};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     block::{self, BlockBuilder},
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Block`
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     block::{Block, BlockIterator},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> mini-lsm-starter/src/table.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufMut`
[INFO] [stdout]   --> mini-lsm-starter/src/table.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use bytes::{Buf, BufMut, Bytes};
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let _ = self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 let _ = std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mini-lsm-xtask v0.1.0 (/opt/rustwide/workdir/xtask)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/two_merge_iterator.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/mem_table.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         it.next();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = it.next();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling mini-lsm v0.1.0 (/opt/rustwide/workdir/mini-lsm)
[INFO] [stderr]    Compiling mini-lsm-starter v0.1.0 (/opt/rustwide/workdir/mini-lsm-starter)
[INFO] [stdout] warning: unused import: `DerefMut`
[INFO] [stdout]  --> mini-lsm-starter/src/lsm_storage.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::{Bound, DerefMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> mini-lsm-starter/src/mem_table.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{Error, Ok, Result};
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> mini-lsm-starter/src/table/builder.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use bytes::{Bytes, BytesMut};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     block::{self, BlockBuilder},
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Block`
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     block::{Block, BlockIterator},
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> mini-lsm-starter/src/table.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufMut`
[INFO] [stdout]   --> mini-lsm-starter/src/table.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use bytes::{Buf, BufMut, Bytes};
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/tests/merge_iterator_test.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut iter = MergeIterator::create(vec![
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut iter = TwoMergeIterator::create(i1, i2).unwrap();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut iter = TwoMergeIterator::create(i1, i2).unwrap();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `as_bytes` is never used
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn as_bytes(x: &[u8]) -> Bytes {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let _ = self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 let _ = std::mem::replace(&mut self.current, Some(popped));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/iterators/two_merge_iterator.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             self.next();
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let _ = self.next();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> mini-lsm-starter/src/mem_table.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         it.next();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = it.next();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "894455f63aa70334cc8c5cb1c1912bb962cb34d9bf67daeba962af7720c43ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "894455f63aa70334cc8c5cb1c1912bb962cb34d9bf67daeba962af7720c43ad9", kill_on_drop: false }`
[INFO] [stdout] 894455f63aa70334cc8c5cb1c1912bb962cb34d9bf67daeba962af7720c43ad9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9e7e52ec13fe40cb6f8e170818ecc9815896e0ab84acb01f5d2afb202df7fe89
[INFO] running `Command { std: "docker" "start" "-a" "9e7e52ec13fe40cb6f8e170818ecc9815896e0ab84acb01f5d2afb202df7fe89", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: unused import: `DerefMut`
[INFO] [stderr]  --> mini-lsm-starter/src/lsm_storage.rs:5:23
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::{Bound, DerefMut};
[INFO] [stderr]   |                       ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> mini-lsm-starter/src/mem_table.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 | use anyhow::{Error, Ok, Result};
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BytesMut`
[INFO] [stderr]  --> mini-lsm-starter/src/table/builder.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | use bytes::{Bytes, BytesMut};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]   --> mini-lsm-starter/src/table/builder.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |     block::{self, BlockBuilder},
[INFO] [stderr]    |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Block`
[INFO] [stderr]   --> mini-lsm-starter/src/table/iterator.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     block::{Block, BlockIterator},
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Cursor`
[INFO] [stderr]  --> mini-lsm-starter/src/table.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::Cursor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufMut`
[INFO] [stderr]   --> mini-lsm-starter/src/table.rs:13:18
[INFO] [stderr]    |
[INFO] [stderr] 13 | use bytes::{Buf, BufMut, Bytes};
[INFO] [stderr]    |                  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 88 |             let _ = self.current.as_mut().unwrap_unchecked().1.next();
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:110:17
[INFO] [stderr]     |
[INFO] [stderr] 110 |                 std::mem::replace(&mut self.current, Some(popped));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 110 |                 let _ = std::mem::replace(&mut self.current, Some(popped));
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> mini-lsm-starter/src/iterators/merge_iterator.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             self.next();
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 116 |             let _ = self.next();
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> mini-lsm-starter/src/iterators/two_merge_iterator.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             self.next();
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 110 |             let _ = self.next();
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> mini-lsm-starter/src/mem_table.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         it.next();
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let _ = it.next();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/tests/merge_iterator_test.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut iter = MergeIterator::create(vec![
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let mut iter = TwoMergeIterator::create(i1, i2).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut iter = TwoMergeIterator::create(i1, i2).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `as_bytes` is never used
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/tests/two_merge_iterator_test.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn as_bytes(x: &[u8]) -> Bytes {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mini-lsm-starter` (lib) generated 12 warnings (run `cargo fix --lib -p mini-lsm-starter` to apply 7 suggestions)
[INFO] [stderr] warning: `mini-lsm-starter` (lib test) generated 16 warnings (12 duplicates) (run `cargo fix --lib -p mini-lsm-starter --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm-f39d38b53ff0b4c1)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test block::tests::test_block_build_single_key ... ok
[INFO] [stderr] thread 'mem_table::tests::test_memtable_flush' panicked at core/src/panicking.rs:223:5:
[INFO] [stdout] test block::tests::test_block_build_full ... ok
[INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stdout] test block::tests::test_block_encode ... ok
[INFO] [stderr] stack backtrace:
[INFO] [stdout] test block::tests::test_block_decode ... ok
[INFO] [stdout] test block::tests::test_block_iterator ... ok
[INFO] [stderr]    0:     0x63b53748e31a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]    1:     0x63b53748e31a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x63b53748e31a - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]    3:     0x63b53748e31a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]    4:     0x63b5374b4b73 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]    5:     0x63b5374b4b73 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stderr]    6:     0x63b53748b3c3 - std::io::Write::write_fmt::hc00bff0a88e08857
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stderr]    7:     0x63b53748e162 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]    8:     0x63b53748f79d - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stderr]    9:     0x63b53748f5e3 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:295:9
[INFO] [stderr]   10:     0x63b53741b2d7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7a3c7b4a1ae77f2f
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stderr]   11:     0x63b53741b2d7 - test::test_main::{{closure}}::hf0d3b69ae9b353d1
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21
[INFO] [stderr]   12:     0x63b53748fe48 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6332e82e7b189abd
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stderr]   13:     0x63b53748fe48 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13
[INFO] [stderr]   14:     0x63b53748fbd6 - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:667:13
[INFO] [stderr]   15:     0x63b53748e7f9 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]   16:     0x63b53748f89c - rust_begin_unwind
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stderr]   17:     0x63b5372f6bfd - core::panicking::panic_nounwind_fmt::runtime::h16b1bdf492db9bcf
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:119:22
[INFO] [stderr]   18:     0x63b5372f6bfd - core::panicking::panic_nounwind_fmt::h7c9e0c5a3391ac64
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/intrinsics/mod.rs:3535:9
[INFO] [stderr]   19:     0x63b5372f6c92 - core::panicking::panic_nounwind::h6fa94367123ff7d0
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:223:5
[INFO] [stderr]   20:     0x63b53738ffd8 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::hdd342f3af6ec32cd
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ub_checks.rs:69:21
[INFO] [stderr]   21:     0x63b53738fe4f - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h1fb6b9298feb5920
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ub_checks.rs:76:17
[INFO] [stderr]   22:     0x63b53738da38 - core::slice::<impl [T]>::get_unchecked::hf39080facc6785aa
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/slice/mod.rs:664:20
[INFO] [stderr]   23:     0x63b537369a5d - <crossbeam_skiplist::base::Tower<K,V> as core::ops::index::Index<usize>>::index::h0fc85fc58e45b94d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:39:18
[INFO] [stderr]   24:     0x63b53736cd8a - crossbeam_skiplist::base::SkipList<K,V>::search_position::h50c4187c579a04ed
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:781:33
[INFO] [stderr]   25:     0x63b53736be49 - crossbeam_skiplist::base::SkipList<K,V>::insert_internal::h1d0cdb38b8c638b1
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:871:26
[INFO] [stderr]   26:     0x63b53736d57e - crossbeam_skiplist::base::SkipList<K,V>::insert::h700bd52cc8cc569c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/base.rs:1085:9
[INFO] [stderr]   27:     0x63b53731d6c3 - crossbeam_skiplist::map::SkipMap<K,V>::insert::h8d6f0634625038f3
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-skiplist-0.1.0/src/map.rs:375:20
[INFO] [stderr]   28:     0x63b537350130 - mini_lsm::mem_table::MemTable::put::h65ce6508dcc8f86f
[INFO] [stderr]                                at /opt/rustwide/workdir/mini-lsm/src/mem_table.rs:41:9
[INFO] [stderr]   29:     0x63b53739211a - mini_lsm::mem_table::tests::test_memtable_flush::he968d7ff915b2847
[INFO] [stderr]                                at /opt/rustwide/workdir/mini-lsm/src/mem_table/tests.rs:35:5
[INFO] [stderr]   30:     0x63b5373920b7 - mini_lsm::mem_table::tests::test_memtable_flush::{{closure}}::h4851637e0fe1cee3
[INFO] [stderr]                                at /opt/rustwide/workdir/mini-lsm/src/mem_table/tests.rs:33:25
[INFO] [stderr]   31:     0x63b53735c8a6 - core::ops::function::FnOnce::call_once::h223b671c69bdd17c
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   32:     0x63b53741fdfb - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   33:     0x63b53741fdfb - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18
[INFO] [stderr]   34:     0x63b53741f7e8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60
[INFO] [stderr]   35:     0x63b53741f7e8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stderr]   36:     0x63b53741f7e8 - std::panicking::try::do_call::hc79d0fc888a0bd30
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stderr]   37:     0x63b53741f7e8 - std::panicking::try::hb8a7878e3a8589d6
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stderr]   38:     0x63b53741f7e8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stderr]   39:     0x63b53741f7e8 - test::run_test_in_process::hc2900b0b18688dd6
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27
[INFO] [stderr]   40:     0x63b53741f7e8 - test::run_test::{{closure}}::hac2a9cb07be3d48d
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43
[INFO] [stderr]   41:     0x63b5373e328a - test::run_test::{{closure}}::h4a5b729e66a38cd8
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41
[INFO] [stderr]   42:     0x63b5373e328a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18
[INFO] [stderr]   43:     0x63b5373e6c04 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17
[INFO] [stderr]   44:     0x63b5373e6c04 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stderr]   45:     0x63b5373e6c04 - std::panicking::try::do_call::h2625a51b667bfb64
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stderr]   46:     0x63b5373e6c04 - std::panicking::try::hb956a59a1973aa4c
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stderr]   47:     0x63b5373e6c04 - std::panic::catch_unwind::h64f3b9d1067ef6a0
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stderr]   48:     0x63b5373e6c04 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30
[INFO] [stderr]   49:     0x63b5373e6c04 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   50:     0x63b53749492b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42f0ba71002a1b2c
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stderr]   51:     0x63b53749492b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::had9e47d7a3dcecb8
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stderr]   52:     0x63b53749492b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2
[INFO] [stderr]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stderr]   53:     0x793020407ac3 - <unknown>
[INFO] [stderr]   54:     0x793020498a04 - clone
[INFO] [stderr]   55:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `-p mini-lsm --lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/mini_lsm-f39d38b53ff0b4c1` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "9e7e52ec13fe40cb6f8e170818ecc9815896e0ab84acb01f5d2afb202df7fe89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e7e52ec13fe40cb6f8e170818ecc9815896e0ab84acb01f5d2afb202df7fe89", kill_on_drop: false }`
[INFO] [stdout] 9e7e52ec13fe40cb6f8e170818ecc9815896e0ab84acb01f5d2afb202df7fe89
